abstract class Parent{
abstract void age();
}
abstract class Child extends Parent{
abstract void age();
}
class Child1 extends Child{
void age(){
System.out.println("age 22");
}
public static void main(String args[]){
Parent obj = new Child1();
obj.age();
}
}
age 22
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First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.