import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.util.*;/**
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* pTitle: 分割面板/p
* pDescription: 演示将面板分割成左右两部分/p
* pCopyright: Copyright (c) 2003/p
* pFilename:SplitPaneDemo.java /p
* @version 1.0
*/
public class SplitPaneDemo implements ListSelectionListener {
private String[] imageNames={"Bird.gif","Cat.gif","Dog.gif","Pig.gif"};
private JLabel picture;
private JList list;
private JSplitPane splitPane;
/**
*br方法说明:构造器,定义了所有要使用的构件
*br输入参数:
*br返回类型:
*/
public SplitPaneDemo() {
//创建一个图像名称的列表,设置为单选方式
list = new JList(imageNames);
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
list.setSelectedIndex(0);
list.addListSelectionListener(this);
JScrollPane listScrollPane = new JScrollPane(list);//获取默认的图片
ImageIcon firstImage = createImageIcon("images/" +
(String)imageNames[0]);
if (firstImage != null) {
picture = new JLabel(firstImage);
picture.setPreferredSize(new Dimension(firstImage.getIconWidth(),
firstImage.getIconHeight()));
} else {
picture = new JLabel((String)imageNames[0]);
}
JScrollPane pictureScrollPane = new JScrollPane(picture);//创建一个水平分割的面板,定义了两个面板的名字。
splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,
listScrollPane, pictureScrollPane);
splitPane.setOneTouchExpandable(true);
splitPane.setDividerLocation(150);//定义面板的最小尺寸
Dimension minimumSize = new Dimension(100, 50);
listScrollPane.setMinimumSize(minimumSize);
pictureScrollPane.setMinimumSize(minimumSize);//定义初始尺寸
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splitPane.setPreferredSize(new Dimension(400, 200));
}
/**
*br方法说明:获得这个分割的面板
*br输入参数:
*br返回类型:JSplitPane 对象
*/
public JSplitPane getSplitPane() {
return splitPane;
}
/**
*br方法说明:列表监听事件处理
*br输入参数:ListSelectionEvent e 列表选择事件
*br返回类型:
*/
public void valueChanged(ListSelectionEvent e) {
if (e.getValueIsAdjusting())
return;JList theList = (JList)e.getSource();
if (theList.isSelectionEmpty()) {
picture.setIcon(null);
picture.setText(null);
} else {
int index = theList.getSelectedIndex();
ImageIcon newImage = createImageIcon("images/" +
(String)imageNames[index]);
picture.setIcon(newImage);
if (newImage != null) {
picture.setText(null);
picture.setPreferredSize(new Dimension(newImage.getIconWidth(),
newImage.getIconHeight() ));
} else {
picture.setText("Image not found: "
+ (String)imageNames[index]);
}
picture.revalidate();
}
}
/**
*br方法说明:根据路径获取图形对象
*br输入参数:String path 图片路径
*br返回类型:ImageIcon 图片对象
*/
protected static ImageIcon createImageIcon(String path) {
java.net.URL imgURL = SplitPaneDemo.class.getResource(path);
if (imgURL != null) {
return new ImageIcon(imgURL);
} else {
System.err.println("Couldn´t find file: " + path);
return null;
}
}
/**
*br方法说明:主方法
*br输入参数:
*br返回类型:
*/
public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);//定义窗体
JFrame frame = new JFrame("SplitPaneDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SplitPaneDemo splitPaneDemo = new SplitPaneDemo();
frame.getContentPane().add(splitPaneDemo.getSplitPane());//显示窗体
frame.pack();
frame.setVisible(true);
}
}
[JAVA100例]022、分割一个面板
在这个颜值当道,屌丝闪边的时代,拼不过颜值拼内涵,只有知识丰富才能提升一个人的内在气质和修养,所谓人丑就要多学习,今天图老师给大家分享[JAVA100例]022、分割一个面板,希望可以对大家能有小小的帮助。