Explore topic-wise MCQs in Java Programming.

This section includes 155 Mcqs, each offering curated multiple-choice questions to sharpen your Java Programming knowledge and support exam preparation. Choose a topic below to get started.

51.

What is the output of this program? class increment { public static void main(String args[]) { int g = 3; System.out.print(++g * 8); } }

A. 25
B. 24
C. 32
D. 33
Answer» D. 33
Discussion
52.

What is the output of this program? class area { public static void main(String args[]) { double r, pi, a; r = 9.8; pi = 3.14; a = pi * r * r; System.out.println(a); } }

A. 301.5656
B. 301
C. 301.56
D. 301.56560000
Answer» B. 301
Discussion
53.

What is the output of this program? class evaluate { public static void main(String args[]) { int a[] = {1,2,3,4,5}; int d[] = a; int sum = 0; for (int j = 0; j < 3; ++j) sum += (a[j] * d[j + 1]) + (a[j + 1] * d[j]); System.out.println(sum); } }

A. 38
B. 39
C. 40
D. 41
Answer» D. 41
Discussion
54.

What is the output of this program? class array_output { public static void main(String args[]) { int array_variable [] = new int[10]; for (int i = 0; i < 10; ++i) { array_variable[i] = i/2; array_variable[i]++; System.out.print(array_variable[i] + " "); i++; } } }

A. 0 2 4 6 8
B. 1 2 3 4 5
C. 0 1 2 3 4 5 6 7 8 9
D. 1 2 3 4 5 6 7 8 9 10
Answer» C. 0 1 2 3 4 5 6 7 8 9
Discussion
55.

What is the output of this program? class variable_scope { public static void main(String args[]) { int x; x = 5; { int y = 6; System.out.print(x + " " + y); } System.out.println(x + " " + y); } }

A. 5 6 5 6
B. 5 6 5
C. Runtime error
D. Compilation error
Answer» E.
Discussion
56.

Which of these is incorrect string literal?

A. “Hello World”
B. “Hello\nWorld”
C. “\”Hello World\””
D. “\”HelloWorld\””
Answer» E.
Discussion
57.

What is the output of this program? class dynamic_initialization { public static void main(String args[]) { double a, b; a = 3.0; b = 4.0; double c = Math.sqrt(a * a + b * b); System.out.println(c); } }

A. 5.0
B. 25.0
C. 7.0
D. Compilation Error
Answer» B. 25.0
Discussion
58.

What is the output of this program? class array_output { public static void main(String args[]) { char array_variable [] = new char[10]; for (int i = 0; i < 10; ++i) { array_variable[i] = 'i'; System.out.print(array_variable[i] + "" ); i++; } } }

A. i i i i i
B. 0 1 2 3 4
C. i j k l m
D. None of the mentioned
Answer» B. 0 1 2 3 4
Discussion
59.

What is the output of this program? class mainclass { public static void main(String args[]) { boolean var1 = true; boolean var2 = false; if (var1) System.out.println(var1); else System.out.println(var2); } }

A. 0
B. 1
C. true
D. false
Answer» D. false
Discussion
60.

What is the output of this program? class booloperators { public static void main(String args[]) { boolean var1 = true; boolean var2 = false; System.out.println((var2 & var2)); } }

A. 0
B. 1
C. true
D. false
Answer» E.
Discussion
61.

What is the output of this program? class asciicodes { public static void main(String args[]) { char var1 = 'A'; char var2 = 'a'; System.out.println((int)var1 + " " + (int)var2); } }

A. 162
B. 65 97
C. 67 95
D. 66 98
Answer» C. 67 95
Discussion
62.

What is the output of this program? class increment { public static void main(String args[]) { double var1 = 1 + 5; double var2 = var1 / 4; int var3 = 1 + 5; int var4 = var3 / 4; System.out.print(var2 + " " + var4); } }

A. 1 1
B. 0 1
C. 1.5 1
D. 1.5 1.0
Answer» D. 1.5 1.0
Discussion
63.

What is the output of this program? class Modulus { public static void main(String args[]) { double a = 25.64; int b = 25; a = a % 10; b = b % 10; System.out.println(a + " " + b); } }

A. 5.640000000000001 5
B. 5.640000000000001 5.0
C. 5 5
D. 5 5.640000000000001
Answer» B. 5.640000000000001 5.0
Discussion
64.

