Java constructor question

Ricky91t

Hey all,

I've got another quick question.

On the program below, Say if I was instead using random ints and sometimes the same was returned, If I called the Constructor "new JavaExample( 10 );" in the addToArray method, would this then stop what it's doing and return to the start or would it kind of run two instances of the program?

If it runs two instances how could I prevent this?

Thank you!

public class JavaExample {
private String[] myExampleArray;
private JavaExample runIt;
public static void main(String[] args) {
JavaExample runIt = new JavaExample(10);
}
public JavaExample(int arraySize) {
    myExampleArray = new String[arraySize];
    fillTheArray();
    System.out.println("Completed!");
}
public void fillTheArray() {
    addToArray(7, "testing");//The int would actually be random
    addToArray(5, "testing");//The int would actually be random
    addToArray(7, "testing");//The int would actually be random
}
public void addToArray(int index, String text) {
   if ( myExampleArray[index] != null ) {
      JavaExample runIt = new JavaExample( 10 );
      System.out.println("something clashed");
   } else {
      myExampleArray[index] = text;
   }
}
}

Mr. Loverman

I've read your question a few times but cannot understand what you're asking.

But I can say this:

You are not using threads so there will never be two things happening in parallel.

Ricky91t

Mr. Loverman wrote: »

I've read your question a few times but cannot understand what you're asking.

But I can say this:

You are not using threads so there will never be two things happening in parallel.

Thanks,

Well the program I'm making is for hashing, And if there's a collision which could happen halfway through the constructor code I reconstruct it, but then at the end I get a statment printed out more than once which makes it seems that the other instances of the constructor still run?

amen

I'm not really sure what you are asking eitgher

You can an application A that contains class B.

If you call Application A multiple times with calls to class B(defined in application A and not external) then each application should only see the class B that it created.

On the other hand if you have application A (one instance) and you create multiple instances of class b then you can share data across the classes or not depending on how you declare you class. Not a Java head but I'd imagine you could look at static etc.

Ricky91t

Sorry I may not of been clear! I resolved this anyway with the System.exit(0); code, and it no longer re-runs the application several times.