tree_reftest.java

CMM编译器词法分析及语法分析代码

package try_sw;
import java.io.*;
import java.util.*;
import   java.awt.Dimension;
import  java.awt.Color;

import javax.swing.JButton;
import  javax.swing.JFrame;
import  javax.swing.JPanel;
import  javax.swing.JScrollPane;
import  javax.swing.JTree;
import  javax.swing.BoxLayout;
import  javax.swing.tree.TreePath;
import  javax.swing.tree.DefaultMutableTreeNode;
import  javax.swing.tree.DefaultTreeModel;

public class Tree_Reftest {

	/**
	 * @param args
	 */
	
	static String getp(DefaultMutableTreeNode dm ){
		
		DefaultMutableTreeNode tm = (DefaultMutableTreeNode) dm.getParent();
		DefaultMutableTreeNode tm1= (DefaultMutableTreeNode) tm.getParent();
		
		return tm1.toString();
		
		
		
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		DefaultMutableTreeNode nod1 = new DefaultMutableTreeNode("nod1",true);
		DefaultMutableTreeNode nod2 = new DefaultMutableTreeNode("nod2",true);
		DefaultMutableTreeNode nod3 = new DefaultMutableTreeNode("nod3",true);
        
		nod1.add(nod2);
		nod2.add(nod3);
		
		System.out.println(getp(nod3));
		
		//yes they are passing reference
		
	}

}