BCA (SCIENCE) JAVA PRACTICAL SLIPS PAGES.(JAVA) ~ Javat2point

UNIVERSITY OF PUNE

BCA (SCIENCE) JAVA PRACTICAL SLIPS PAGES.

// slip 1. Q1 //Find max element of an array//

import java.io.*;

class slip1_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int max,i,n;

int a[]=new int[10];

System.out.print("enter a how many element you want= ");

n=Integer.parseInt(br.readLine());

for(i=0;i<n;i++)

{

System.out.print("enter a element = ");

a[i]=Integer.parseInt(br.readLine());

}

max=a[0];

for(i=0;i<n;i++)

{

if(max<a[i])

{

max=a[i];

}

System.out.println("\nTHE MAX ELEMENT IS= "+max);

}

/*================OUTPUT===============

smj@smj-virtual-machine:~$ javac Max.java

smj@smj-virtual-machine:~$ java Max

enter a how many element you want= 4

enter a element = 12

enter a element = 3

enter a element = 24

enter a element = 54

THE MAX ELEMENT IS= 54

smj@smj-virtual-machine:~$

//slip 1_2

import java.io.*;

abstract class shape

{

abstract void calc_area();

abstract void calc_volume();

}

class sphere extends shape

{

int radius;

double a;

public sphere(int radius)

{

this.radius=radius;

}

public void calc_area()

{

a=4*3.14*radius*radius;

System.out.println("\nThe Area of sphere is = "+a);

}

public void calc_volume()

{

double v;

v=4*3.14*radius*radius*radius;

System.out.println("\nThe volume of sphere is = "+v);

}

class box extends shape

{

public int hight;

public int breadth;

public int length;

public box(int hight,int breadth,int length)

{

this.hight=hight;

this.breadth=breadth;

this.length=length;

}

public void calc_area()

{

double a;

a=2*(hight*breadth)+2*(hight*length)+2*(breadth*length);

System.out.println("\nThe Area of box is = "+a);

}

public void calc_volume()

{

double v;

v=hight*breadth*length;

System.out.println("\nThe Volume of box = "+v);

}

class slip1_2

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int r,l,b,h;

System.out.print("enter a radius of sphere = ");

r=Integer.parseInt(br.readLine());

sphere ob1=new sphere(r);

ob1.calc_area();

ob1.calc_volume();

System.out.print("enter a length of box = ");

l=Integer.parseInt(br.readLine());

System.out.print("enter a breadth of box = ");

b=Integer.parseInt(br.readLine());

System.out.print("enter a hight box = ");

h=Integer.parseInt(br.readLine());

box ob2=new box(l,b,h);

ob2.calc_area();

ob2.calc_volume();

System.out.println();

}

/*=================OUTPUT============

smj@smj-virtual-machine:~$ javac slip1_2.java

smj@smj-virtual-machine:~$ java slip1_2

enter a radius of sphere = 3

The Area of sphere is = 113.03999999999999

The volume of sphere is = 339.12

enter a length of box = 2

enter a breadth of box = 2

enter a hight box = 2

The Area of box is = 24.0

The Volume of box = 8.0

smj@smj-virtual-machine:~$

// ======= slip1_3 =========//

import javax.swing.*;

import java.awt.*;

class panel

{

public static void main(String arg[])

{

JFrame f=new JFrame("panel");

JLabel l1=new JLabel("Font");

l1.setBounds(10,40,100,30);

String color[]={"Aril","Black","Red","Green","Gray"};

JComboBox cb1=new JComboBox(color);

cb1.setBounds(10,70,70,30);

JLabel l2=new JLabel("Size");

l2.setBounds(10,120,100,30);

String Size[]={"10","20","30","40","50"};

JComboBox cb2=new JComboBox(Size);

cb2.setBounds(10,150,70,30);

JTextField t=new JTextField();

t.setBounds(10,200,250,30);

JLabel l3=new JLabel("Style");

l3.setBounds(150,40,100,30);

JCheckBox b1=new JCheckBox("Bold");

b1.setBounds(150,70,100,30);

JCheckBox b2=new JCheckBox("Italic");

b2.setBounds(150,100,100,30);

JCheckBox b3=new JCheckBox("Underline");

b3.setBounds(150,130,100,30);

f.add(l1);

f.add(cb1);

f.add(l2);

f.add(cb2);

f.add(t);

f.add(l3);

f.add(b1);

f.add(b2);

f.add(b3);

f.setSize(300,300);

f.setLayout(null);

f.setVisible(true);

}

…

//slip 4_1//

import java.io.*;

class slip4_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int a,b;

System.out.print("enter a two no = ");

a=Integer.parseInt(br.readLine());

b=Integer.parseInt(br.readLine());

int c=a+b;

System.out.println("\nthe sum is "+c);

}

/*================output===========

smj@smj-virtual-machine:~$ javac slip4_1.java

smj@smj-virtual-machine:~$ java slip4_1

enter a two no = 5

the sum is 11

smj@smj-virtual-machine:~$

…

//slip 4_2//

import java.io.*;

class person

{

int pid,age;

String pname,gender;

public person(int pid,String pname,int age,String gender)

{

this.pid=pid;

this.pname=pname;

this.age=age;

this.gender=gender;

}

public String toString()

{

return pid+" "+pname+" "+age +" "+gender;

}

class slip4_2

{

public static void main(String arg[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int pi,ag,n,i;

String pn,gen;

System.out.print("enter a how many person = ");

n=Integer.parseInt(br.readLine());

person obj[]=new person[n];

for(i=0;i<n;i++)

{

System.out.print("enter a pid = ");

pi=Integer.parseInt(br.readLine());

System.out.print("enter a pname = ");

pn=br.readLine();

System.out.print("enter a age = ");

ag=Integer.parseInt(br.readLine());

