errorwarning.java

《Java实例入门》所有实例的源代码。所有的源文件都是.java文件

import java.awt.*;
import java.awt.event.*;
import java.io.*;


public class ErrorWarning extends Dialog implements ActionListener {
  private String err;

  public ErrorWarning(Frame frame,String errWarn){
    super(frame,"Warning",true);
    err = errWarn;
  }

  public void show(){
    Panel panel = new Panel();
    panel.add(okButton);
    addWindowListener(new WindowAdapter(){
                      public void windowClosing(WindowEvent e){
                          dispose();
                        }
                      });
    okButton.addActionListener(this);
    add("North",new Label(err,Label.CENTER));
    add(panel);
    setBackground(Color.lightGray);
    setSize(300,150);
    super.show();
  }

  public void actionPerformed(ActionEvent e) {
    Object eventSource = e.getSource();
    if(eventSource == okButton){
      dispose();
    }
  }
  private Button okButton = new Button("OK");
}