JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to get my machine or local host IP address in Java?


Description:

Below example shows how to get IP address of a host or machine. You can get it by using InetAddress class. getLocalHost() method returns the information about the host, and returns InetAddress object. If you call getHostAddress() method, you can get IP address of the host.


Code:
package com.myjava.ip;

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

public class MyIpAddress {

    public static void main(String a[]){
    
        try {
            InetAddress ipAddr = InetAddress.getLocalHost();
            System.out.println(ipAddr.getHostAddress());
        } catch (UnknownHostException ex) {
            ex.printStackTrace();
        }
    }
}
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Knowledge Centre
What is fail-fast in java?
A fail-fast system is nothing but immediately report any failure that is likely to lead to failure. When a problem occurs, a fail-fast system fails immediately. In Java, we can find this behavior with iterators. Incase, you have called iterator on a collection object, and another thread tries to modify the collection object, then concurrent modification exception will be thrown. This is called fail-fast.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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