System.out.print("enter a gender = ");

gen=br.readLine();

System.out.println();

obj[i]=new person(pi,pn,ag,gen);

}

System.out.println("\nDisplay person details\n");

for(i=0;i<n;i++)

{

System.out.println(obj[i]);

}

/*==========output================

smj@smj-virtual-machine:~$ javac slip4_2.java

smj@smj-virtual-machine:~$ java slip4_2

enter a how many person = 2

enter a pid = 111

enter a pname = jagdish

enter a age = 19

enter a gender = male

enter a pid = 222

enter a pname = ankit

enter a age = 20

enter a gender = male

Display person details

111 jagdish 19 male

222 ankit 20 male

smj@smj-virtual-machine:~$ */

//========== slip 4_3 ========//

import java.io.*;

class slip4_3

{

public static void main(String arg[])throws IOException

{

File in1=new File("f1.txt");

File in2=new File("f2.txt");

File in3=new File("f3.txt");

FileReader fr1=new FileReader(in1);

FileWriter fw1=new FileWriter(in2);

int ch;

while((ch=fr1.read())!=-1)

{

char c=(char)ch;

if(Character.isUpperCase(c))

{

c=Character.toLowerCase(c);

fw1.write(c);

}

else if(Character.isLowerCase(c))

{

c=Character.toUpperCase(c);

fw1.write(c);

}

else

{

fw1.write(c);

}

fw1.close();

FileReader r1=new FileReader(in1);

FileWriter w1=new FileWriter(in3);

while((ch=r1.read())!=-1)

{

char c=(char)ch;

w1.write(c);

}

r1.close();

FileReader r2=new FileReader(in2);

while((ch=r2.read())!=-1)

{

char c=(char)ch;

w1.write(c);

}

r2.close();

w1.close();

}

/*================= Output===============

/*****************f1.txt*******************

asdsdf sdjfsdf saduf sdfsdf;

df sdfsdf

sdhfsd

f sadfsdfhs fisf sdf sdfsdsljfsad

fpsdfoshdf

DFG

DFGH

DHHJ

DFGN SHOH FG SDFH OSHDFC HSDHFSDHFH SDFSHDF

/*****************f2.txt********************

ASDSDF SDJFSDF SADUF SDFSDF;

DF SDFSDF

SDHFSD

F SADFSDFHS FISF SDF SDFSDSLJFSAD

FPSDFOSHDF

dfg

dfgh

dhhj

dfgn shoh fg sdfh oshdfc hsdhfsdhfh sdfshdf

/*****************f3.txt********************

asdsdf sdjfsdf saduf sdfsdf;

df sdfsdf

sdhfsd

f sadfsdfhs fisf sdf sdfsdsljfsad

fpsdfoshdf

DFG

DFGH

DHHJ

DFGN SHOH FG SDFH OSHDFC HSDHFSDHFH SDFSHDF

ASDSDF SDJFSDF SADUF SDFSDF;

DF SDFSDF

SDHFSD

F SADFSDFHS FISF SDF SDFSDSLJFSAD FPSDFOSHDF

dfg

dfgh

dhhj

dfgn shoh fg sdfh oshdfc hsdhfsdhfh sdfshdf

….

//slip 5_1//

import java.io.*;

class slip5_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

String str1,rev="";

System.out.println();

System.out.print("enter a orignal String = ");

str1=br.readLine();

int len=str1.length();

int i;

for(i=len-1;i>=0;i--)

{

rev=rev+str1.charAt(i);

}

if(str1.equals(rev))

{

System.out.println("String is palindrom\n");

}

else

{

System.out.println("String is not palindrom\n");

}

/*=====================output==============

smj@smj-virtual-machine:~$ javac slip5_1.java

smj@smj-virtual-machine:~$ java slip5_1

enter a orignal String = nitin

String is palindrom

smj@smj-virtual-machine:~$ javac slip5_1.java

smj@smj-virtual-machine:~$ java slip5_1

enter a orignal String = neha

String is not palindrom

smj@smj-virtual-machine:~$

//===slip 5_2====//

import java.io.*;

class IncorrectPassword extends Exception

{

}

class slip5_2

{

public static void main(String ar[])throws IOException

{

String u_name="google";

String password="google@123";

String un,pass;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.print("\nenter a user name = ");

un=br.readLine();

System.out.print("enter a password = ");

pass=br.readLine();

try

{

if(u_name.equals(un) || password.equals(pass))

{

System.out.println("\nUser Name and Password are valid\n");

}

else

{

throw new IncorrectPassword();

}

catch(IncorrectPassword e)

{

System.out.println("\nIncorrect Password Exception\n");

}

/*===============output====================

smj@smj-virtual-machine:~$ javac slip5_2.java

smj@smj-virtual-machine:~$ java slip5_2

enter a user name = google

enter a password = google@123

User Name and Password are valid

smj@smj-virtual-machine:~$ javac slip5_2.java

smj@smj-virtual-machine:~$ java slip5_2

enter a user name = smj

enter a password = smj@123

Incorrect Password Exception*/

//========= slip 6_1=====//

import java.io.*;

class slip6_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int sum=0;

double avg;

int a[]=new int[12];

int n,i;

System.out.print("Enter a how many no = ");

n=Integer.parseInt(br.readLine());

for(i=0;i<n;i++)

{

System.out.print("Enter a no = ");

a[i]=Integer.parseInt(br.readLine());

sum=sum+a[i];

}

avg=sum/n;

System.out.println();

System.out.println("The mean of array is = " +avg);

System.out.println();

}

/*===============output===============

smj@smj-virtual-machine:~$ javac slip6_1.java

smj@smj-virtual-machine:~$ java slip6_1

Enter a how many no = 4

Enter a no = 1

Enter a no = 2

Enter a no = 3

Enter a no = 4

The mean of array is = 2.0

smj@smj-virtual-machine:~$*/

//=======slip 5_3=======//

import java.io.*;

abstract class staff

{

String name,add;

