GUI小程序【JTree】

只对初学者或许有用

import java.awt.*;

import javax.swing.*;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.JFrame;


public class Mytree extends JFrame{
private DefaultMutableTreeNode root,red,green,blue;
private JTree jtree1;

private JPanel jpanel1;
// private JLabel jlabel;

private JFrame frame;

Mytree(){

super();


initilize();

}

public void initilize(){
frame=new JFrame("mytree");

root=new DefaultMutableTreeNode("Color");
red=new DefaultMutableTreeNode("red");
blue=new DefaultMutableTreeNode("green");
green=new DefaultMutableTreeNode("green");

root.add(red);
root.add(blue);
root.add(green);

jtree1=new JTree(root);


// jlabel=new JLabel("123456789",JLabel.CENTER);

jpanel1=new JPanel();



JSplitPane jsplitpane=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
jtree1,jpanel1);
jsplitpane.setOneTouchExpandable(true);
jsplitpane.setMinimumSize(new Dimension(100,50));

frame.getContentPane().add(jsplitpane);





frame.setSize(600,500);
frame.setLocation(50,50);
frame.setVisible(true);
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);






}

public static void main(String[] args){
new Mytree();
}





}