Quizz_TG

What is the output for the below code ?

• Compile fail due to error on line no 2
• Compile fail due to error on line no 9
• Compile fail due to error on line no 8
• 15

What is the output for the below code ? public class A { int k; boolean istrue; static int p; public void printValue() { System.out.print(k); System.out.print(istrue); System.out.print(p); } } public class Test { public static void main(String argv[]) { A a = new A(); a.printValue(); } }

• 0 false 0
• 0 true 0
• 0 0 0
• Compile error - static variable must be initialized before use.

What is the output for the below code ? package com; class Animal { public void printName() { System.out.println("Animal"); } } package exam; import com.Animal; public class Cat extends Animal { public void printName() { System.out.println("Cat"); } } package exam; import com.Animal; public class Test { public static void main(String[] args) { Animal a = new Cat(); a.printName(); } }

• Animal
• Cat
• Animal Cat
• Compile Error

What is the output for the below code ? public class A { static { System.out.println("static"); } { System.out.println("block"); } public A() { System.out.println("A"); } public static void main(String[] args){ A a = new A(); } }

• A block static
• static block A
• static A
• A

What is the output for the below code ? 1. public class Test { 2. public static void main(String[] args){ 3. int i = 010; 4. int j = 07; 5. System.out.println(i); 6. System.out.println(j); 7. } 8. }

• 8 7
• 10 7
• Compilation fails with an error at line 3
• Compilation fails with an error at line 5

What is the output for the below code ? public class Test { public static void main(String[] args) { String value = "abc"; changeValue(value); System.out.println(value); } public static void changeValue(String a) { a = "xyz"; } }

• abc
• xyz
• Compilation fails
• Compilation clean but no output

try{ File f = new File("a.txt"); }catch(Exception e){ }catch(IOException io){ } Is this code create new file name a.txt ?

• True
• False
• Compilation Error
• None

class A { A(String s) { } A() { } } 1. class B extends A { 2. B() { } 3. B(String s) { 4. super(s); 5. } 6. void test() { 7. // insert code here 8. } 9. } Which of the below code can be insert at line 7 to make clean compilation ?

• A a = new B();
• A a = new B(5);
• A a = new A(String s);
• All of the above

class A { class A1 { void printValue() { System.out.println("A.A1"); } } } 1. public class Test{ 2. public static void main (String[] args){ 3. A a = new A(); 4. // INSERT CODE 5. a1.printValue(); 6. } 7. } Which of the below code inserted at line 4, compile and produce the output "A.A1"?

• A.A1 a1 = new A.A1();
• A.A1 a1 = a.new A1();
• A a1 = new A.A1();
• All of the above

What is the output for the below code ? public class D { int i; int j; public D(int i, int j) { this.i = i; this.j = j; } public void printName() { System.out.println("Name-D"); } } 1. public class Test{ 2. public static void main (String[] args){ 3. D d = new D(); 4. d.printName(); 5. 6. } 7. }

• Name-D
• Compilation fails due to an error on lines 3
• Compilation fails due to an error on lines 4
• Compilation succeed but no output