Explore topic-wise MCQs in Java Programming.

This section includes 30 Mcqs, each offering curated multiple-choice questions to sharpen your Java Programming knowledge and support exam preparation. Choose a topic below to get started.

1.

With x = 0, which of the following are legal lines of Java code for changing the value of x to 1?

 1. x++;
 2. x = x + 1;
 3. x += 1;
 4. x =+ 1;
A. 1, 2, 3 & 4
B. 3 & 2
C. 1 & 4
D. 1, 2 & 3
E. None of these
Answer» B. 3 & 2
Discussion
2.

On applying Left shift operator, <
    1. 32
    2. 31
    3. 33
    4. 1
    5. None of these

A. 32
B. 31
C. 33
D. 1
E. None of these
Answer» C. 33
Discussion
3.

What is the output of this program?

public class Output 
 {
 public static void main(String args[]) 
 { 
 int p = 5;
 int q = 7;
 int r;
 int s;
 r = ++q;
 s = p++;
 r++;
 q++;
 ++p;
 System.out.println(p + " " + q + " " + r);
 } 
 }
A. 6 7 7
B. 5 8 8
C. 7 9 9
D. 7 6 6
E. 8 7 7
Answer» D. 7 6 6
Discussion
4.

What is the output of this program?

public class RightShift_Operator 
 {
 public static void main(String args[]) 
 { 
 int a; 
 a = 100;
 a = a >> 1;
 System.out.println(a);
 } 
 }
A. 10
B. 20
C. 30
D. 40
E. 50
Answer» F.
Discussion
5.

What is the output of this program?

public class LeftShift_Operator 
 {
 public static void main(String args[]) 
 { 
 byte A = 65;
 int i;
 byte b; 
 i = A << 2;
 b = (byte) (A << 2);
 System.out.print(i + " " + b);
 } 
 }
A. 250 2
B. 260 2
C. 260 4
D. 230 6
E. 210 4
Answer» D. 230 6
Discussion
6.

Which of the following operators can operate on a boolean variable?

 1. &&
 2. ==
 3. ?:
 4. +=
A. 1 & 4
B. 1, 2 & 3
C. 1, 2 & 4
D. 3 & 2
E. None of these
Answer» C. 1, 2 & 4
Discussion
7.

What is the output of this program?

public class Output 
 {
 public static void main(String args[]) 
 { 
 int p = 5;
 int q = 6;
 int r = 7;
 p |= 4;
 q >>= 1;
 r <<= 1;
 p ^= r;
 System.out.println(p + " " + q + " " + r);
 } 
 }
A. 11 3 14
B. 10 10 10
C. 11 2 15
D. 11 2 14
E. 2 3 14
Answer» B. 10 10 10
Discussion
8.

What is the output of this program?

public class ternary_operator_Example
 {
 public static void main(String args[]) 
 { 
 int a = 5;
 int b = ~ a;
 int c;
 c = a > b ? a : b;
 System.out.print(c);
 } 
 }
A. 6
B. 4
C. 3
D. 5
E. 2
Answer» E. 2
Discussion
9.

What is the output of this program?

public class bool_operator_Example
 {
 public static void main(String args[]) 
 { 
 boolean p = true;
 boolean q = !true;
 boolean r = p | q;
 boolean s = p & q;
 boolean z = s ? q : r;
 System.out.println(s + " " + z);
 } 
 }
A. false true
B. true false
C. true ture
D. false false
E. None of these
Answer» B. true false
Discussion
10.

What is the output of this program?

public class Relational_operator_Example
 {
 public static void main(String args[])
 {
 int num1 = 7; 
 int num2 = 6;
 System.out.print(num1 > num2);
 } 
 }
A. true
B. false
C. 1
D. 0
E. None of these
Answer» B. false
Discussion
11.

What is the value stored in p in following lines of code?

 int p, q, r;
 p = 0;
 q = 1;
 p = q = r = 8;
A. 9
B. 8
C. 7
D. 6
E. 5
Answer» C. 7
Discussion
12.

What is the output of this program?

public class operators_Example
 {
 public static void main(String args[])
 {
 int num1 = 10; 
 int num2 = 20;
 int num3;
 num3 = num2 + num2 * num1 / num2 + num2;
 System.out.print(num3);
 } 
 }
A. 50
B. 40
C. 30
D. 20
E. 10
Answer» B. 40
Discussion
13.

What is the output of this program?

public class Bitwise_Operator 
 {
 public static void main(String args[])
 {
 int num1 = 30;
 int num2 = ~num1;
 System.out.print(num1 + " " + num2); 
 } 
 }
A. 30 -31
B. 40 -40
C. 30 -30
D. 31 -30
E. -40 41
Answer» B. 40 -40
Discussion
14.

What is the order of precedence (highest to lowest) of following operators?

