Question about constructors and inheritance

Hi I have three classes Cal, Cal2 and Inheritance5
Cal is parent, Cal2 extends Cal and Inheritance basically tries to find the total.

Problem: When I try to compile and execute my Inheritance5.java program it prints 0 instead of 12 why is that and is there a way for me to execute it without using super statement or adding another constructor in child class that accepts 2 ints? Please help.

public class Cal
{
private int base, height, total;

Cal(){}
Cal(int b, int h)
{
base = b;
height = h;
}
public void setHeight(int num)
{
height = num;
}
public void setBase(int num)
{
base = num;
}
public void getTotal()
{
System.out.println("Area of the rectangle is " + (base*height));
}
}

=====================================================================
public class Cal2 extends Cal{

}

======================================================================
public class Inheritance5{
public static void main(String[] args){
Cal2 areaRectangle = new Cal2(4,3);
areaRectangle.getTotal();
}
}

Are you sure that compiles?

Yes it compiles just fine. These classes are in 3 different java files

The Inheritance5 class you posted won't compile because there is no constructor in Cal2 that matches int,int.

for some reason it is compiling. but when executing it displays 0 as a value

If it compiles, you must have a different Cal2 class than what you posted.

As Keith pointed out you can not have the instance of Cal2 accepting 2 ints as parameter with out the constructor.

BTW why you do not want to have the constructor in Cal2?