实验8_图形界面程序设计

1、山西大学计算机与信息技术学院实验报告姓 名学 号 专业班级计算机科学与技术课程名称 Java实验实验日期2014/5/29成 绩指导教师 陈千批改日期实验名称实验 8 图形界面程序设计一、实验目的掌握常用GUI控制组件及其事件处理。二、实验内容1编程包含一个标签和一个按钮，单击按钮时，标签的内容在“你好”和“再见”之间切换。程序代码：import java.awt.Color;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax

2、.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;public class ChangeGUI extends JFrame /* * */private static final long serialVersionUID = 1L;private JButton button;private JLabel label;public ChangeGUI() super("Say Hello");JPanel panel = new JPa

3、nel();JPanel panel2 = new JPanel();setLayout(new GridLayout(2, 1, 0, 5);button = new JButton("OK");button.setBackground(Color.ORANGE);button.setForeground(Color.RED);panel.add(button);button.addActionListener(new OKActionListener();label = new JLabel("你好");label.setForeground(Col

4、or.BLUE);panel2.add(label);add(panel2);add(panel);private class OKActionListener implements ActionListener public void actionPerformed(ActionEvent e) if (label.getText() = "你好") label.setText("再见"); else label.setText("你好");public static void main(String args) ChangeGUI

5、 change = new ChangeGUI();change.setSize(200, 100);change.setVisible(true);change.setLocationRelativeTo(null);change.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);运行结果贴图:图一2编程包含一个文本框和一个文本区域，文本框内容改变时，将文本框中的内容显示在文本区域中；在文本框中按回车键时，清空文本区域的内容。程序代码：import java.awt.Color;import java.awt.GridLayout;import j

6、ava.awt.event.KeyEvent;import java.awt.event.KeyListener;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JTextArea;import javax.swing.JTextField;import javax.swing.border.TitledBorder;public class ShowText extends JFrame /* * */private static final long serialVersionUID = 1L;p

7、rivate JTextField text1;private JTextArea text2;public ShowText() super("Tetx Show");JPanel p1 = new JPanel();p1.setBackground(Color.PINK);p1.setBorder(new TitledBorder("文本框");text1 = new JTextField(10);text1.addKeyListener(new TextListener();p1.add(text1);JPanel p2 = new JPanel(

8、);p2.setBackground(Color.PINK);p2.setBorder(new TitledBorder("文本区域");text2 = new JTextArea("原文本", 10, 10);text2.setLineWrap(true);text2.setEditable(false);p2.add(text2);setLayout(new GridLayout(2, 1, 0, 5);add(p1);add(p2);setSize(200, 200);setVisible(true);this.setLocationRelativ

9、eTo(null);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);private class TextListener implements KeyListener public void keyPressed(KeyEvent e) public void keyReleased(KeyEvent e) if (e.getKeyChar() != KeyEvent.VK_ENTER)text2.setText(text1.getText();public void keyTyped(KeyEvent e) if (e.getKeyChar()

10、= KeyEvent.VK_ENTER)text2.setText(null);public static void main(String args) JFrame frame = new ShowText();运行结果贴图:图二3编程包含一个复选按钮和一个普通按钮，复选按钮选中时，普通按钮的背景色为青色，未选中时为灰色。程序代码：import java.awt.Color;import java.awt.GridLayout;import java.awt.event.ItemEvent;import java.awt.event.ItemListener;import javax.swi

11、ng.JButton;import javax.swing.JCheckBox;import javax.swing.JFrame;import javax.swing.JPanel;public class ChangeButtonColor extends JFrame /* * */private static final long serialVersionUID = 1L;private JButton button;private JCheckBox checkBox;public ChangeButtonColor() super("改变按钮颜色");JPan

12、el p1 = new JPanel();p1.setBackground(Color.PINK);setLayout(new GridLayout(2, 1);button = new JButton("Hello");button.setSize(20, 20);button.setBackground(Color.GRAY);p1.add(button);JPanel p2 = new JPanel();p2.setBackground(Color.PINK);checkBox = new JCheckBox();checkBox.addItemListener(ne

13、w checkBoxListener();p2.add(checkBox);add(p1);add(p2);setSize(200, 200);setVisible(true);this.setLocationRelativeTo(null);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);private class checkBoxListener implements ItemListener public void itemStateChanged(ItemEvent e) if (checkBox.isSelected()button.se

