flow.java

learning java的源代码。书中每个实例都有相关的代码example。

//file: Flow.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Flow extends JPanel {

  public Flow(  ) {
    // FlowLayout is default layout manager for a JPanel
    add(new JButton("One"));
    add(new JButton("Two"));
    add(new JButton("Three"));
    add(new JButton("Four"));
    add(new JButton("Five"));
  }

  public static void main(String[] args) {
    JFrame f = new JFrame("Flow");
    f.addWindowListener(new WindowAdapter(  ) {
      public void windowClosing(WindowEvent e) { System.exit(0); }
    });
    f.setSize(400, 75);
    f.setLocation(200, 200);
    Flow flow = new Flow(  );
    f.setContentPane(flow);
    f.setVisible(true);
  }
}