Eine gute Antwort wäre:

An answer is given below.

Loop Options

The loop is a counting loop. Each iteration of the loop will draw one red circle when the loop body is filled in:

import java.applet.Applet;
import java.awt.*;

// assume that the drawing area is 300 by 150
public class tenCircles extends Applet
  final int width = 300, height = 150;

  public void paint ( Graphics gr )
    int count = 0;

    while ( count < 10 )

      count = count + 1;


There are many ways to fill in the blanks so the loop iterates 10 times, but usually it is best to have a counter that goes from 1 to 10, or from 0 to 9. Often arithmetic is easier when the loop counts from 0 to 9.

Now let us focus on drawing the circles. The idea is to draw 10 circles in a row, nicely spaced out across the screen.


The applet's drawing area is 300 pixels wide. If there are to be 10 circles, how wide is the area which will be used for each circle?