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Variable value passing

Ranch Hand

Joined: Feb 26, 2005
Posts: 35
I am having issue with passing variable value from one class to another.
I have class A and Class B bot in same package.

package D
Class A {

private int j = 0; //I have getters and setters for this variable

public void doSomething(){


Class B{
A a = new A();
int i = a.getJ();

System.out.println("value of j is "+i);


My problem is class A gets called first and j's value get incremented becomes 2. But when i am calling the getter value in i received is 0 (initial value of J).
Someone recomened since A does not know about method getJ in B i use request object to set value of j in B which i did but result is still same i am getting value as 0. I tried using request dispatchr but than also am not getting right value of J in A.

I know this is basic issue in java if anyone canhelp me i will be really grateful.
Pablo M�ller
Ranch Hand

Joined: Dec 12, 2006
Posts: 63

j++ and ++j both increment j even if they are not assigned. That's why you get j incremented by 2.

Regarding the other error you have.. is that your actual code.. I mean, is your class B exactly what you posted?

2B || !2B
It is sorta covered in the JavaRanch Style Guide.
subject: Variable value passing
It's not a secret anymore!