}

class fulltimestaff extends staff

{

String dept;

double salary;

fulltimestaff(String name,String add,String dept,double salary)

{

this.name=name;

this.add=add;

this.dept=dept;

this.salary=salary;

}

void disp()

{

System.out.println();

System.out.println("Name is = " +name);

System.out.println("address is = "+add);

System.out.println("department is = "+dept);

System.out.println("salary is "+salary);

System.out.println();

}

class parttimestaff extends staff

{

int no_of_hr;

int r_p_hr;

parttimestaff(String name,String add,int no_of_hr,int r_p_hr)

{

this.name=name;

this.add=add;

this.no_of_hr=no_of_hr;

this.r_p_hr=r_p_hr;

}

void disp()

{

System.out.println("Name is = " +name);

System.out.println("address is = "+add);

System.out.println("no_of_hr is = "+no_of_hr);

System.out.println("r_p_hr is "+r_p_hr);

System.out.println();

}

class slip5_3

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

String nm,ad,dp;

double sal;

int nh,rh;

int n,ch;

{

System.out.println("1:full time staff");

System.out.println("2:part time staff");

System.out.print("Enter your choices = ");

ch=Integer.parseInt(br.readLine());

switch(ch)

{

case 1:

System.out.println();

System.out.print("Enter how many full time staff = ");

n=Integer.parseInt(br.readLine());

fulltimestaff obj1[]=new fulltimestaff[n];

int i;

for(i=0;i<n;i++)

{

System.out.print("Enter a Name = ");

nm=br.readLine();

System.out.print("Enter address = ");

ad=br.readLine();

System.out.print("Enter department = ");

dp=br.readLine();

System.out.print("Enter salary = ");

sal=Double.parseDouble(br.readLine());

System.out.println();

obj1[i]=new fulltimestaff(nm,ad,dp,sal);

}

System.out.println("======Details of full time staff===========");

for(i=0;i<n;i++)

{

obj1[i].disp();

}

break;

case 2:

int m,j;

System.out.print("Enter how many part time staff = ");

m=Integer.parseInt(br.readLine());

parttimestaff obj2[]=new parttimestaff[m];

for(j=0;j<m;j++)

{

System.out.println();

System.out.print("Enter a Name = ");

nm=br.readLine();

System.out.print("Enter address = ");

ad=br.readLine();

System.out.print("Enter no_of_hr = ");

nh=Integer.parseInt(br.readLine());

System.out.print("Enter a rate_per_hr = ");

rh=Integer.parseInt(br.readLine());

System.out.println();

obj2[j]=new parttimestaff(nm,ad,nh,rh);

}

System.out.println("==========Details of part time staff===========");

for(j=0;j<m;j++)

{

obj2[j].disp();

}

break;

default:System.out.println("Invalid choices = ");

}

}while(ch!=2);

}

/*===============output===================

smj@smj-virtual-machine:~$ javac slip5_3.java

smj@smj-virtual-machine:~$ java slip5_3

1:full time staff

2:part time staff

Enter your choices = 1

Enter how many full time staff = 2

Enter a Name = janvi

Enter address = kharadi

Enter department = manager

Enter salary = 6000000

Enter a Name = jagdish

Enter address = kharadi

Enter department = IT cyber security

Enter salary = 700000

======Details of full time staff===========

Name is = janvi

address is = kharadi

department is = manager

salary is 6000000.0

Name is = jagdish

address is = kharadi

department is = IT cyber security

salary is 700000.0

1:full time staff

2:part time staff

Enter your choices = 2

Enter how many part time staff = 2

Enter a Name = Neha varma

Enter address = EON pune

Enter no_of_hr = 9

Enter a rate_per_hr = 50

Enter a Name = Ankit pawar

Enter address = magarpatta city

Enter no_of_hr = 8

Enter a rate_per_hr = 40

==========Details of part time staff===========

Name is = Neha varma

address is = EON pune

no_of_hr is = 9

r_p_hr is 50

Name is = Ankit pawar

address is = magarpatta city

no_of_hr is = 8

r_p_hr is 40

//========= slip 6_2 ========//

import java.io.*;

import java.io.RandomAccessFile;

class slip6_2

{

public static void main(String arg[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

File f1=new File("a.c");

FileReader fr=new FileReader(f1);

RandomAccessFile raf=new RandomAccessFile("a.c","r");

long pos=raf.length();

int ch;

while((ch=fr.read())!=-1)

{

while(pos>0)

{

pos=pos-1;

raf.seek(pos);

byte b=raf.readByte();

System.out.print((char)b);

}

fr.close();

}

/*================output================

smj@smj-virtual-machine:~$ javac slip6_2.java

smj@smj-virtual-machine:~$ java slip6_2

}

;)a)tni(,"d% si edoc iicsa eht"(ftnirp

;)a&,"c%"(fnacs

;)"= rahc a retne"(ftnirp

;a rahc

{

)(niam diov

>h.oidts<edulcni#

//EDOC IICSA//smj@smj-virtual-machine:~$

//slip 7_3//

import java.io.*;

interface shape

{

public void area();

}

class rectangle implements shape

{

int w,l,s;

rectangle(int w,int l,int s)

{

this.w=w;

this.l=l;

this.s=s;

}

public void area()

{

double a;

a=w*l;

System.out.println("the area of reactangl is = "+a);

}

class square extends rectangle implements shape

{

int s;

square(int w,int l,int s)

{

super(w,l,s);

}

public void area()

{

super.area();

double a;

a=s*s;

System.out.println("the area of square is = "+a);

}

class circle implements shape

{

int r;

circle(int r)

{

this.r=r;

}

public void area()