 1. & 
 2. ^
 3. ?:
A. 3 -> 2 -> 1
B. 1 -> 2 -> 3
C. 2 -> 1 -> 3
D. 2 -> 3 -> 1
E. None of these
Answer» C. 2 -> 1 -> 3
Discussion
15.

What is the output of this program?

public class Bitwise_Operator 
 {
 public static void main(String args[]) 
 { 
 int p = 8;
 int q = 8;
 int r = p | q;
 int s = p & q; 
 System.out.println(r + " " + s);
 } 
 }
A. 9 9
B. 7 7
C. 8 8
D. 10 10
E. 5 5
Answer» D. 10 10
Discussion
16.

What should be expression1 evaluate to in using ternary operator as in this line?

 expression1 ? expression2 : expression3
A. Boolean
B. Floating point numbers
C. Integer
D. float
E. None of these
Answer» D. float
Discussion
17.

What is the output of this program?

public class Modulus_Example 
 {
 public static void main(String args[]) 
 { 
 double p = 10.34;
 int q = 20;
 p = p % 15;
 q = q % 20;
 System.out.println(p + " " + q);
 } 
 }
A. 10 0.0
B. 11 10.00
C. 10.22 10
D. 10.34 0
E. 2 10.21
Answer» E. 2 10.21
Discussion
18.

What is the output of this program?

public class increment _Example
 {
 public static void main(String args[]) 
 { 
 int a = 5;
 System.out.print(++a * 10);
 } 
 }
A. 50
B. 60
C. 70
D. 80
E. 90
Answer» C. 70
Discussion
19.

What is the output of this program?

public class Increment 
 {
 public static void main(String args[])
 {
 double num1 = 5 + 10; 
 double num2 = num1 / 6;
 int num3 = 10 + 5;
 int num4 = num3 / 6;
 System.out.print(num2 + " " + num4);
 
 } 
 }
A. 0 2
B. 2.5 2
C. 2.5 1
D. 3 2
E. 1 1
Answer» C. 2.5 1
Discussion
20.

Which of these lines of code will give better performance?

 1. p | 8 + r >> q & 10; 
 2. (p | ((( 8 * r) >> q ) & 10 ))
A. 2 will give better performance as it has parentheses.
B. Dependent on the computer system.
C. 1 will give better performance as it has no parentheses.
D. Both 1 & 2 will give equal performance.
E. None of these
Answer» E. None of these
Discussion
21.

What is the output of this program?

public class Result
{
 public static void main(String args[]) 
 { int q,r;
 int p=q=r=26;
 System.out.print(+p);
 
 } 
}
A. 25
B. 26
C. 27
D. 24
E. 23
Answer» C. 27
Discussion
22.

What is the output of this program?

public class operators 
 {
 public static void main(String args[]) 
 { 
 int p = 10;
 System.out.println(++p * 5 + " " + p);
 } 
 }
A. 44 11
B. 33 11
C. 55 11
D. 66 11
E. 11 55
Answer» D. 66 11
Discussion
23.

What is the output of this program?

public class Result 
 {
 public static void main(String args[]) 
 { 
 int p , q = 1;
 p = 20;
 if(p != 20 && p / 0 == 0)
 System.out.println(q);
 else
 System.out.println(++q);
 } 
 }
A. 0
B. 1
C. 2
D. 3
E. 4
Answer» D. 3
Discussion
24.

What is the output of this program?

public class Result 
{
 public static void main(String args[]) 
 { 
 int p,q,r,s;
 p=q=r=s=10;
 p+=q-=r*=s/=10;
 System.out.println(p+" "+q+" "+r+" "+s);
 
 } 
}
A. 20 0 20 1
B. 10 0 10 1
C. 10 0 0 10
D. 20 0 0 20
E. 10 10 0 1
Answer» C. 10 0 0 10
Discussion
25.

What is the value stored in p in following lines of code?

A. 9
B. 8
C. 7
D. 6
E. 5
Answer» C. 7
Discussion
26.

Which of the following operators can operate on a boolean variable?

A. 1 & 4
B. 1, 2 & 3
C. 1, 2 & 4
D. 3 & 2
E. None of these
Answer» C. 1, 2 & 4
Discussion
27.

On applying Left shift operator, <

A. 32
B. 31
C. 33
D. 1
E. None of these
Answer» C. 33
Discussion
28.

Which operator is used to invert all the digits in binary representation of a number?

A. <<<
B. ^
C. >>>
D. ~
E. None of these
Answer» E. None of these
Discussion
29.

Which of these is returned by greater than , less than and equal to operators?

A. Boolean
B. Floating point numbers
C. Integers
D. None of these
E. NA
Answer» B. Floating point numbers
Discussion
30.

Decrement operator, , decreases value of variable by what number?

A. 4
B. 1
C. 2
D. 3
E. None of these
Answer» C. 2
Discussion