Java Coding MCQ Questions and answers

A

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Q. Determine output:

Code:

class A{
        public static void main(String args[]){
	        int x;
 	        x = 10;
	        if(x == 10){
		        int y = 20;
		        System.out.print("x and y: "+ x + " " + y);
		        y = x*2;
	        }
	        y = 100;
	        System.out.print("x and y: " + x + " " + y);
        }
}

(A) 10 20 10 100
(B) 10 20 10 20
(C) 10 20 10 10
(D) Error

A

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Q. What is the purpose of this bit of code?~void init()~{~~~}

(A) A class that initializes the applet.
(B) A required method in an applet.
(C) A place to declare variables.
(D) Interacting with the user.

A

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Q. Will this Java program generate same output is executed again?
class Output
{
public static void main(String args[])
{
int y = double z = Math.random();
System.out.print(y);
}
}

(A) Yes
(B) No
(C) Compiler Dependent
(D) Operating System Dependent

A

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Q. Consider the following list. int[] intList = {35, 12, 27, 18, 45, 16, 38}; What is the minimum number of comparisons that have to be made to find 18 using a sequential search on intList?

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

A

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Q. What will be the output of the following Java code snippet?
enum Levels
{
private TOP,

public MEDIUM,

protected BOTTOM;
}

(A) Runtime Error
(B) EnumNotDefined Exception
(C) It runs successfully
(D) Compilation Error

A

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Q. What is the output of the Java code snippet?

Code:

int a=10, b=5, c=3;
int d = a+c/2*b;
System.out.println(d);

(A) 17.5
(B) 32.5
(C) 15
(D) 30

Java Coding MCQs with answers Page - 1

Q. Determine output:

Q. What is the purpose of this bit of code?~void init()~{~~~}

Q. Will this Java program generate same output is executed again?
class Output
{
public static void main(String args[])
{
int y = double z = Math.random();
System.out.print(y);
}
}

Q. Consider the following list. int[] intList = {35, 12, 27, 18, 45, 16, 38}; What is the minimum number of comparisons that have to be made to find 18 using a sequential search on intList?

Q. What will be the output of the following Java code snippet?
enum Levels
{
private TOP,

public MEDIUM,

protected BOTTOM;
}

Q. What is the output of the Java code snippet?

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Java Coding MCQs with answers Page - 1

Q. Determine output:

Q. What is the purpose of this bit of code?~~~void init()~~~{~~~}

Q. Will this Java program generate same output is executed again? class Output { public static void main(String args[]) { int y = double z = Math.random(); System.out.print(y); } }

Q. Consider the following list. int[] intList = {35, 12, 27, 18, 45, 16, 38}; What is the minimum number of comparisons that have to be made to find 18 using a sequential search on intList?

Q. What will be the output of the following Java code snippet? enum Levels { private TOP, public MEDIUM, protected BOTTOM; }

Q. What is the output of the Java code snippet?

Browse More Tags

What's Tag

Q. What is the purpose of this bit of code?~void init()~{~~~}

Q. Will this Java program generate same output is executed again?
class Output
{
public static void main(String args[])
{
int y = double z = Math.random();
System.out.print(y);
}
}

Q. What will be the output of the following Java code snippet?
enum Levels
{
private TOP,

public MEDIUM,

protected BOTTOM;
}