{

double a;

a=3.14*r*r;

System.out.println("the area of circle = "+a);

}

class slip7_3

{

public static void main(String ar[])throws IOException

{

int ra,le,wd,si;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.print("enter a width of rectangel = ");

wd=Integer.parseInt(br.readLine());

System.out.print("enter a length of rectangel = ");

le=Integer.parseInt(br.readLine());

System.out.println();

System.out.print("enter side of square = ");

si=Integer.parseInt(br.readLine());

square o2=new square(wd,le,si);

o2.area();

System.out.println();

System.out.print("enter radius of circle = ");

ra=Integer.parseInt(br.readLine());

circle o3=new circle(ra);

o2.area();

System.out.println();

}

/*=================output===================

smj@smj-virtual-machine:~$ javac slip7_3.java

smj@smj-virtual-machine:~$ java slip7_3

enter a width of rectangel = 3

enter a length of rectangel = 4

enter side of square = 5

the area of reactangl is = 12.0

the area of square is = 0.0

enter radius of circle = 7

the area of reactangl is = 12.0

the area of square is = 0.0

smj@smj-virtual-machine:~$

//========slip 6_3======//

import java.io.*;

class Insfficiantbalances extends Exception

{

}

class savingAccount

{

int acc_no;

double balances;

String name;

savingAccount(double balances,int acc_no,String name)

{

this.balances=balances;

this.acc_no=acc_no;

this.name=name;

System.out.println();

System.out.println("the account name is = "+name);

System.out.println("the account number is = "+acc_no);

System.out.println("the account balances is = "+balances);

}

void withdraw()throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.print("enter a amount ot be withdraw = ");

double w_amt=Double.parseDouble(br.readLine());

try

{

if(w_amt>(balances-500))

{

throw new Insfficiantbalances();

}

else

{

balances=balances-w_amt;

System.out.println("collect cash");

}

catch(Insfficiantbalances e)

{

System.out.println("insufficient balances");

}

void diposit() throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("enter diposit amount = ");

double d_amt=Double.parseDouble(br.readLine());

balances=balances+d_amt;

System.out.println("the total amount is = "+balances);

}

void view_balances()

{

System.out.println("present balances is = "+balances);

}

class slip2

{

public static void main(String ar[])throws IOException

{

int ch;

int c;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

savingAccount o1=new savingAccount(5000,1123415,"saving account");

System.out.println();

{

System.out.println("1:withdraw money\n2:diposit\n3:view balances\n\n");

System.out.print("enter your choices = ");

ch=Integer.parseInt(br.readLine());

switch(ch)

{

case 1: o1.withdraw();

break;

case 2: o1.diposit();

break;

case 3: o1.view_balances();

break;

default:System.out.println("invalid case");

}

System.out.println();

System.out.println("you want continue or not (1/0)");

c=Integer.parseInt(br.readLine());

if(c==0)

break;

}while(true);

}

/*=============output=============

smj@smj-virtual-machine:~$ javac slip2.java

smj@smj-virtual-machine:~$ java slip2

the account name is = saving account

the account number is = 1123415

the account balances is = 5000.0

1:withdraw money

2:diposit

3:view balances

enter your choices = 1

enter a amount ot be withdraw = 5000

insufficient balances

you want continue or not (1/0)

1:withdraw money

2:diposit

3:view balances

enter your choices = 3

present balances is = 5000.0

you want continue or not (1/0)

1:withdraw money

2:diposit

3:view balances

enter your choices = 1

enter a amount ot be withdraw = 4000

collect cash

you want continue or not (1/0)

1:withdraw money

2:diposit

3:view balances

enter your choices = 1500

invalid case

you want continue or not (1/0)

1:withdraw money

2:diposit

3:view balances

enter your choices = 3

present balances is = 1000.0

you want continue or not (1/0)

1:withdraw money

2:diposit

3:view balances

enter your choices = 1

enter a amount ot be withdraw = 600

insufficient balances

you want continue or not (1/0)

1:withdraw money

2:diposit

3:view balances

enter your choices = 3

present balances is = 1000.0

you want continue or not (1/0)

1:withdraw money

2:diposit

3:view balances

enter your choices = 1

enter a amount ot be withdraw = 500

collect cash

you want continue or not (1/0)

1:withdraw money

2:diposit

3:view balances

enter your choices = 3

present balances is = 500.0

you want continue or not (1/0)

//slip 7_3//

import java.io.*;

interface shape

{

public void area();

}

class rectangle implements shape

{

int w,l,s;

rectangle(int w,int l,int s)

{

this.w=w;

this.l=l;

this.s=s;

}

public void area()

{

double a;

a=w*l;

System.out.println("the area of reactangl is = "+a);

}

class square extends rectangle implements shape

{

int s;

square(int w,int l,int s)

{

super(w,l,s);

}

public void area()

{

super.area();

double a;

a=s*s;

System.out.println("the area of square is = "+a);

}

class circle implements shape

{

int r;

circle(int r)

{

this.r=r;

}

public void area()

{

double a;

a=3.14*r*r;

System.out.println("the area of circle = "+a);

}

class slip7_3

{

public static void main(String ar[])throws IOException

{

int ra,le,wd,si;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.print("enter a width of rectangel = ");

wd=Integer.parseInt(br.readLine());

System.out.print("enter a length of rectangel = ");

le=Integer.parseInt(br.readLine());

System.out.println();

System.out.print("enter side of square = ");

si=Integer.parseInt(br.readLine());

square o2=new square(wd,le,si);

o2.area();

System.out.println();

System.out.print("enter radius of circle = ");

ra=Integer.parseInt(br.readLine());

circle o3=new circle(ra);

o2.area();

System.out.println();

