Update

src/Network_communication/Client.java

+package Network_communication;
+
+// !/usr/bin/env jdk1.8
+// encoding:utf-8
+//@software:IntelliJ IDEA
+//@pack:Network_communication
+//@user:彭友聪
+//@date:2019/07/19
+//@time:下午 12:08
+//@project:IDEA_JAVA
+//@file:Client.java
+//Author:御承扬
+//email:2923616405@qq.com
+
+import java.io.*;
+import java.net.*;
+import java.nio.charset.StandardCharsets;
+
+
+public class Client {
+    public Client() {
+    }
+
+    public static void main(String[] args) throws IOException {
+        // 创建客户端套接字，通过指定端口连接服务器，连接本地服务器可以用本地回送 IP
+        Socket client = new Socket("127.0.0.1",1100);
+        System.out.println( "连接服务器成功！" );
+        InputStream in = client.getInputStream();
+        OutputStream out = client.getOutputStream();
+        try {
+            out.write( "我是客户端，欢迎光临！".getBytes( StandardCharsets.UTF_8 ) );
+            byte[] bt = new byte[1024];
+            int len = in.read( bt );
+            String data = new String(bt,0,len);
+            System.out.println( "来自服务器的消息："+data );
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                client.shutdownInput();
+                client.shutdownOutput();
+                client.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+}

src/Network_communication/IpToName.java

@@ -24,12 +24,17 @@ public class IpToName {
 
     public static void main(String[] args) throws IOException {
         String IP;
+        String IP1 = "192.168.15.129";
         InetAddress host; // 创建 InetAddress 对象
+        InetAddress host1;
         try {
+            host1 = InetAddress.getByName( IP1 );
             host = InetAddress.getLocalHost(); // 实例化 InetAddress 对象，获取本机的 IP 地址相关信息
             String localName = host.getHostName(); // 获取本机名
             String localIp = host.getHostAddress();
+            String name = host1.getHostName(); // 获取虚拟机名
             System.out.println( "本机名:" + localName + ",本机 IP 地址：" + localIp );
+            System.out.println( "虚拟机 IP："+IP1+"的名称为："+name );
         } catch (UnknownHostException e) {
             e.printStackTrace();
         }

src/Network_communication/Server.java

+package Network_communication;
+
+// !/usr/bin/env jdk1.8
+// encoding:utf-8
+//@software:IntelliJ IDEA
+//@pack:Network_communication
+//@user:彭友聪
+//@date:2019/07/19
+//@time:上午 11:19
+//@project:IDEA_JAVA
+//@file:Server.java
+//Author:御承扬
+//email:2923616405@qq.com
+
+import java.io.*;
+import java.net.*;
+import java.nio.charset.Charset;
+
+
+public class Server {
+    public Server() {
+    }
+
+    public static void main(String[] args) throws IOException {
+        // 创建服务器对象，监听 1100 端口
+        ServerSocket server = new ServerSocket( 1100 );
+        System.out.println( "服务器启动成功，等待用户接入。。。。。" );
+        //等待用户接入，直到用户接入为止
+        Socket client = server.accept();
+    try {
+            // 等到接入客户端的 IP 地址
+            System.out.println( "有客户端接入，客户 IP："+client.getInetAddress() );
+            // 从客户端生成网络输入流，用于接收来自网络的数据
+            InputStream in = client.getInputStream();
+            // 从客户端生成输出流，用来把数据发送到网络
+            OutputStream out = client.getOutputStream();
+            byte[] bt = new byte[1024];
+            int len = in.read(bt);
+            String data = new String(bt,0,len);
+            System.out.println( "来自客户端的信息："+data );
+            //服务器发送数据
+            out.write("我是服务器，欢迎光临".getBytes( Charset.forName( "UTF-8" ) ));
+            out.flush();
+            client.shutdownInput();
+            client.shutdownOutput();
+
+        } catch (IOException e) {
+        e.printStackTrace();
+        } finally {
+         try{
+             // 关闭套接字
+            client.close();
+            } catch (IOException e) {
+            e.printStackTrace();
+            }
+         }
+    }
+}