用java取得本机的ip和机器名

//iplabel.java

import java.net.*;

import java.awt.*;

import javax.swing.*;

public class iplabel

{

JFrame frame;

JLabel label1,label2;

JPanel panel;

String ip,address;

public void getip()

{

try

{

InetAddress addr = InetAddress.getLocalHost();

ip=addr.getHostAddress().toString();//获得本机IP

address=addr.getHostName().toString();//获得本机名称

//System.out.println("addr=:"+String.valueOf(addr));

}

catch(Exception e)

{

System.out.println("Bad IP Address!"+e);

}

}

public void showframe()

{

frame=new JFrame("my ip");

label1=new JLabel("this my ip");

label1.setText(ip);

label2=new JLabel("this my address");

label2.setText(address);

panel=new JPanel();

panel.add(label1);

panel.add(label2);

frame.getContentPane().add(panel);

frame.setSize(400,300);

frame.setVisible(true);

}

public static void main(String agrs[])

{

iplabel myip=new iplabel();

myip.getip();

myip.showframe();

}

}