0312 --- JAVA顯示IP

1. 儲存下列程式碼 TestInet1.txt

import java.net.*;

public class TestInet1 {
  public static void main(String argv[])
  {
    try {
      InetAddress myip = InetAddress.getLocalHost();

＿      System.out.println(myip.getHostName());
      System.out.println(myip.getHostAddress());
    } catch (UnknownHostException e) {
      System.out.println("Error: unable to resolve localhost");
    }
  }
}

2.更改副檔名為TestInet1.java
3..開啟 cmd
4.輸入java
5.javac
6.cd c:\myjava
7.dir
8.javac TestInet1.java
9.java TestInet1

10.結果

11.輸入ipconfig