Chapter 2 Programming Projects

1
Chapter 2 Programming Projects

• 2.1 Write an application that reads three
  integers and prints their average.
• import java.util.Scanner
• class AverageOfThree
• //--------------------------------------------
  --------------------- // Reads three integers
  from the user and prints their average.
  //------------------------------------------------
  -----------------
• public static void main (String args)
• int num1, num2, num3
• double average
• Scanner sc new Scanner (System.in)
• System.out.print ("Enter the first number
  ")
• num1 Integer.parseInt(sc.nextLine())
• System.out.print ("Enter the second
  number ")
• num2 Integer.parseInt(sc.nextLine())
• System.out.print ("Enter the third number
  ")
• num3 Integer.parseInt(sc.nextLine())

2
Continuation of AverageOfThree.java

• // Compute the average of num1, num2 and num3
• average (num1num2num3) /
  3 System.out.println ("The average is "
  average)

(double)
Does this work??
NO!
Now it works!
3
Chapter 2 Programming Projects

• 2.16 Write an applet that displays your name in
  shadow text by first drawing your name in black,
  then drawing it again slightly offset in a
  lighter color.
• import javax.swing.JAppletimport java.awt.
• public class ShadowName extends Japplet
• public void paint (Graphics page)
• setBackground (Color.yellow)
• page.setColor (Color.gray)
  page.drawString (Ralph Tindell", 50, 50)
• page.setColor (Color.black)
  page.drawString (Ralph Tindell", 49, 49)

4
Output of ShadowName Applet