14、tBackground(Color.CYAN);elsebutton.setBackground(Color.GRAY);public static void main(String args) ChangeButtonColor b = new ChangeButtonColor();运行结果贴图:图三4编程包含两个按钮和一个标签，将发生单击事件的按钮上的文本信息显示在标签中。提示：关键代码如下：       b1.addActionListener(new B1();     &#

15、160; b2.addActionListener(new B2();       class B1 implements ActionListener               public void actionPerformed(ActionEvent e)             

16、0;        who.setText("Button 1");                            class B2 implements ActionListener         

17、      public void actionPerformed(ActionEvent e)                      who.setText("Button 2");              &#

18、160;      程序代码：import java.awt.Color;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;public class ShowButtonText extends

19、 JFrame private JButton b1;private JButton b2;private JLabel label;public ShowButtonText() super("显示选中按钮信息");setLayout(new GridLayout(2, 1);JPanel p1 = new JPanel();p1.setBackground(Color.PINK);label = new JLabel("标签");label.setSize(20, 10);label.setBackground(Color.BLUE);p1.add(

20、label);add(p1);JPanel p2 = new JPanel();p2.setBackground(Color.PINK);b1 = new JButton("你好");b2 = new JButton("再见");ButtonListener b = new ButtonListener();b1.addActionListener(b);b2.addActionListener(b);p2.add(b1);p2.add(b2);add(p2);setSize(200, 200);setVisible(true);this.setLoca

21、tionRelativeTo(null);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);private class ButtonListener implements ActionListener public void actionPerformed(ActionEvent e) if (e.getSource() = b1)label.setText(b1.getText();else if (e.getSource() = b2)label.setText(b2.getText();public static void main(

22、String args) ShowButtonText s = new ShowButtonText();运行结果贴图:图四5编程确定当前鼠标的位置坐标。程序代码：import java.awt.Color;import java.awt.event.MouseEvent;import java.awt.event.MouseMotionListener;import javax.swing.JButton;import javax.swing.JFrame;public class LocateMouse extends JFrame private JButton location;pub

23、lic LocateMouse() super("寻找鼠标");location = new JButton("显示鼠标位置");location.setSize(20, 10);add(location);location.addMouseMotionListener(new MouseMotionListener() public void mouseDragged(MouseEvent e) public void mouseMoved(MouseEvent e) location.setText("鼠标现在位于（" + e.g

24、etX() + "," + e.getY() + ")"););setSize(300, 200);setLocationRelativeTo(null);setVisible(true);location.setBackground(Color.PINK);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);public static void main(String args) LocateMouse mouse = new LocateMouse();运行结果贴图:图五6编程使用BorderLayout布局

25、方式放置5个按钮。程序代码：import java.awt.BorderLayout;import java.awt.Color;import javax.swing.JButton;import javax.swing.JFrame;public class TestBorderLayout extends JFrame private JButton nButton = new JButton("北部");private JButton sButton = new JButton("南部");private JButton wButton = new

26、 JButton("西部");private JButton eButton = new JButton("东部");private JButton cButton = new JButton("中部");public TestBorderLayout() setLayout(new BorderLayout(5, 5);add(nButton, BorderLayout.NORTH);add(sButton, BorderLayout.SOUTH);add(wButton, BorderLayout.WEST);add(eButto

27、n, BorderLayout.EAST);add(cButton, BorderLayout.CENTER);nButton.setBackground(Color.PINK);sButton.setBackground(Color.PINK);wButton.setBackground(Color.PINK);eButton.setBackground(Color.PINK);cButton.setBackground(Color.PINK);public static void main(String args) TestBorderLayout t = new TestBorderLa

28、yout();t.setSize(250, 200);t.setVisible(true);t.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);t.setLocationRelativeTo(null);运行结果贴图:图六7. 编写程序，实现使用键盘上的上下左右箭头控制界面上图片的移动。移动到边界时从界面另一侧出现。移动过程中显示另一个图片，停止时恢复原来的图片。程序代码：import java.awt.Color;import java.awt.event.KeyEvent;import java.awt.event.KeyListener;im

29、port javax.swing.ImageIcon;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;public class MoveImage extends JFrame private ImageIcon oneIcon = new ImageIcon("image/happy.jpg");private ImageIcon twoIcon = new ImageIcon("image/hello.jpg");private JLabel label;JPanel p;public MoveImage() super("Image Move");setSize(500, 500);setLocationRelativeTo(null);label = new JLabel(oneIcon);p = new JPanel();setContentPane(p);p.setLayout(null);this.addKeyListener(new PanelListener();label.setBounds(0, 0, 100, 100);p.add(