使用HashTable构造树

package _13;

import java.util.Hashtable;

import javax.swing.JFrame;

import javax.swing.JScrollPane;

import javax.swing.JTree;

public class HashConstructTree extends JFrame {

public HashConstructTree() {

String[] s1 = {"A", "B", "C"};

String[] s2 = {"a", "b", "c"};

Hashtable<String, String[]> hashtable = new Hashtable<>();

hashtable.put("大写字母", s1);

hashtable.put("小写字母", s2);

JTree tree = new JTree(hashtable);

// 滚动面板相关代码

JScrollPane scrollPane = new JScrollPane();

scrollPane.setViewportView(tree); // 将树形组件放入滚动面板的视口

add(scrollPane); // 将滚动面板添加到窗口

}

public static void main(String[] args) {

HashConstructTree frame = new HashConstructTree();

frame.setTitle("HashConstructTree");

frame.setSize(300, 300);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setVisible(true);

}

}