Which of these is correct way of inheriting class N by class M?

1.	Which of these is correct way of inheriting class N by class M?
A.	class M extends class N {}
B.	class M + class N {}
C.	class M inherits class N {}
D.	class M extends N{}
E.	None of these
Answer» E. None of these

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What is the outcome of below code box class? <pre class="prettyprint lang-c">class Shape { public int area() { return 0; } } class Square extends Shape { public int area() { return 5; } } class Rectangle extends Shape { public int area() { return 9; } } public class box { public static void main(String[] args) { Shape obj = new Square(); Shape obj0 = new Rectangle(); obj = obj0; System.out.println(obj.area()); } } </pre>
What is the outcome of below code Box class? <pre class="prettyprint lang-c">class Shape { public int area() { return 1; } } class Square extends Shape { public int area() { return 2; } } class Rectangle extends Shape { public int area() { return 3; } } public class Box { public static void main(String[] args) { Shape obj = new Shape(); Square obj0 = new Square(); Rectangle obj1 = new Rectangle(); obj1 = (Rectangle)obj0; System.out.println(obj0.area()); } } </pre>
What is the outcome of below code Output class? <pre class="prettyprint lang-c">class Shape { public int area() { return 2; } } class Square extends Shape { public int area() { return 5; } } class Rectangle extends Shape { public int area() { return 7; } } public class Output { public static void main(String[] args) { Shape obj = new Shape(); Square obj0 = new Square(); Rectangle obj1 = new Rectangle(); obj1 = (Rectangle)obj; System.out.println(obj0.area()); } } </pre>
What is the outcome of below code SquareExample class? <pre class="prettyprint lang-c">class Shape { public int area() { return 2; } } class Square extends Shape { public int area() { return 7; } } public class SquareExample { public static void main(String[] args) { Shape obj = new Shape(); Square obj0 = new Square(); obj0 = obj; System.out.println(obj0.area()); } } </pre>
What is the outcome of below code Rectangle_Example class? <pre class="prettyprint lang-c">class Shape { public int area() { return 2; } } class Rectangle extends Shape { public int area() { return 6; } } public class Rectangle_Example { public static void main(String[] args) { Shape obj = new Shape(); Rectangle obj0 = new Rectangle(); obj = obj0; System.out.println(obj.area()); } } </pre>
Which two classes use the Shape class correctly? <pre class="prettyprint lang-c"> A. public class Circle implements Shape { private int radius; } B. public abstract class Circle extends Shape { private int radius; } C. public class Circle extends Shape { private int radius; public void draw(); } D. public abstract class Circle implements Shape { private int radius; public void draw(); } E. public class Circle extends Shape { private int radius; public void draw() { /* code here */ } } F. public abstract class Circle implements Shape { private int radius; public void draw() { /* code here */ } } </pre>
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What is the output of this program? <pre class="prettyprint lang-c"> class N { public int K; public int L; N() { K = 5; L = 2; } } class M extends N { int p; M() { super(); } } public class inheritance_super_use { public static void main(String args[]) { M obj = new M(); System.out.println(obj.K + " " + obj.L); } } </pre>
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What is the outcome of below Square_Shape_Example class? <pre class="prettyprint lang-c">class Shape { public int area() { return 1; } } class Square extends Shape { public int area() { return 5; } } public class Square_Shape_Example { public static void main(String[] args) { Shape obj = new Shape(); Square square = new Square(); obj = square; System.out.println(obj.area()); } } </pre>

Which of these is correct way of inheriting class N by class M?

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