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Java Multiple Choice Questions For Beginners - 25

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Question: 50

public class Main
{   
public static void main(String[] args) {
		int a = 10;
		String temp = Integer.toString(a);
		System.out.println(temp);
	}
}

(A) Compilation Error
(B) Exception
(C) 10
(D) 1

Level: Beginner Category of MCQ: typecasting

Question: 51

public class Main
{   
public static void main(String[] args) {
	float a = 10.0f;
	String temp = Float.toString(a);
	System.out.println(temp);
}
}

(A) 10.0f
(B) 10.0
(C) 10
(D) 10.00

Level: Beginner Category of MCQ: typecasting

Question: 52

public class Main
{
public static void main(String[] args) {
    int a = 0;
	if(a==1);
	System.out.print("Sun");
	System.out.println("Moon");
}
}

(A) Compilation Error
(B) exception: unreachable code
(C) Sun
(D) SunMoon

Level: Beginner Category of MCQ: if-else

Question: 53

class cppbuzz{
    private void sum(){
        System.out.println("hi");
    }
}

public class Main
{
	public static void main(String[] args) {
		cppbuzz obj = new cppbuzz();
		obj.sum();
	}
}

(A) hi
(B) nothing is printed
(C) error: sum() has private access
(D) Exception

Level: Beginner Category of MCQ: classesAndobjects

Question: 54

class cppbuzz{
    protected void sum(){
        System.out.println("hi");
    }
}

public class Main
{
	public static void main(String[] args) {
		cppbuzz obj = new cppbuzz();
		obj.sum();
	}
}

(A) hi
(B) Compilation Error
(C) Nothing is printed
(D) Exception

Level: Beginner Category of MCQ: classesAndobjects

Question: 55

class cppbuzz{
    public static void sum(){
        System.out.println("hi");
    }
}
public class Main
{
	public static void main(String[] args) {
		cppbuzz obj = new cppbuzz();
		obj.sum();
	}
}

(A) hi
(B) Compilation Error
(C) Exception
(D) None of the above

Level: Beginner Category of MCQ: classesAndobjects

Question: 56

class cppbuzz{
    public static void sum(){
        System.out.println("hi");
    }
}
public class Main
{
	public static void main(String[] args) {
	    cppbuzz.sum();
	}
}

(A) hi
(B) Compilation Error
(C) Exception
(D) None of the above

Level: Beginner Category of MCQ: classesAndobjects

Question: 57

class cppbuzz{
    protected static void sum(){
        System.out.println("hi");
    }
}
public class Main
{
	public static void main(String[] args) {
	    cppbuzz.sum();
	}
}

(A) hi
(B) Compilation Error
(C) Exception
(D) None of the above

Level: Beginner Category of MCQ: classesAndobjects

Question: 58

class cppbuzz{
    private static void sum(){
        System.out.println("hi");
    }
}
public class Main
{
	public static void main(String[] args) {
	    cppbuzz.sum();
	}
}

(A) hi
(B) Compilation Error
(C) Exception
(D) None of the above

Level: Beginner Category of MCQ: classesAndobjects

Question: 59

Why use inheritance

(A) Inheritance increases execution of program
(B) Inheritance is useful in code re-usability
(C) Inheritance minimizes programming loop holes
(D) None of the above

Level: Beginner Category of MCQ: inheritance

Question: 60

What is 'extends' in java inheritance?

(A) extends is a datatype
(B) extends is a keyword
(C) extends is a class
(D) extend is a package

Level: Beginner Category of MCQ: inheritance

Question: 61

class Capgemini{
    private int a;
    public Capgemini(){
        a=10; 
   }
}

public class Main extends Capgemini
{
	public static void main(String[] args) {
		Main obj = new Main();
		System.out.println(obj.a);
	}
}

(A) 0
(B) 10
(C) Compilation Error
(D) Exception

Level: Beginner Category of MCQ: inheritance

Question: 62

If a class is 'public' then

(A) It CAN be accessed from ANYWHERE
(B) It CAN ONLY be accessed from ’same package’
(C) It can be accessed from the same file
(D) It can be access from the same project

Level: Beginner Category of MCQ: modifiers

Question: 63

How many levels of visibility Java has?

(A) 1
(B) 2
(C) 3
(D) 4

Level: Beginner Category of MCQ: inheritance

Question: 64

If a class has no modifier then

(A) It is visible to same project
(B) It is visible to same package
(C) It is visible to same file
(D) All of these

Level: Beginner Category of MCQ: modifiers

Question: 65

How may main() methods are allowed in a project of Java?

(A) 1
(B) 2
(C) 3
(D) Max 256

Level: Beginner Category of MCQ: classesAndobjects

Question: 66

In Java every data type requires some bytes of memory, How many bytes void data type requires?

(A) 1
(B) 2
(C) 3
(D) 0

Level: Beginner Category of MCQ: datatype

Question: 67

In case of 'try' & 'catch' block, is it possible to use only 'try' block instead of using 'catch'?

(A) Yes
(B) No

Level: Beginner Category of MCQ: exceptions

Question: 68

Find the output of below program

public class Main
{
public static void main(String[] args) {
    try{
	int a = -100;
	System.out.print(a);
    }
}
}

(A) -100
(B) Compilation Error
(C) Exception since catch is missing
(D) Exception since finally is missing

Level: Beginner Category of MCQ: exceptions

Question: 69

Can we use 'catch()' without passing arguments in it?

(A) Yes
(B) No It is compilation error

Level: Beginner Category of MCQ: exceptions

Question: 70

In Java how arrays are passed in methods?

(A) Arrays are passed by Value
(B) Arrays are passed by Reference
(C) It depends on type of array
(D) It depends on Compiler

Level: Beginner Category of MCQ: arrays

Question: 71

Can Abstract classes instantiated?

(A) Yes
(B) No

Level: Beginner Category of MCQ: abstractclass

Question: 72

What is 'abstract' in Java?

(A) It is an Keyword
(B) Its is a Data type
(C) It is a Class
(D) None of the above

Level: Beginner Category of MCQ: abstractclass

Question: 73

Find the output of below program

import java.util.*; 

public class Main
{
public static void main(String[] args) {
List<Integer> mylist = new ArrayList();
System.out.println(mylist.size());
}
}

(A) Compilation Error
(B) Exception
(C) 1
(D) 0

Level: Beginner Category of MCQ: collection

Question: 74

List is part of Java Collections API

(A) True
(B) False

Level: Beginner Category of MCQ: collection

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Java Multiple Choice Questions For Beginners - 25

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