1. 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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  • By: guest on 02 Jun 2017 01.25 am
    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: public Sub(String text) { super(text); // this must be the first line constructor i = 2; }
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