Which of the following is true? 1. A class can extend more than one class. 2. A

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Which of the following is true?
1. A class can extend more than one class.
2. A class can extend only one class but many interfaces.
3. An interface can extend many interfaces.
4. An interface can implement many interfaces.
5. A class can extend one class and implement many interfaces.

Answer: Option C

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Question 1. What is the result of compiling and running the following code? class Base{ public Base(){ System.out.print("Base"); } }....extends Base{ public Derived(){ this("Examveda"); System.out.print("Derived"); } public Derived(String s){ System.out.print(s); } public static void main(String[] args){ new Derived(); } }

Question 2. The concept of multiple inheritance is implemented in Java by I. Extending two or more classes. II. Extending on....and implementing one or more interfaces. III. Implementing two or more interfaces.

Question 3. What is the output of the following program code? abstract class C1{ public C1(){ System.out.print(1); } } class C2 exte....extends C2{ public C3(){ System.out.println(3); } } public class Test{ public static void main(String[] a){ new C3(); } }

Question 4. What will be the output? interface A{ public void method1(); } class One implements A{ public void method1(){ System.out....extends Two{ public static void main(String[] args){ A a = new Two(); a.method1(); } }

Question 5. Determine output: class A{ public void method1(){ System.out.print("Class A method1"); } } class B extends A{ public voi....a = new A(); C c = new C(); c.method2(); a = c; a.method3(); } }

Question 6. What is the result of compiling and running this program? class Mammal{ void eat(Mammal m){ System.out.println("Mammal e....main(String[] args){ Mammal h = new Horse(); Cattle c = new Horse(); c.eat(h); } }

Question 7. What will be printed after executing following program code? class Base{ int value = 0; Base(){ addValue(); } void addVa....class Test{ public static void main(String[] args){ Base b = new Derived(); System.out.println(b.getValue()); } }

Question 8. What will be the output? class Parent{ public void method(){ System.out.println("Hi i am parent"); } } public class Chil....am Child"); } public static void main(String args[]){ Child child = new Child(); child.method(); } }

Question 9. What will be the output? class One{ final int a = 15; } class Two extends One{ final int a = 20; } public class Test ext....= 30; public static void main(String args[]){ Test t = new One(); System.out.print(t.a); } }

Question 10. What will be the result after compiling this code? class SuperClass{ public int doIt(String str, Integer... data)throws ....0; } public static void main(String... args){ SuperClass sb = new Test(); sb.doIt("hello", 3); } }

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