// WelcomeApplet.java

// A first applet in Java

import javax.swing.JApplet; // import class JApplet

import java.awt.Graphics; // import class Graphics

public class WelcomeApplet extends JApplet {

public void paint( Graphics g )

{

g.drawString( "Welcome to Java Programming!", 25, 25 );

}

}

//WelcomeApplet2.java

// Displaying multiple strings

import javax.swing.JApplet; // import class JApplet

import java.awt.Graphics; // import class Graphics

public class WelcomeApplet2 extends JApplet {

public void paint( Graphics g )

{

g.drawString( "Welcome to", 25, 25 );

g.drawString( "Java Programming!", 25, 40 );

}

}

//WelcomeLines.java

// Displaying text and lines

import javax.swing.JApplet; // import class JApplet

import java.awt.Graphics; // import class Graphics

public class WelcomeLines extends JApplet {

public void paint( Graphics g )

{

g.drawLine( 15, 10, 210, 10 );

g.drawLine( 15, 30, 210, 30 );

g.drawString( "Welcome to Java Programming!", 25, 25 );

}

}

//AdditionApplet.java

// Adding two floating-point numbers

import java.awt.Graphics; // import class Graphics

import javax.swing.*; // import package javax.swing

public class AdditionApplet extends JApplet {

double sum; // sum of the values entered by the user

public void init()

{

String firstNumber, // first string entered by user

secondNumber; // second string entered by user

double number1, // first number to add

number2; // second number to add

// read in first number from user

firstNumber =

JOptionPane.showInputDialog(

"Enter first floating-point value" );

// read in second number from user

secondNumber =

JOptionPane.showInputDialog(

"Enter second floating-point value" );

// convert numbers from type String to type double

number1 = Double.parseDouble( firstNumber );

number2 = Double.parseDouble( secondNumber );

// add the numbers

sum = number1 + number2;

}

public void paint( Graphics g )

{

// draw the results with g.drawString

g.drawRect( 15, 10, 270, 20 );

g.drawString( "The sum is " + sum, 25, 25 );

}

}