toolbarframe1.java

java swing 开发代码

// ToolbarFrame1.java
// A simple frame containing a "toolbar" made up of several java.awt.Button
// objects. We'll be converting the Buttons to JButtons in the
// ToolbarFrame2.java file.
//
package	jswing.ch02;

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

public class ToolbarFrame1 extends Frame {

  Button cutButton, copyButton, pasteButton;
  public ToolbarFrame1() {
    super("Toolbar Example (AWT)");
    setSize(450, 250);
    addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });

    ActionListener printListener = new ActionListener() {
      public void actionPerformed(ActionEvent ae) {
        System.out.println(ae.getActionCommand());
      }
    };

    Panel toolbar = new Panel();
    toolbar.setLayout(new FlowLayout(FlowLayout.LEFT));

    cutButton = new Button("Cut");
    cutButton.addActionListener(printListener);
    toolbar.add(cutButton);

    copyButton = new Button("Copy");
    copyButton.addActionListener(printListener);
    toolbar.add(copyButton);

    pasteButton = new Button("Paste");
    pasteButton.addActionListener(printListener);
    toolbar.add(pasteButton);

    // The "preferred" BorderLayout add call
    add(toolbar, BorderLayout.NORTH); 
  }

  public static void main(String args[]) {
    ToolbarFrame1 tf1 = new ToolbarFrame1();
    tf1.setVisible(true);
  }
}