网络编程学习（java.io.net）

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;

public class TestNet {
public void client(){
Socket socket = null;
OutputStream outputStream = null;
try{
socket = new Socket(InetAddress.getByName("127.0.0.1"),8088);
outputStream = socket.getOutputStream();
outputStream.write("nihao!".getBytes());
}catch(IOException e) {
e.printStackTrace();
}finally {
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}

try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}


public void servers() {
ServerSocket serverSocket = null;
InputStream inputStream = null;
Socket socket = null;
try {
serverSocket = new ServerSocket(8088);
socket = serverSocket.accept();
inputStream = socket.getInputStream();
byte[] b = new byte[20];
int len;
while((len = inputStream.read(b)) != -1){
String string = new String(b,0,len);
System.out.println(string);
}
} catch (IOException e) {
e.printStackTrace();
}finally {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
try {
serverSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}