package work;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import javax.swing.*;
public class ReadMAC {
	String line="";
	String mac="";
	JFrame jf = new JFrame("獲取本機MAC地址");
	JButton jb1 = new JButton("獲取");
	JButton jb2 = new JButton("清除");
	JLabel jt = new JLabel("");
	public ReadMAC(){ 
		//界面及事情
		jf.setLayout(new GridLayout(2,1));
    	jf.setBounds(100, 100, 400,150);
    	jf.setBackground(Color.GRAY);
    	jf.setResizable(false);
    	jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    	jf.add(jb1);
    	jf.add(jb2);
    	jf.add(jt);
    	jf.setVisible(true);
        jb1.addActionListener(new ActionListener(){
        	public void actionPerformed(ActionEvent e){
        		get();
        		jt.setText("本機MAC地址："+mac);
        	}
        });
        jb2.addActionListener(new ActionListener(){
        	public void actionPerformed(ActionEvent e){
        		get();
        		jt.setText("");
        	}
        });

	}
	
	//獲取本機MAC地址的方法
    void get(){    
	try{
			  Process process = Runtime.getRuntime().exec("cmd /c ipconfig /all");//獲取一個運行的進程
				BufferedReader buff= new BufferedReader(new InputStreamReader(process.getInputStream()));
				while ( (line = buff.readLine())!= null ){
					if(line.indexOf("Physical Address. . . . . . . . . :") != -1){
						if(line.indexOf(":") != -1){
							mac = line.substring(44);
						}
						
				}
		  }
				
		  }
		  catch(Exception e){
			  System.out.println(e.getMessage());
			  System.out.println(e.equals(e));
			  
		  }	
    }
	public static void main(String args[]){
		new ReadMAC();
	}
}