Java ServerSocket toString() method

The toString() method of Java ServerSocket class returns the implementation port of this socket as a String.

Syntax

Parameter

Overrides

The toString() method in class Object

Example 1

importjava.io.IOException;
import java.net.ServerSocket;
public class JavaServerSocketToStringExample1  {
public static void main(String[] args) throws IOException {
ServerSocketserverSocket = new ServerSocket();
//toString() method returns the address and port of this socket as a String.
        //if the socket is not bounded, it returns unbounded
System.out.println(serverSocket.toString());
    }
}

Output:

ServerSocket[unbound]

Example 2

import java.io.IOException;
import java.net.*;
public class JavaServerSocketToStringExample2  {
public static void main(String[] args) throws IOException {
ServerSocketserverSocket = new ServerSocket();
InetAddressinetAddress=InetAddress.getByName("localhost");
intiport=1085;
//calling the constructor of the SocketAddress class
SocketAddresssocketAddress=new InetSocketAddress(inetAddress, iport);
//binding the sever socket with the inetAddress and port number
serverSocket.bind(socketAddress);
//toString() method returns the address and port of this socket as a String.
        //if the socket is not bounded, it returns unbounded
System.out.println(serverSocket.toString());
    }
}

Output:

ServerSocket[addr=localhost/127.0.0.1,localport=1085]

Example 3

import java.io.IOException;
import java.net.*;
public class JavaServerSocketToStringExample3  {
public static void main(String[] args) throws IOException {
ServerSocketserverSocket = new ServerSocket();
InetAddressinetAddress=InetAddress.getByName("localhost");
//the port should be greater or equal to 0, else it will throw an error
intiport=-1085;
//calling the constructor of the SocketAddress class
SocketAddresssocketAddress=new InetSocketAddress(inetAddress, iport);
//binding the sever socket with the inetAddress and port number
serverSocket.bind(socketAddress);
//toString() method returns the address and port of this socket as a String.
        //if the socket is not bounded, it returns unbounded
System.out.println(serverSocket.toString());
    }
}

Output:

Exception in thread "main" java.lang.IllegalArgumentException: port out of range:-1085
	atjava.net.InetSocketAddress.checkPort(InetSocketAddress.java:143)
	atjava.net.InetSocketAddress.(InetSocketAddress.java:188)
	at com.javaTpoint.JavaServerSocketToStringExample3.main(JavaServerSocketToStringExample3.java:12)

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