}

/*=================output===================

smj@smj-virtual-machine:~$ javac slip7_3.java

smj@smj-virtual-machine:~$ java slip7_3

enter a width of rectangel = 3

enter a length of rectangel = 4

enter side of square = 5

the area of reactangl is = 12.0

the area of square is = 0.0

enter radius of circle = 7

the area of reactangl is = 12.0

the area of square is = 0.0

smj@smj-virtual-machine:~$

//======slip 7_1=======//

import java.io.*;

class slip7_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int i,n;

int a[]=new int[12];

int min;

System.out.print("enter a no you want = ");

n=Integer.parseInt(br.readLine());

for(i=0;i<n;i++)

{

System.out.print("enter a no = ");

a[i]=Integer.parseInt(br.readLine());

}

min=a[0];

for(i=0;i<n;i++)

{

if(min>a[i])

{

min=a[i];

}

System.out.println("The samll no is = "+min);

}

/*==================output=============

smj@smj-virtual-machine:~$ javac slip7_1.java

smj@smj-virtual-machine:~$ java slip7_1

enter a no you want = 3

enter a no = 12

enter a no = 4

enter a no = 56

The samll no is = 4

smj@smj-virtual-machine:~$

//slip 8_1//

import java.io.*;

class slip8_1

{

public static void main(String arg[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int no,rem,rev=0;

System.out.printf("enter a no = ");

no=Integer.parseInt(br.readLine());

while(no!=0)

{

rem=no%10;

rev=rev*10+rem;

no=no/10;

}

System.out.println("The revers no is = "+rev);

}

/*===================output==============

smj@smj-virtual-machine:~$ javac slip8_1.java

smj@smj-virtual-machine:~$ java slip8_1

enter a no = 123

The revers no is = 321

smj@smj-virtual-machine:~$ */

//=======slip8_2=========//

import java.util.*;

import java.io.*;

class slip8_2

{

public static void main(String arg[])throws IOException

{

String name;

double salary;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

Hashtable ht=new Hashtable();

String ch;

{

System.out.print("Enter a Emp name = ");

name=br.readLine();

System.out.print("Enter a Emp salary = ");

salary=Double.parseDouble(br.readLine());

ht.put(name,salary);

System.out.print("you want continue Y/N = ");

ch=br.readLine();

}

while(ch.equals("y"));

System.out.println("Emp name \t Salary");

Set s=ht.keySet();

Iterator it=s.iterator();

while(it.hasNext())

{

Object k=it.next();

Object v=ht.get(k);

System.out.println(k+"\t"+v);

}

System.out.print("Enter a name of spacific Emp = ");

String em=br.readLine();

if(ht.containsKey(em))

{

System.out.println("Emp salary is = "+salary);

}

else

{

System.out.println("Emp salary is not found");

}

/*=================== output==============

smj@smj-virtual-machine:~$ javac slip8_2.java

smj@smj-virtual-machine:~$ java slip8_2

Enter a Emp name = aaaa

Enter a Emp salary = 60000

you want continue Y/N = y

Enter a Emp name = bbbb

Enter a Emp salary = 70000

you want continue Y/N = n

Emp name Salary

aaaa 60000.0

bbbb 70000.0

//====slip9_1===//

import java.io.*;

class slip9_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int a;

System.out.print("enter a table no you want = ");

a=Integer.parseInt(br.readLine());

int i;

for(i=1;i<=10;i++)

{

System.out.println(a+" * "+i+" ="+a*i);

}

/*===============output==============

smj@smj-virtual-machine:~$ javac slip9_1.java

smj@smj-virtual-machine:~$ java slip9_1

enter a table no you want = 2

2 * 1 =2

2 * 2 =4

2 * 3 =6

2 * 4 =8

2 * 5 =10

2 * 6 =12

2 * 7 =14

2 * 8 =16

2 * 9 =18

2 * 10 =20

smj@smj-virtual-machine:~$

//slip 9_2//

import java.io.*;

class MyNumber

{

public int no;

public MyNumber()

{

no=0;

}

public MyNumber(int no)

{

this.no=no;

}

public void isNegative()

{

if(no<0)

{

System.out.println("no is Negative");

}

public void isPositive()

{

if(no>0)

{

System.out.println("no is Positive");

}

public void isOdd()

{

if(no%2!=0)

{

System.out.println("no is Odd");

}

public void isEven()

{

if(no%2==0)

{

System.out.println("no is Even");

}

class slip9_2

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int num;

System.out.print("Enter a no =");

num=Integer.parseInt(br.readLine());

MyNumber mn=new MyNumber(num);

mn.isNegative();

mn.isPositive();

mn.isOdd();

mn.isEven();

}

/*===================output==============

smj@smj-virtual-machine:~$ javac slip9_2.java

smj@smj-virtual-machine:~$ java slip9_2

Enter a no =4

no is Positive

no is Even

smj@smj-virtual-machine:~$ javac slip9_2.java

smj@smj-virtual-machine:~$ java slip9_2

Enter a no =1

no is Positive

no is Odd

smj@smj-virtual-machine:~$ javac slip9_2.java

smj@smj-virtual-machine:~$ java slip9_2

Enter a no =-10

no is Negative

no is Even

smj@smj-virtual-machine:~$ javac slip9_2.java

smj@smj-virtual-machine:~$ java slip9_2

Enter a no =11

no is Positive

no is Odd

smj@smj-virtual-machine:~$

//========slip 12_1 =======//

import java.io.*;

class slip12_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int n1,n2,gcd=1,i;

System.out.print("Enter a n1 = ");

n1=Integer.parseInt(br.readLine());

System.out.print("Enter a n2 = ");

n2=Integer.parseInt(br.readLine());

for(i=1;i<=n1 && i<=n2;i++)

{

if(n1%i==0 && n2%i==0)

gcd=i;

}

System.out.println();

System.out.println("GCD of "+n1+" and "+n2+ " = "+gcd);

