JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to get IP address of a Host in Java?


Description:

You can get IP address of any host by using InetAddress class. By calling getByName() method with host name as parameter, it returns InetAddress object. On this object you can call getHostAddress() method to get the IP address of the given host.


Code:
package com.myjava.ip;

import java.net.InetAddress;
import java.net.UnknownHostException;

public class MyIpByHost {

    public static void main(String a[]){
    
        try {
            InetAddress host = InetAddress.getByName("www.java2novice.com");
            System.out.println(host.getHostAddress());
        } catch (UnknownHostException ex) {
            ex.printStackTrace();
        }
    }
}
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Knowledge Centre
String Vs StringBuffer
We know that String is immutable object. We can not change the value of a String object once it is initiated. If we try to change the value of the existing String object then it creates new object rather than changing the value of the existing object. So incase, we are going to do more modificatios on String, then use StringBuffer. StringBuffer updates the existing objects value, rather creating new object.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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