Develop a basic applet to display welcome to the world of

Code:

import java.applet.*;

import java.awt.*;

/*<applet code="Hello" width=400 height=400>

</applet>*/

public class Hello extends Applet

{

public void paint(Graphics g)

{

g.drawString("Welcome to the World of Applet !", 100, 100);

}

Output:

Comments

Develop a program using control loops in applets.

Code: import java.awt.*; import java.applet.*; public class Control extends Applet { public void paint(Graphics g) { for(int i=1;i<=4;i++) { if(i%2==0) { g.fillOval(90,i*50+10,50,50); g.setColor(Color.black); } else { g.fillOval(90,i*50+10,50,50); g.setColor(Color.red); } } } } /* <applet code=Control width=300 height=300> </applet> */ Output:

Define an exception called ‘NotMatchexception’ that is thrown when a string is not equal to ‘India’. Write a java program that uses this exception.

Code: import java.util.Scanner; class NotMatchException extends Exception { public NotMatchException (String str) { System.out.println(str); } } public class StringExc { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.print("Enter the string : "); String input = scan.nextLine(); try { if(input.equalsIgnoreCase("India")) System.out.println("String matched !!!"); else throw new NotMatchException ("String not matched !!!"); } catch (NotMatchException s) { ...

Develop a program to accept a Password from the user and throw “Authentication Failure” exception if the password is incorrect

import java.util.*; class Test { public static void main(String args[]) { try { System.out.println("Enter Password: "); Scanner obj=new Scanner(System.in); String pass= obj.nextLine(); if(!pass.equals("1234")) System.out.println("Authentication Failure"); else System.out.println("Welcome....!!"); } catch (Exception e) { System.out.println(""); } finally { System.out.println("Thank You.........!!!!!"); ...

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