What is the output of this program? class increment { public static void main(String args[]) { int g = 3; System.out.print(++g * 8); } }

A. 25
B. 24
C. 32
D. 33
Answer» D. 33
Discussion
65.

What is the output of this program? class Output { public static void main(String args[]) { int a = 1; int b = 2; int c; int d; c = ++b; d = a++; c++; b++; ++a; System.out.println(a + " " + b + " " + c); } }

A. 3 2 4
B. 3 2 3
C. 2 3 4
D. 3 4 4
Answer» E.
Discussion
66.

What will be the output of the program? class Test { public static void main(String [] args) { int x=20; String sup = (x < 15) ? "small" : (x < 22)? "tiny" : "huge"; System.out.println(sup); } }

A. small
B. tiny
C. huge
D. Compilation fails
Answer» C. huge
Discussion
67.

Which three are legal array declarations? int [] myScores []; char [] myChars; int [6] myScores; Dog myDogs []; Dog myDogs [7];

A. 1, 2, 4
B. 2, 4, 5
C. 2, 3, 4
D. All are correct.
Answer» B. 2, 4, 5
Discussion
68.

In Java, the ……………………… is used to access the instance variables and methods of class objects.

A. dot operator(.)
B. instanceof
C. bitwise
D. conditional
Answer» B. instanceof
Discussion
69.

When one of the operands is real and the other is integer, the expression is called a ……………………. expression.

A. hybrid
B. mix-mode-arithmetic
C. arithmetic
D. real-integer
Answer» C. arithmetic
Discussion
70.

If a and b are integers, then for a=14 and b=4 what will be the value of expression a/b.

A. 3
B. 2
C. 4
D. 1
Answer» B. 2
Discussion
71.

What will be result of the result of the expression -14%-3

A. 2
B. -2
C. 4
D. -4
Answer» C. 4
Discussion
72.

If a=20 and b=15 then the statement x=(a>b) ? a:b; will assign value of x.

A. 5
B. 15
C. 20
D. 35
Answer» D. 35
Discussion
73.

If int x=15; y=20; what will be the value of x after executing the following statement x=(x

A. 5
B. 15
C. 25
D. 35
Answer» E.
Discussion
74.

When a=9, b=12 and c=3 what will be the value of x for the expression x=9-12/3+3*2-1

A. 10
B. 11
C. 7
D. 8
Answer» B. 11
Discussion
75.

If j and k are int type variables, what will be the result of the expression j%k when j=10 and k=3?

A. 0
B. 1
C. 2
D. 3
Answer» C. 2
Discussion
76.

What will be the values of x, y and z after execution of the following statements?int x, y, z; x=9; y=10; z=++x=y++;

A. z=21, x=11, y=11
B. z=20, x=10, y=11
C. z=21, x=11, y=10
D. z=20, x=10, y=10
Answer» C. z=21, x=11, y=10
Discussion
77.

What will be the result of the expression of 8|8.

A. 16
B. 1
C. 8
D. 64
Answer» D. 64
Discussion
78.

To change the order in which expressions are evaluated …………………. are placed around the expression that are to be evaluated first.

A. ampersand
B. equals
C. parentheses
D. greater than
Answer» D. greater than
Discussion
79.

When the operators are having the same priority, they are evaluated from ………………………….. in the order they appear in the expression.

A. left to right
B. right to left
C. any of the above
D. none of the above
Answer» B. right to left
Discussion
80.

The ………………… statement tests the value of a given variable against a list of case values and when a match is found, a block of statements associated with that case is executed.

A. switch
B. break
C. continue
D. default
Answer» B. break
Discussion
81.

When the operator ++ is placed after the variable name, first assignment of the value of the variable takes place and then the value of the variable is incremented, this operation is also called ………………………….. .

A. pre increment
B. post increment
C. left to right increment
D. right to left increment
Answer» C. left to right increment
Discussion
82.

The ……………………… statement at the end of each block signals the end of a particular case and causes an exit from the switch statement, transferring the control to the statement following the switch.

A. switch
B. break
C. continue
D. default
Answer» C. continue
Discussion
83.

The ………………. is an optional case, when it will be executed if the value of the expression does not match with any of the case values.