System.out.println();

}

/*===============output===================

smj@smj-virtual-machine:~$ javac slip12_1.java

smj@smj-virtual-machine:~$ java slip12_1

Enter a n1 = 24

Enter a n2 = 27

GCD of 24 and 27 = 3

smj@smj-virtual-machine:~$

smj@smj-virtual-machine:~$ javac slip12_1.java

smj@smj-virtual-machine:~$ java slip12_1

Enter a n1 = 212

Enter a n2 = 34

GCD of 212 and 34 = 2

//========slip 12_3==========//

import java.io.*;

class emp

{

int id;

String name,dept;

double salary;

public emp()

{}

public emp(int id,String name,String dept,double salary)

{

this.id=id;

this.name=name;

this.dept=name;

this.salary=salary;

}

public void accept()throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.print("Enter a Emp id = ");

id=Integer.parseInt(br.readLine());

System.out.print("Enter a Emp Name = ");

name=br.readLine();

System.out.print("Enter a Emp dept = ");

dept=br.readLine();

System.out.print("Enter a Emp salary = ");

salary=Double.parseDouble(br.readLine());

}

public void display()

{

System.out.println("The Emp id is = "+id);

System.out.println("The Emp Name is = "+name);

System.out.println("The Emp dept is = "+dept);

System.out.println("The Emp salary is = "+salary);

}

class Manager extends emp

{

double total_salary,bonus;

Manager()

{}

public Manager(int id,String name,String dept,double salary,double bonus)

{

super(id,name,dept,salary);

this.bonus=bonus;

}

public void accept()throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.print("Enter a manager id = ");

id=Integer.parseInt(br.readLine());

System.out.print("Enter a manager Name = ");

name=br.readLine();

System.out.print("Enter a manager dept = ");

dept=br.readLine();

System.out.print("Enter a manager salary = ");

salary=Double.parseDouble(br.readLine());

System.out.print("Enter a manager bonus = ");

bonus=Double.parseDouble(br.readLine());

total_salary=salary+bonus;

}

public void display()

{

System.out.println();

System.out.println("The manager id is = "+id);

System.out.println("The manager Name is = "+name);

System.out.println("The manager dept is = "+dept);

System.out.println("The manager salary is = "+salary);

System.out.println("The manager total salary is = "+total_salary);

}

class slip12_3

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

double max_s=0;

int i,n;

emp o1=new emp();

o1.accept();

System.out.println();

o1.display();

System.out.println();

System.out.print("Enter a how many Manager = ");

n=Integer.parseInt(br.readLine());

Manager o2[]=new Manager[n];

System.out.println();

for(i=0;i<n;i++)

{

o2[i]=new Manager();

o2[i].accept();

}

System.out.println();

for(i=0;i<n;i++)

{

o2[i].display();

}

System.out.println();

max_s=o2[0].salary;

for(i=0;i<n;i++)

{

if(max_s<o2[i].salary)

{

max_s=o2[i].salary;

}

System.out.println();

for(i=0;i<n;i++)

{

if(max_s==o2[i].salary)

{

System.out.println("The Maximum salary of Manager is = "+o2[i].name);

System.out.println("The Maximum salary of Manager is = "+max_s);

}

System.out.println();

}

/*===================output================

smj@smj-virtual-machine:~$ javac slip12_3.java

smj@smj-virtual-machine:~$ java slip12_3

Enter a Emp id = 111

Enter a Emp Name = Ankit Pawar

Enter a Emp dept = IT

Enter a Emp salary = 50000

The Emp id is = 111

The Emp Name is = Ankit Pawar

The Emp dept is = IT

The Emp salary is = 50000.0

Enter a how many Manager = 2

Enter a manager id = 10101

Enter a manager Name = Jagdish Dusane

Enter a manager dept = IT Manager

Enter a manager salary = 10000

Enter a manager bonus = 50000

Enter a manager id = 20202

Enter a manager Name = Shubham Garad

Enter a manager dept = bankig

Enter a manager salary = 4000

Enter a manager bonus = 5000

The manager id is = 10101

The manager Name is = Jagdish Dusane

The manager dept is = IT Manager

The manager salary is = 10000.0

The manager total salary is = 60000.0

The manager id is = 20202

The manager Name is = Shubham Garad

The manager dept is = banking

The manager salary is = 4000.0

The manager total salary is = 9000.0

The Maximum salary of Manager is = Jagdish Dusane

The Maximum salary of Manager is = 10000.0

smj@smj-virtual-machine:~$

//========slip 13_1=====//

import java.io.*;

class slip13_1

{

public static void main(String ar[])throws IOException

{

int no,fact=1,i;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.print("Enter a no = ");

no=Integer.parseInt(br.readLine());

for(i=1;i<=no;i++)

{

fact=fact*i;

}

System.out.println("the Factorial of no is = "+fact);

}

/*==================Output=================

smj@smj-virtual-machine:~$ javac slip13_1.java

smj@smj-virtual-machine:~$ java slip13_1

Enter a no = 5

the Factorial of no is = 120

smj@smj-virtual-machine:~$

//========slip 13_2========//

import java.io.*;

class slip13_2

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int a[]=new int[12];

int n,i,j;

System.out.print("enter a how many no you want = ");

n=Integer.parseInt(br.readLine());

for(i=0;i<n;i++)

{

System.out.print("enter a no = ");

a[i]=Integer.parseInt(br.readLine());

}

System.out.println("Before sorting ");

for(i=0;i<n;i++)

{

System.out.println(a[i]);

}

for(i=0;i<n;i++)

{

for(j=0;j<n-i-1;j++)

{

if(a[j]<a[j+1])

{

int t;

t=a[j];

a[j]=a[j+1];

a[j+1]=t;

}

System.out.println();

System.out.println("After sorting ");

for(i=0;i<n;i++)

