Thread: how to restart my program

Hi
i want to restart my program(a network simulator) after i check if the network has died in my program , so tha i dont have to hit the run button on eclipse. How can i do this

I have this code which one of my classmate is using ,but i dont know how should i use it ,it has .jar file in the syntax




try{

Runtime.getRuntime().exec("java -jar /Users/xyz/Desktop/Test/file.jar");
System.exit(0);
}
catch (Exception e){}

}

First of all you people have two different addresses,and i dint know both of them point to one forum ,its my fault!
secondly atleast reply to a post,someone who needs your assistance is not here to hear you lame comments that its a duplicate/cross post..
i think the main goal of a forum should be to help solving problems ,instead of caring about these lil issues

jack_nutt,

Can i please bring your attention to a particular section of the forum guidance post,

3b. Please post links to the sites you have cross-posted your question(s) on. This allows our members to join in on the discussion without having to ask the same questions over again. See The Problems With Cross Posting for greater details on this subject.

Please note that we have rules against cross-posting, as do many other forums. Not only are you breaking ours, but you are breaking others.

java-forums.org is not a memebr of our family, just many of our memebrs choose to be active members on multiple forums, so that they can provide solutions to more people, because its what they do.

Please take the time to read the post aboutthe problems with cross posting as linked to in the above qoutation. When you do this, you will realise why it is in your interest to abide by these rules.

Junky, is a very useful member of the community and provides help to many people.

The main goal of the forum is to provide solutions to people as well as a friendly environment, but people who end up wasting time posting replies to threads already solved on other forums cannot help many people.


Regards,
Chris

try

setVisible(false);
 
// if statement to see network status..
// if the net status is true
 
...
new netProgram();
setVisible(true);
...

I'm asuming in this example that your class name is netProgram.. which would give your first method a name of

public netProgram(){
 
}

Also I'd use a timer.. So make the program generate this code every say few mins.. to stop the processing usage..

But this is just a quick way of doing it

Originally Posted by jack_nutt

First of all you people have two different addresses,and i dint know both of them point to one forum ,its my fault!
secondly atleast reply to a post,someone who needs your assistance is not here to hear you lame comments that its a duplicate/cross post..
i think the main goal of a forum should be to help solving problems ,instead of caring about these lil issues

Perhaps this is nitpicky, but it also assists those trying to help you, if you take the time to utilize the SHIFT key for capitalization and SPACE key for spaces, as well as using full
English words rather than slang abbreviations. Not only does this promote a sense of professionalism with your issue, but it simply allows people to understand what you are
saying in a much simpler and faster fashion, rather than spending time that could be used on solving this issue on deciphering a mess of lazy typing.

Bad English is one thing, as those who aren't fluent simply can't help it, but lazy typing is just sort of rude when asking people to help solve a problem.

Originally Posted by bgroenks96

Now to reply to the actual post:

There are two perfectly good methods to doing this. First, you can try what another person has already mentioned, which is restarting via a console command:

Runtime.getRuntime().exec(System.getProperty("user.dir")+[program file name here]);    //Starts a new JVM running the same program.
System.exit(0);   //Terminates the currently running JVM

What should be the "+[program file name here]" , should it be my java file name or the project folder name ??

can you give an example as how to put the code for a specific file??

thanks

import java.io.*;
public class a {
 
 
		public static void main(String[] args) {
 
 
			for(int i=0;i<50;i++)
		{
 
 
			  try {
 
				  BufferedWriter meanValue = new BufferedWriter(new FileWriter(new File("filename.txt"), true));
                  meanValue.write(""+i);
                  meanValue.newLine();
                  meanValue.close();
 
 
 
          } catch (Exception e) {
          }
 
 
			System.out.println(i);
			if(i>10){
 
				try{
 
                    Runtime.getRuntime().exec("C:\\Users\\abc\\workspace\\crejrfiles\\lib\\jarf.jar");
                    System.exit(0);
                    }
                    catch (Exception e){}
 
                    }
 
			}
			}	}

I have created a .jar file at location C:\Users\abc\workspace\crejrfiles\lib\jarf.jar ,using eclipse

But the program runs only once ,how can i make it to keep on restarting so that i keep on logging values in my text file.. what paramaters should i give to
Runtime.getRuntime().exec (...............)

I tried this in Windows

  Runtime.getRuntime().exec("java -jar C:\\Users\\abc\\workspace\\crejrfiles\\lib\\jarf.jar");

But its not working ...
my jarfile is at location "C:\\Users\\abc\\workspace\\crejrfiles\\lib\\jarf. jar"

what should i do?

By your description i tried the command

 
Runtime.getRuntime().exec("C:\\Program Files\\Java\\jre6\\bin\\java -jar C:\\Users\\abc\\workspace\\crejrfiles\\lib\\jarf.jar");

As my jave files are in folder C:\Program Files\Java\jre6\bin


Not working means
i want my program(process) to keep on restarting and running in backhand ...I am actually logging a file in my program and i want the simulation to run automatically everytime.

Originally Posted by jack_nutt

By your description i tried the command

 
Runtime.getRuntime().exec("C:\\Program Files\\Java\\jre6\\bin\\java -jar C:\\Users\\abc\\workspace\\crejrfiles\\lib\\jarf.jar");

As my jave files are in folder C:\Program Files\Java\jre6\bin


Not working means
i want my program(process) to keep on restarting and running in backhand ...I am actually logging a file in my program and i want the simulation to run automatically everytime.

Is the JAR launching properly? If the JAR you are launching is the same one executing this command, it should continuously keep spawning a new process with each execution. Just be careful to set that up correctly. You don't want to inadvertently fork bomb your computer...

No i think my jar file is not working, when ever i click on it ,it gives an error
"invalid or corrupt jar file C:\Users\abc\workspace\project\lib\jarf.jar "

how can i do it in Eclipse? what options do i need to consider while exporting this jar file
how can i get rid of this error??