codehub27: Project CRaC implementation in java

CRaC – Coordinated Restore at Checkpoint). It is an OpenJDK project which helps to check the java applications in a particular point and restore it.

How it works??

Just run Java Virtual Machine with application. CRaC makes the user to take snapshot and store its state.

How to create a java application with CRaC:

First set the environment: check the Java Virtual Machine whether it suitable for CRaC.
Write a class Main24 with main() function.
Print a message “Let us start the application”. Using try, catch block make a thread to sleep for some time.
Again, print a message that “initial setup is completed.let us wait for checkpoints” and create a check point.
At last, print “ let us continue the work”

Program:

public class Main24 {

public static void main(String[] args) {

System.out.println("Let us start the Application....");

try {

Thread.sleep(200);

} catch (InterruptedException e) {

e.printStackTrace();

}

System.out.println("Initial setup is completed.Let us Wait for checkpoints...");

// Simulate a long-running operation

while (true) {

try {

Thread.sleep(500);

} catch (InterruptedException e) {

e.printStackTrace();

}

System.out.println("let us Continue the work...");

}

Output:

C:\raji\blog>javac Main24.java

C:\raji\blog>java Main24

Let us start the Application....

Initial setup is completed.Let us Wait for checkpoints...

let us Continue the work...

This is the way of creating a simple CRaC application in java programming.

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