{

System.out.println(a[i]);

}

/*==================Output=================

smj@smj-virtual-machine:~$ javac slip13_2.java

smj@smj-virtual-machine:~$ java slip13_2

enter a how many no you want = 4

enter a no = 12

enter a no = 1

enter a no = 32

enter a no = 4

Before sorting

After sorting

smj@smj-virtual-machine:~$

//slip 13_3//

import java.io.*;

class nozero extends Exception

{

}

class plogic

{

public void prime(int n)

{

int i,m=0,temp=0;

m=n/2;

if(n==0 || n==1)

{

System.out.println("is not prime no ");

}

else

{

for(i=2;i<=m;i++)

{

if(n%i==0)

{

System.out.println("no is not prime");

temp=1;

break;

}

if(temp==0)

{

System.out.println("no is prime");

}

class slip13_3

{

public static void main(String arg[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int no;

System.out.printf("enter a no = ");

no=Integer.parseInt(br.readLine());

try

{

if(no==0)

{

throw new nozero();

}

else

{

System.out.println("no is not zero");

}

catch(nozero e)

{

System.out.println("no is zero");

}

plogic o1=new plogic();

o1.prime(no);

}

/*===============output=====================

smj@smj-virtual-machine:~$ javac prime.java

smj@smj-virtual-machine:~$ java prime

enter a no = 1

no is not zero

is not prime no

smj@smj-virtual-machine:~$ javac prime.java

smj@smj-virtual-machine:~$ java prime

enter a no = 2

no is not zero

no is prime

smj@smj-virtual-machine:~$ javac prime.java

smj@smj-virtual-machine:~$ java prime

enter a no = 3

no is not zero

no is prime

smj@smj-virtual-machine:~$ javac prime.java

smj@smj-virtual-machine:~$ java prime

enter a no = 4

no is not zero

no is not prime

smj@smj-virtual-machine:~$*/

//====slip 14_1====//

import java.io.*;

class slip14_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int a=0,b=1,c,i,n;

System.out.print("Enter a no upto fibo series you want = ");

n=Integer.parseInt(br.readLine());

System.out.println();

System.out.println(a);

System.out.println(b);

for(i=0;i<n;i++)

{

c=a+b;

a=b;

b=c;

System.out.println(c);

}

/*===================output==============

smj@smj-virtual-machine:~$ javac slip14_1.java

smj@smj-virtual-machine:~$ java slip14_1

Enter a no upto fibo series you want = 10

smj@smj-virtual-machine:~$

//=========slip 14_2 =======//

import java.io.*;

class slip14_2

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

String str;

char s;

int i;

int cn=0;

System.out.print("Enter a String = ");

str=br.readLine();

int count=str.length();

System.out.println("the count is = "+count);

System.out.print("Search a spacific char in the String = ");

s=(char)br.read();

for(i=0;i<count;i++)

{

if(s==str.charAt(i))

{

System.out.println();

cn++;

}

System.out.println();

System.out.println("char is same count = "+cn);

System.out.println();

}

/*smj@smj-virtual-machine:~$ javac an.java

smj@smj-virtual-machine:~$ java an

Enter a String = jagdish

the count is = 7

Search a spacific char in the String = j

char is same count = 1

smj@smj-virtual-machine:~$

//=======slip 14_3 =========//

import java.awt.*;

import javax.swing.*;

public class slip14_3

{

JFrame f=new JFrame("Login window");

slip14_3()

{

JLabel l1=new JLabel("User Name");

JLabel l2=new JLabel("Password");

JTextField t1=new JTextField(20);

JTextField t2=new JPasswordField(20);

JButton login=new JButton("LOGIN");

JButton end=new JButton("REGISTER");

f.setLayout(new GridLayout(3,2));

f.add(l1);

f.add(t1);

f.add(l2);

f.add(t2);

f.add(login);

f.add(end);

f.setSize(400,150);

f.setVisible(true);

}

public static void main(String ar[])

{

slip14_3 a=new slip14_3();

}

//=======slip 15_1 ===========//

import java.io.*;

class slip15_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int a,b,c;

System.out.println("Enter a two no = ");

a=Integer.parseInt(br.readLine());

b=Integer.parseInt(br.readLine());

c=a+b;

System.out.println();

System.out.println("The addition is = "+c);

System.out.println();

}

/*===================output==================

smj@smj-virtual-machine:~$ javac slip15_1.java

smj@smj-virtual-machine:~$ java slip15_1

Enter a two no =

The addition is = 46

smj@smj-virtual-machine:~$

//slip 15_2

import java.io.*;

import java.lang.Math;

abstract class shape

{

abstract void calc_area();

abstract void calc_volume();

}

class sphere extends shape

{

int radius;

double a;

public sphere(int radius)

{

this.radius=radius;

}

public void calc_area()

{

a=4*3.14*radius*radius;

System.out.println("\nThe Area of sphere is = "+a);

}

public void calc_volume()

{

double v;

v=4*3.14*radius*radius*radius;

System.out.println("\nThe volume of sphere is = "+v);

}

class Cone extends shape

{

public int hight;

public int radius;

public Cone(int hight,int radius)

{

this.hight=hight;

this.radius=radius;

}

public void calc_area()

{

double a;

a=3.14*radius*(radius+Math.sqrt(hight*hight+radius*radius));

System.out.println("\nThe Area of cone is = "+a);

}

public void calc_volume()

{

double v;

v=3.14*radius*radius*hight/3;

System.out.println("\nThe Volume of cone = "+v);

}

class slip15_2

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int r,l,h;

System.out.print("enter a radius of sphere = ");

r=Integer.parseInt(br.readLine());

sphere ob1=new sphere(r);

ob1.calc_area();

ob1.calc_volume();

System.out.print("enter a hight of cone = ");

h=Integer.parseInt(br.readLine());