A. switch
B. break
C. continue
D. default
Answer» E.
Discussion
84.

Here is a segment of a program x=1; y=1; if(n>0) x=x+1; y=y-1; what will be the values of x and y if n=1.

A. x=1, y=1
B. x=0, y=2
C. x=2, y=1
D. x=2, y=0
Answer» E.
Discussion
85.

What will be the output of the following code. int j=50; while(true) { if(j<10) break; j=j-10; } System.out.println(“j is “+j);

A. Error
B. j is 0
C. j is 50
D. No output
Answer» C. j is 50
Discussion
86.

If you need to select among a large group of values, a switch statement will run much faster than the equivalent logic coded using ……………….. statement.

A. if
B. if-else
C. do-while
D. while
Answer» C. do-while
Discussion
87.

The ………………………. loop is especially useful when you process a menu selection.

A. while
B. do-while
C. for
D. switch
Answer» C. for
Discussion
88.

State output of the following code int x=20; int y=10; if(x>y) { if (y>10) System.out.println(“y is “+y); } else System.out.println(“x is “+x);

A. Error
B. x is 20
C. y is 10
D. No output
Answer» E.
Discussion
89.

By using …………………….., you can force immediate termination of loop, bypassing the conditional expression and any remaining code in the body of the loop.

A. switch
B. break
C. continue
D. default
Answer» C. continue
Discussion
90.

Which of the following control expressions are valid for an if statement?

A. an integer expression
B. a Boolean expression
C. either A or B
D. Neither A or B
Answer» C. either A or B
Discussion
91.

In while and do-while loops, a ………………… statement causes control to be transferred directly to the conditional expression that controls the loop.

A. break
B. pause
C. start
D. continue
Answer» E.
Discussion
92.

What will be the output of the following code. int x, y; x=15; y=20; if (x>15) if(y>15) { System.out.println(“y is “+y); } else System.out.println(“x is “+x);

A. Error
B. y is 20
C. x is 15
D. No output
Answer» D. No output
Discussion
93.

The conditional statement, _______ can only test for equality, whereas _________ can evaluate any type of Boolean expression.

A. if, switch
B. switch, if
C. while, if
D. if, while
Answer» C. while, if
Discussion
94.

What will be the output of the following code snippet? int a=15; int b=25; if ((a15) System.out.println(a); else System.out.println(b);

A. Error
B. 15
C. 25
D. No output
Answer» C. 25
Discussion
95.

__________ statement provides an easy way to dispatch execution to different parts of your code based on the value of an expression.

A. if-else
B. switch
C. if
D. while
Answer» C. if
Discussion
96.

What is the output of this program? class selection_statements { public static void main(String args[]) { int var1 = 5; int var2 = 6; if ((var2 = 1) == var1) System.out.print(var2); else System.out.print(++var2); } }

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
97.

What is the output of this program? class comma_operator { public static void main(String args[]) { int sum = 0; for (int i = 0, j = 0; i < 5 & j < 5; ++i, j = i + 1) sum += i; System.out.println(sum); } }

A. 5
B. 6
C. 14
D. compilation error
Answer» C. 14
Discussion
98.

What is the value of a[1] after the following code is executed? int[] a = {0, 2, 4, 1, 3}; for(int i = 0; i < a.length; i++) a[i] = a[(a[i] + 3) % a.length];

A. 0
B. 1
C. 2
D. 3
Answer» C. 2
Discussion
99.

What is the output of this program? class array_output { public static void main(String args[]) { char array_variable [] = new char[10]; for (int i = 0; i < 10; ++i) { array_variable[i] = 'i'; System.out.print(array_variable[i] + ""); } } }

A. 1 2 3 4 5 6 7 8 9 10
B. 0 1 2 3 4 5 6 7 8 9 10
C. i j k l m n o p q r
D. i i i i i i i i i i
Answer» E.
Discussion
100.

What is the output of this program? class array_output { public static void main(String args[]) { int array_variable[][] = {{ 1, 2, 3}, { 4 , 5, 6}, { 7, 8, 9}}; int sum = 0; for (int i = 0; i < 3; ++i) for (int j = 0; j < 3 ; ++j) sum = sum + array_variable[i][j]; System.out.print(sum / 5); } }

A. 8
B. 9
C. 10
D. 11
Answer» C. 10
Discussion