exceptionframe.java

java灵感设计

package exception;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
/**
 * <p>Title: Exception Demo</p>
 * <p>Description: This is a Exception demo</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: d6-125</p>
 * @author Liujun
 * @version 1.0
 */

public class ExceptionFrame extends JFrame {
  JPanel contentPane;
  GridBagLayout gridBagLayout1 = new GridBagLayout();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JButton jButton3 = new JButton();
  JButton jButton4 = new JButton();
  JButton jButton5 = new JButton();
  JButton jButton6 = new JButton();

  //Construct the frame
  public ExceptionFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(ExceptionFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    jButton1.setText("除数为零");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    contentPane.setLayout(gridBagLayout1);
    this.setSize(new Dimension(213, 220));
    this.setTitle("Exception Frame Demo");
    jButton2.setText("数组越界");
    jButton2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton2_actionPerformed(e);
      }
    });
    jButton3.setText("使用了空指针");
    jButton3.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton3_actionPerformed(e);
      }
    });
    jButton4.setText("错误的赋值");
    jButton4.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton4_actionPerformed(e);
      }
    });
    jButton5.setText("文件找不到");
    jButton5.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton5_actionPerformed(e);
      }
    });
    jButton6.setToolTipText("");
    jButton6.setText("不知道的错误");
    jButton6.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton6_actionPerformed(e);
      }
    });
    contentPane.add(jButton1,     new GridBagConstraints(0, 0, 6, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 35, 0));
    contentPane.add(jButton2,     new GridBagConstraints(0, 1, 5, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 34, 0));
    contentPane.add(jButton3,    new GridBagConstraints(0, 2, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 7, 0));
    contentPane.add(jButton4,               new GridBagConstraints(0, 3, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 38, 0));
    contentPane.add(jButton5,        new GridBagConstraints(0, 4, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 39, 0));
    contentPane.add(jButton6,    new GridBagConstraints(0, 5, 4, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 9, 0));
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void jButton1_actionPerformed(ActionEvent e) {
     int[] a = new int[10];
    try {
      a[1] = a[2] / (a[3]-a[3]);
       }
      catch(RuntimeException ei)
        {
       JOptionPane.showMessageDialog(this, "捕捉运行时的例外:"+ei);//例外，显示出错信息。
        }
      catch(Exception ei)
      {
       JOptionPane.showMessageDialog(this, "捕捉例外:"+ei);//例外，显示出错信息。
      }
  }

  void jButton2_actionPerformed(ActionEvent e) {
     int[] a = new int[10];
    try {
      a[1] = a[10];
       }
      catch(RuntimeException ei)
        {
       JOptionPane.showMessageDialog(this, "捕捉运行时的例外:"+ei);//例外，显示出错信息。
        }
      catch(Exception ei)
      {
       JOptionPane.showMessageDialog(this, "捕捉例外:"+ei);//例外，显示出错信息。
      }
  }

  void jButton3_actionPerformed(ActionEvent e) {
     Frame a =null;
    try {
      a.show();
       }
      catch(RuntimeException ei)
        {
       JOptionPane.showMessageDialog(this, "捕捉运行时的例外:"+ei);//例外，显示出错信息。
        }
      catch(Exception ei)
      {
       JOptionPane.showMessageDialog(this, "捕捉例外:"+ei);//例外，显示出错信息。
      }
  }

  void jButton4_actionPerformed(ActionEvent e) {
     Frame f ;
    try {
        f = (Frame)e.getSource();
       }
      catch(RuntimeException ei)
        {
       JOptionPane.showMessageDialog(this, "捕捉运行时的例外:"+ei);//例外，显示出错信息。
        }
      catch(Exception ei)
      {
       JOptionPane.showMessageDialog(this, "捕捉例外:"+ei);//例外，显示出错信息。
      }
  }

  void jButton5_actionPerformed(ActionEvent e) {
    try { FileInputStream is
               = new FileInputStream("No such file");
       }
      catch(RuntimeException ei)
        {
       JOptionPane.showMessageDialog(this, "捕捉运行时的例外:"+ei);//例外，显示出错信息。
        }
      catch(Exception ei)
      {
       JOptionPane.showMessageDialog(this, "捕捉例外:"+ei);//例外，显示出错信息。
      }
  }

  void jButton6_actionPerformed(ActionEvent e) {
     try {
         throw  new UnknownError();
       }
      catch(RuntimeException ei)
        {
       JOptionPane.showMessageDialog(this, "捕捉运行时的例外:"+ei);//例外，显示出错信息。
        }
      catch(Exception ei)
      {
       JOptionPane.showMessageDialog(this, "捕捉例外:"+ei);//例外，显示出错信息。
      }
  }
}