System.out.print("enter a radius of cone = ");

l=Integer.parseInt(br.readLine());

Cone ob2=new Cone(l,h);

ob2.calc_area();

ob2.calc_volume();

System.out.println();

}

/*==================output==================

smj@smj-virtual-machine:~$ javac slip15_2.java

smj@smj-virtual-machine:~$ java slip15_2

enter a radius of sphere = 4

The Area of sphere is = 200.96

The volume of sphere is = 803.84

enter a hight of cone = 2

enter a radius of cone = 3

The Area of cone is = 35.20286200991386

The Volume of cone = 12.56

smj@smj-virtual-machine:~$

//=====slip15_3========//

<html>

<body>

</applet>

</body>

</html>

//=====slip15_3========//

import java.applet.*;

import java.awt.*;

import java.awt.event.*;

public class slip15_3 extends Applet implements MouseListener

{

private int x,y=10;

private String s="";

public void init()

{

addMouseListener(this);

}

public void paint(Graphics g)

{

g.drawString(s+"at"+"("+x+","+y+")",50,50);

}

private void setValues(String event,int x,int y)

{

s=event;

this.x=x;

this.y=y;

repaint();

}

public void mouseMoved(MouseEvent e)

{

setValues("Moved",e.getX(),e.getY());

}

public void mouseClicked(MouseEvent e)

{

setValues("Clicked",e.getX(),e.getY());

}

public void mouseReleased(MouseEvent e)

{

setValues("Release",e.getX(),e.getY());

}

public void mousePressed(MouseEvent e)

{

setValues("Pressed",e.getX(),e.getY());

}

public void mouseEntered(MouseEvent e)

{

setValues("enter",e.getX(),e.getY());

}

public void mouseExited(MouseEvent e)

{

setValues("exit",e.getX(),e.getY());

}

/*=================OUTPUT=================

javac slip15_3.java

smj@smj-virtual-machine:~$ appletviewer slip15_3.html

//=======slip 16_1=====//

import java.io.*;

class slip16_1

{

public static void main(String ar[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

int base,exp;

System.out.print("Enter a base no = ");

base=Integer.parseInt(br.readLine());

System.out.print("Enter a exponent no = ");

exp=Integer.parseInt(br.readLine());

int ans=power(base,exp);

System.out.println(base+" ^ "+exp+" = "+ans);

}

public static int power(int base,int exp)

{

if(exp!=0)

return(base*power(base,exp-1));

else

return 1;

}

/*=====================output================

smj@smj-virtual-machine:~$ javac slip16_1.java

smj@smj-virtual-machine:~$ java slip16_1

Enter a base no = 2

Enter a exponent no = 2

2 ^ 2 = 4

smj@smj-virtual-machine:~$

//=======slip16_2=========//

import java.util.*;

import java.io.*;

class slip16_2

{

public static void main(String arg[])throws IOException

{

String name;

double salary;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

Hashtable ht=new Hashtable();

String ch;

{

System.out.print("Enter a Emp name = ");

name=br.readLine();

System.out.print("Enter a Emp salary = ");

salary=Double.parseDouble(br.readLine());

ht.put(name,salary);

System.out.print("you want continue Y/N = ");

ch=br.readLine();

}

while(ch.equals("y"));

System.out.println("Emp name \t Salary");

Set s=ht.keySet();

Iterator it=s.iterator();

while(it.hasNext())

{

Object k=it.next();

Object v=ht.get(k);

System.out.println(k+"\t"+v);

}

System.out.print("Enter a name of spacific Emp = ");

String em=br.readLine();

if(ht.containsKey(em))

{

System.out.println("Emp salary is = "+salary);

}

else

{

System.out.println("Emp salary is not found");

}

/*=================== output==============

smj@smj-virtual-machine:~$ javac slip16_2.java

Note: slip8_2.java uses unchecked or unsafe operations.

Note: Recompile with -Xlint:unchecked for details.

smj@smj-virtual-machine:~$ java slip16_2

Enter a Emp name = aaaa

Enter a Emp salary = 60000

you want continue Y/N = y

Enter a Emp name = bbbb

Enter a Emp salary = 70000

you want continue Y/N = n

Emp name Salary

aaaa 60000.0

bbbb 70000.0

Enter a name of spacific Emp = bbbb

Emp salary is = 70000.0

smj@smj-virtual-machine:~$

//=======slip16_3========//

import javax.swing.*;

import java.awt.*;

class slip16_3

{

public static void main(String arg[])

{

JFrame f=new JFrame("Calculator");

JPanel p1=new JPanel();

JPanel p2=new JPanel();

JTextField tf=new JTextField();

JButton b1=new JButton("7");

JButton b2=new JButton("4");

JButton b3=new JButton("1");

JButton b4=new JButton("0");

JButton b5=new JButton("8");

JButton b6=new JButton("5");

JButton b7=new JButton("2");

JButton b8=new JButton(".");

JButton b9=new JButton("9");

JButton b10=new JButton("6");

JButton b11=new JButton("3");

JButton b12=new JButton("+");

JButton b13=new JButton("-");

JButton b14=new JButton("*");

JButton b15=new JButton("/");

JButton b16=new JButton("=");

p1.setLayout(new BorderLayout());

p2.setLayout(new GridLayout(4,4));

p1.add(tf,"North");

p2.add(b1);

p2.add(b2);

p2.add(b3);

p2.add(b4);

p2.add(b5);

p2.add(b6);

p2.add(b7);

p2.add(b8);

p2.add(b9);

p2.add(b10);

p2.add(b11);

p2.add(b12);

p2.add(b13);

p2.add(b14);

p2.add(b15);

p2.add(b16);

p1.add(p2);

f.add(p1);

f.setSize(500,300);

f.setVisible(true);

}

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