Chapter 4.3, Problem 26STQ

Explanation of Solution

Loop is used to draw identical circles:

//Loop from 0 through number of circles

for (int i = 1; i <= 6; i++)

{

    //Set the color to fill

    gc.setColor(Color.BLUE);

    //Draw oval

    gc.fillOval(x, y, DIAMETER, DIAMETER);

    //Set the color to fill

    gc.setColor(Color.BLACK);

    //Draw the stroke

    gc.drawOval(x, y, DIAMETER, DIAMETER);

    //Update the value of x

    x += DIAMETER + GAP;

}

Explanation:

The above “for” loop is used to create six identical circles. For each iteration,

• The color “BLUE” is set using “setColor ()” method.
• An oval is drawn using “fillOval ()” method.
• The color “BLACK” is set using “setColor ()” method.
• A stroke is drawn using “drawOval ()” method.
• The value of “x” is updated.

Complete program:

The below program is used to create six identical circles using Java applet.

//Import required packages

import javax.swing.JApplet;

import java.awt.Graphics;

import java.awt.Color;

//Define the main class that extends application class

public class SelfTest26 extends JApplet

{

    //Declare required constant variables

    //Set the gap

    public static final int GAP = 50;

    //Set the value of diameter

    public static final int DIAMETER = 50;

    //Set the value of X_CENTER

    public static final int X_CENTER = 100;

    //Set the value of U_CENTER

    public static final int Y_CENTER = 100;

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