Constructor inheritance

[jeff mutonho]

Consider the two classes:

public abstract class A {
private boolean booleanVal = false;

public A() {
super();
}

public A(boolean val) {
this();
booleanVal = val;
}
}

public class B extends A {
public B() throws Exception{
super(true);//set booleanVal in superclass to true
init();
}
}

Calling super(true) in B should set booleanVal to true.When I run this , booleanVal is never set yo "true".Why is this?

[Ramender Mall]

Hi Jeff,

I tried your code, (but with new names and all)..

 
abstract class aClass
{
    private boolean b = false;
 
    aClass()
    {
        super();
    }
 
    aClass(boolean bool)
    {
        this();
        b = bool;
    }
 
    public boolean retBool()
    {
        return b;
    }
}
 

 
public class showFlaw extends aClass
{
    public showFlaw()
    {
        super(true);
    }
    
    public static void main(String[] a)
    {
        showFlaw SF = new showFlaw();
        System.out.println("Boolean val: "+SF.retBool());
    }
}
 

 

It ran fine....See if there is any big difference between both the programs...

In my little program depending on the boolean value passed to super,

public showFlaw()
{
super(true);
}

, the println was responding accordingly...

Ramy..

[Jim Yingst]

Jeff, please don't post the same question in more than one forum here. It wastes people's time to reply withont seeing what others have already said in a neighboring forum. We end up with two disjointed conversations with needless duplication. I'm closing this thread; followups can go here since it has more replies. Ramy, you may want to repost your reply there too if you don't mind. Thanks.