Java 4C123 2

what is the output of this question?

class Test1 {

static int x = 10;

public

static void main(String[] args)

{

Test1 t1 = new Test1();

Test1 t2 = new Test1();

t1.x = 20;

System.out.print(t1.x + " ");

System.out.println(t2.x);

}

}

• 10 10

• 20 20

• 10 20

• 20 10

What is the output of this question?

class Test1 {

static int i = 1;

public static void main(String[] args)

{

for (int i = 1; i < 10; i++) {

i = i + 2;

System.out.print(i + " ");

}

}

}

• 3 6 9

• 3 6 9 …. 27

• Error

• none

Predict the output of the following program.

class A{

int a=40;//non static

public static void main(String args[]){

System.out.println(a);

}

}

• Compilation Error

• 40

• 0

• None of the above

predict the output

• Static block

• nothing prints

• compile time error

• 515

• 1020

• 20

• 30

static block can call non static methods with the help of object.

• true

• false

The different between static and non static method is ....

• for non static method : user need to create object in a class to call a method.

• A method is to perform only specific task.

• There is no significant differences between static and non - static method.

• Both are bounded with a class.

Which of these class is super class of every class in Java?

• String class

• Object class

• ArrayList class

• Abstract class

Which of these keywords can be used to prevent inheritance of a class?

• super

• constant

• extends

• final

Which of these class relies upon its subclasses for complete implementation of its methods?

• Object class

• abstract class

• ArrayList class

• None of the mentioned