Java Exception,Applet

 

Exception

 

 

An Exception is an abnormal condition that is caused by a run-time errors.

 

 

import java.io.*;

public class exp

{

public static void main(String arg[])

{

int a=5,b=0,c;

try

{

c=a/b;

}

catch(ArithmeticException e)

{

System.out.println("Divide by zero");

}

}

}

 

 

 

import java.io.*;

public class exp

{

public static void main(String arg[])

{

int a=0,b=0,c;

try

{

DataInputStream in=new DataInputStream(System.in);

System.out.println("Enter a value:");

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

System.out.println("Enter b value:");

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

if(b==0)throw new ArithmeticException();

c=a/b;

System.out.println("Ratio="+c);

}

catch(IOException e)

{

System.out.println(e);

}

catch(ArithmeticException e)

{

System.out.println("Divide by zero");

}

}

}

 

 

 

 

import java.io.*;

class exp

{

public static void main(String arg[])

{

try

{

String name;

DataInputStream in=new DataInputStream(System.in);

System.out.println("Enter your name:");

name=in.readLine();

int n=name.length();

System.out.println("The length of the String:"+n);

}

catch(IOException e)

{

}

}

}

 

 

 

import java.io.*;

public class exp

{

public static void main(String arg[])

{

try

{

int a,b,c;

DataInputStream in=new DataInputStream(System.in);

System.out.println("Enter a value:");

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

System.out.println("Enter b value:");

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

c=a+b;

System.out.println("The sum of the value is="+c);

}

catch(IOException e)

{

System.out.println(e);

}

}

}

 

 

 

import java.io.*;

class exp

{

public static void main(String arg[])

{

try

{

String name;

DataInputStream in=new DataInputStream(System.in);

System.out.println("Enter your name:");

name=in.readLine();

System.out.println("Your name is:"+name);

}

catch(IOException e)

{

}

}

}                     

 

Applet

 

import java.awt.*;

import java.applet.*;

 

/*<applet code="sam.class" height=300 width=300>

</applet>*/

 

public class sam extends java.applet.Applet

{

String msg;

public void paint(Graphics g)

{

msg="Hay ! Applet";

g.drawString(msg,40,30);

}

}

 

 

import java.awt.*;

import java.applet.*;

 

/*<applet code="sam.class" height=300 width=300>

</applet>*/

 

public class sam extends java.applet.Applet

{

public void paint(Graphics g)

{

g.setColor(Color.red);

g.drawLine(10,10,70,40);

g.setColor(Color.green);

g.drawRect(10,10,70,40);

g.setColor(Color.blue);

g.drawRoundRect(50,90,110,50,70,70);

g.drawOval(180,150,110,50);

}

}

 

 

import java.awt.*;

import java.applet.*;

 

/*<applet code="sam.class" height=300 width=300>

</applet>*/

 

public class sam extends java.applet.Applet

{

public void paint(Graphics g)

{

g.setColor(Color.green);

g.fillRect(10,10,70,40);

g.setColor(Color.blue);

g.fillRoundRect(50,90,110,50,70,70);

g.setColor(Color.red);

g.fillOval(180,150,110,50);

}

}

 

import java.awt.*;

import java.applet.*;

 

/*<applet code="sam.class" height=300 width=300>

</applet>*/

 

public class sam extends java.applet.Applet

{

public void paint(Graphics g)

{

g.setColor(Color.black);

int x[]={10,30,40,30};

int y[]={30,50,30,10};

g.drawPolygon(x,y,4);

}

}

 

 

import java.awt.*;

import java.applet.*;

 

/*<applet code="sam.class" height=300 width=300>

</applet>*/

 

public class sam extends java.applet.Applet

{

public void init()

{

Label l=new Label("India");

Button b=new Button("Welcome");

add(l);

add(b);

}

}

 

import java.awt.*;

import java.applet.*;

import java.awt.event.*;

 

/*<applet code="sam.class" height=300 width=300>

</applet>*/

 

public class sam extends Applet implements

ActionListener

{

TextField t;

public void init()

{

t=new TextField(15);

add(t);

t.setText("Good Morning");

add(t);

t.addActionListener(this);

}

public void actionPerformed(ActionEvent e)

{

repaint();

}

public void paint(Graphics g)

{

g.drawString(t.getSelectedText(),10,50);

}

}

 

 

import java.awt.*;

import java.applet.*;

import java.awt.event.*;

 

/*<applet code="sam.class" height=300 width=300>

</applet>*/

 

public class sam extends Applet implements

AdjustmentListener

{

Scrollbar s;

TextField t,t1;

Label l;

public void init()

{

s=new Scrollbar(Scrollbar.VERTICAL,10,1,0,100);

t=new TextField();

l=new Label("Action");

t1=new TextField(30);

add(s);

add(t);

add(l);

add(t1);

s.addAdjustmentListener(this);

}

public void adjustmentValueChanged(AdjustmentEvent

e)

{

String str=Integer.toString(s.getValue());

t.setText(str);

String s1=" ";

int i=e.getAdjustmentType();

if(i==1)

s1="Unit-increment";

if(i==2)

s1="Unit-decrement";

if(i==3)

s1="block-increment";

if(i==4)

s1="block-decrement";

if(i==5)

s1="Tracking";

t1.setText(s1);

}

}

 

 

import java.awt.*;

import java.applet.*;

import java.awt.event.*;

 

/*<applet code="sam.class" height=300 width=300>

</applet>*/

 

public class sam extends Applet implements

ItemListener

{

String st=" ";

Choice c;

TextField t;

public void init()

{

c=new Choice();

t=new TextField(30);

c.add("IT");

c.add("CS");

c.add("EEE");

 

add(c);

add(t);

c.addItemListener(this);

}

public void itemStateChanged(ItemEvent e)

{

st=c.getSelectedItem();

t.setText(st);

}

}