Solutions to selected exercises - An Introduction to Graphical User Interfaces with Java Swing - page 289

39.

// and draw the rectangle

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g.fillRect(upperLeftX,upperLeftY,blackWidth,blackHeight);

42.
43. }

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45.
46.

}

File: its/ResizeJumpDisplay/DirectionPanel.java

package its.ResizeJumpDisplay; 1.

2.
3.

import java.awt.GridLayout;

import javax.swing.JButton; 4.

import javax.swing.JPanel; 5.

6.
7.

public class DirectionPanel extends JPanel {

8.
9.

public DirectionPanel(PositionModel posMod, ResizeJumpFrame parent) {

10.

GridLayout gLayout = new GridLayout(1,4);

11.

this .setLayout(gLayout);

12.

JButton upBut = new JButton("Up");

13.

JButton downBut = new JButton("Down");

14.

JButton rightBut = new JButton("Right");

15.

JButton leftBut = new JButton("Left");

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this .add(upBut);

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this .add(leftBut);

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this .add(rightBut);

19.

this .add(downBut);

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DirectionListener dirList = new DirectionListener(posMod,parent);

22.

upBut.addActionListener(dirList);

downBut.addActionListener(dirList); 23.

rightBut.addActionListener(dirList); 24.

leftBut.addActionListener(dirList); 25.

26.
27. }

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}