Java MulticastSocket setTimeToLive(int ttl) Method

setTimeToLive(int ttl) is the method of MulticastSocket class. This method is used to set the default time-to-live for the multicast packets which are sent out on the socket in order to control the scope of the multicasts. The range 0 <= ttl <= 255 or an IllegalArgumentException will be thrown.

Syntax

Parameter

ttl - it is the time-to-live

Throw

IOException - this exception occurs while getting the default time-to-live value.

Example 1

import java.io.IOException; 
import java.net.MulticastSocket; 
public class JavaMulticastSocketsetTimeToLiveExample1 
{ 
    public static void main(String[] args) throws IOException  
    { 
        MulticastSocket ms1 = new MulticastSocket(); 
        //setTimeToLive() method
        ms1.setTimeToLive(20); 
        System.out.println("Time to Live : " +  ms1.getTimeToLive()); 
    } 
}

Test it Now

Output:

Time to Live : 20

Example 2

import java.io.IOException; 
import java.net.MulticastSocket; 
public class JavaMulticastSocketsetTimeToLiveExample2 
{ 
    public static void main(String[] args) throws IOException  
    { 
        MulticastSocket ms1 = new MulticastSocket(); 
        //setTimeToLive() method
        ms1.setTimeToLive(40); 
        System.out.println("Time to Live : " +  ms1.getTimeToLive());
    } 
}

Test it Now

Output: