JAVA Overriding and Overloading
What will be printed after executing following program code?class Base{int value = 0; Base(){ addValue(); } void addValue(){ value += 10; } int getValue(){ return value; }}class Derived extends Base{Derived(){addValue();}void addValue(){value += 20;}}public class Test{public static void main(String[] args){Base b = new Derived();System.out.println(b.getValue());}}

20
None of these
30
10
40

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JAVA Overriding and Overloading
what is the result of the following piece of code:public class Person{ public void talk(){ System.out.print("I am a Person"); }}public class Student extends Person{ public void talk(){ System.out.print("I am a Student"); }}public class Test{ public static void main(String args[]){ Person p = new Student(); p.talk(); }}

I am a Person I am a Student
I am a Student I am a Person
I am a Student
I am a Person

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JAVA Overriding and Overloading
What will be the output?interface A{public void method1();}class One implements A{public void method1(){System.out.println("Class One method1");}}class Two extends One{public void method1(){System.out.println("Class Two method1");}}public class Test extends Two{public static void main(String[] args){A a = new Two();a.method1();}}

Class One method1
Compilation Error
Class Two method1
Nothing will be printed

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