What will be the output of the program? class Super
{
public int i = 0;

public Super(String text) /* Line 4 */
{
i = 1;
}
}

class Sub extends Super
{
public Sub(String text)
{
i = 2;
}

public…

Question

What will be the output of the program? class Super
{ 
    public int i = 0;

public Super(String text) /* Line 4 */
    {
        i = 1; 
    } 
}

class Sub extends Super
{
    public Sub(String text)
    {
        i = 2; 
    }

public…

Accepted Answer

A default no-args constructor is not created because there is a constructor supplied that has an argument, line 4. Therefore the sub-class constructor must explicitly make a call to the super class constructor:

What will be the output of the program? class Super { public int i = 0; public Super(String text) /* Line 4 */ { i = 1; } } class Sub extends Super { public Sub(String text) { i = 2; } public static void main(String args[]) { Sub sub = new Sub("Hello"); System.out.println(sub.i); } }

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