splitpaneldemo.java

面板、菜单、工具栏

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

public class SplitPanelDemo extends JFrame {

  JPanel contentPane=new JPanel();
  JLabel jLabel1 = new JLabel();
  Border border1;
  Component component1;
  JSplitPane jSplitPane1 = new JSplitPane();
  JScrollPane ScrollImage = new JScrollPane();
  JLabel ImageLabel = new JLabel();
  JScrollPane ScrollText = new JScrollPane();
  JTextArea displayArea = new JTextArea();

  public SplitPanelDemo() {
    try {jbInit();} catch(Exception e) {}
  }
  public static void main(String[] args) {
    SplitPanelDemo frame = new SplitPanelDemo();
    frame.setVisible(true);
  }
  //当窗口关闭时的处理代码
  protected void processWindowEvent(WindowEvent e) {
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }
  private void jbInit() throws Exception {
    //设置窗口的标题与大小
    setTitle("分隔条实例演示");
    setSize(new Dimension(400,300));

    //取得底层容器并将其布局设为BoxLayout
    contentPane=(JPanel)this.getContentPane();
    contentPane.setLayout(new BoxLayout(contentPane,BoxLayout.Y_AXIS));

    //设置标签的位置与标题
    jLabel1.setAlignmentX((float) 0.5);
    jLabel1.setText("分隔框");

    //设置分隔框的位置,边框,分隔条的大小及位置
    jSplitPane1.setAlignmentX((float) 0.5);
    jSplitPane1.setBorder(BorderFactory.createEtchedBorder());
    jSplitPane1.setDividerSize(20);
    jSplitPane1.setDividerLocation(100);

    //定义图片并将其加入标签中
    ImageIcon dag=new ImageIcon("dog.jpg");
    ImageLabel.setIcon(dag);
    //插入对图片的文字说明
    displayArea.setText("右边是一条可爱\n的狗.");
    //将图片及文字框加入滚动框中
    ScrollText.getViewport().add(displayArea, null);
    ScrollImage.getViewport().add(ImageLabel, null);
    //分别在分隔框的右边及左边加入图片及文字框
    jSplitPane1.add(ScrollImage, JSplitPane.RIGHT);
    jSplitPane1.add(ScrollText, JSplitPane.LEFT);

    //加入空白边框
    border1 = BorderFactory.createEmptyBorder(10,10,10,10);
    contentPane.setBorder(border1);
    //加入标签与垂直分隔条
    contentPane.add(jLabel1, null);
    component1 = Box.createVerticalStrut(17);
    contentPane.add(component1, null);
    //加入分隔框
    contentPane.add(jSplitPane1, null);
  }
}