Java如何獲取本地電腦的IP地址和主機名？

在Java編程中，如何獲取本地電腦的IP地址和主機名？

以下示例顯示如何使用InetAddress類的getLocalAddress()方法獲取系統的本地IP地址和主機名。

package com.zaixian;

import java.net.InetAddress;

public class GetLocalIPAddress {
    public static void main(String[] args) throws Exception {
        InetAddress addr = InetAddress.getLocalHost();
        System.out.println("Local HostAddress: " + addr.getHostAddress());
        String hostname = addr.getHostName();
        System.out.println("Local host name: " + hostname);
    }
}

上述代碼示例將產生以下結果 -

Local HostAddress: 192.168.1.50
Local host name: YB-PC