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SCJP Module-3 Question-3
Posted on: July 9, 2010 at 12:00 AM
The given sample program test your knowledge of Inner and Outer class in Java and their access restrictions.

Given a sample code:

class OuterClass {
private int x = 2;

OuterClass() {
outerMethod();
}

public static class InnerClass {
private int x = 1;

public void innerMethod() {
System.out.println("inner x is " + x);
}
}

public void outerMethod() {
System.out.println("outer x is " + x);
}
}

public class Test {
public static void main(String args[]) {
OuterClass o = new OuterClass();
o.outerMethod();
OuterClass.InnerClass i = new OuterClass.InnerClass();
i.innerMethod();
}
}

What will be the result of above code ?

(1)   outer x is 2
        outer x is 2
        inner x is 1

(2)    outer x is 1
         inner x is 2
         inner x is 2

(3)    inner x is 2
        outer x is 2
         inner x is 1

(4)    inner x is 2
        outer x is 2
        outer x is 1

Answer:

(1)

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