Process类 destroy() 方法为什么不起作用

[yilinhust]

上面这个程序的process.destroy()方法不起作用，但下面的却可以
请问这是怎么回事？

package demo;

import java.util.Properties;
import java.io.IOException;
import java.lang.InterruptedException;

public class OpenBrowser{
	static Process process = null;
	
	public static void main(String[] args) throws Exception{
		
		Properties properties = System.getProperties();
		String osName = properties.getProperty("os.name");
		
		System.out.println (osName);
		
		if (osName.indexOf("Linux") != -1) {
			process = Runtime.getRuntime().exec("htmlview");
		} else if (osName.indexOf("Windows") != -1){
			process = Runtime.getRuntime().exec("explorer http://www.163.com");
//			p = Runtime.getRuntime().exec("C:/Program Files/Internet Explorer/IEXPLORE.EXE http://www.sina.com");
		} else {
			throw new RuntimeException("Unknown OS.");
		}
		
		if(process != null){
			new Thread(new Runnable(){
				public void run() {
			    	try {
			        	Thread.sleep(5000);
			    	} catch (InterruptedException e) {}
			    	
			    	process.destroy();
			    	
			    	System.out.println ("进程被销毁！");
				}
			}).start(); 
			
			int exitcode=process.waitFor();
			System.out.println("finish:"+exitcode);
		}
	}
}

package demo;

import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;

import javax.swing.*;

public class OpenIE extends JFrame {
	Process p = null;

	public OpenIE() {
		JButton button = new JButton("Open");
		JButton buttonClose = new JButton("Close");

		button.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e) {
				try {
					String[] strs = {"C:\\Program Files\\Internet Explorer\\iexplore.exe", 
							"http://dzh.mop.com/topic/readSub_5661107_0_0.html"};
					p = Runtime.getRuntime().exec(strs);
				} catch (IOException e1) {
					e1.printStackTrace();
				}
			}
		});

		buttonClose.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e) {
				p.destroy();
			}
		});

		Container c = this.getContentPane();
		c.setLayout(new BoxLayout(c, BoxLayout.Y_AXIS));
		this.getContentPane().add(button);
		this.getContentPane().add(buttonClose);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setBounds(200, 200, 200, 200);
	}


	public static void main(String[] args) {
		new OpenIE().setVisible(true);
	}

}

[tanlingyun]

问题应该出在process = Runtime.getRuntime().exec("explorer http://www.163.com");
把它改成process = Runtime.getRuntime().exec("C:/Program Files/Internet Explorer/IEXPLORE.EXE http://www.sina.com");就可以成功销毁了，我估计是直接写explorer，启动的时候可以找到它的路径，但销毁时去销毁不了。