package panelayout;import java.awt.*;import java.awt.event.*;import javax.swing.*;import com.borland.jbcl.layout.*;public class Frame1 extends JFrame {  JPanel contentPane;  PaneLayout paneLayout1 = new PaneLayout();  TextField textField1 = new TextField();  TextField textField2 = new TextField();  TextField textField3 = new TextField();  TextField textField4 = new TextField();  TextField textField5 = new TextField();  /**Construct the frame*/  public Frame1() {    enableEvents(AWTEvent.WINDOW_EVENT_MASK);    try {      jbInit();    }    catch(Exception e) {      e.printStackTrace();    }  }  /**Component initialization*/  private void jbInit() throws Exception  {    //setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));    contentPane = (JPanel) this.getContentPane();    textField1.setText("textField1");    contentPane.setLayout(paneLayout1);    this.setSize(new Dimension(275, 200));    this.setTitle("PaneLayout演示程序");    textField2.setText("textField2");    textField3.setText("textField3");    textField4.setText("textField4");    textField4.addActionListener(new java.awt.event.ActionListener() {      public void actionPerformed(ActionEvent e) {        textField4_actionPerformed(e);      }    });    textField5.setText("textField5");    contentPane.add(textField1,         new PaneConstraints("textField1", "textField1", PaneConstraints.ROOT, 0.5f));    contentPane.add(textField2,         new PaneConstraints("textField2", "textField1", PaneConstraints.BOTTOM, 0.48000002f));    contentPane.add(textField3,          new PaneConstraints("textField3", "textField1", PaneConstraints.RIGHT, 0.51272726f));    contentPane.add(textField4,          new PaneConstraints("textField4", "textField3", PaneConstraints.BOTTOM, 0.45192307f));    contentPane.add(textField5,         new PaneConstraints("textField5", "textField4", PaneConstraints.RIGHT, 0.49618322f));  }  /**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);    }  }}