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`Add1' example program: add two numbers
Add1.java
// Add1.java
// A program that adds 2 and 2
// Kevin Boone, May 1999
// Like most programs that use applets, we need the following
// two lines to tell the compiler what an applet is
// and how it works.
import java.applet.Applet;
import java.awt.*;
// As in all Java programs we have to define a class. I am
// calling this class `Add1', so this program must be
// in a file called `Add1.java'
public class Add1 extends Applet
{
public void paint (Graphics g)
{
// ``int'' is short for `integer', meaning a whole number.
// So this line defines a thing called ``result'' which stores
// the result of adding 2 and 2.
int result = 2 + 2;
// The next line displays the text ``2+2='' on the screen
g.drawString ("2+2=", 20, 20);
// This line displays the result of the addition on the
// next line.
g.drawString (Integer.toString(result), 20, 40);
}
}
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