Explore topic-wise MCQs in Java Programming.

This section includes 34 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.

In the below code, which call to num() method is appropriate?class Result { public static int num(int ...x) { return; } static void main(String args[]) { num(10); num(10,20); num(10,20,30); num(10,20,30,40); } }

A. only num(10,20)
B. only num(10)
C. only num(10) & num(10,20)
D. all of the mentioned
E. None of these
Answer» E. None of these
Discussion
2.

What is the output of this program?class box_Shape { int width; int height; int length; int vol; void vol() { vol = height * width * length; } } public class Result { public static void main(String args[]) { box_Shape obj = new box_Shape(); obj.height = 5; obj.length = 10; obj.width = 3; obj.vol(); System.out.println(obj.vol); } }

A. 150
B. 100
C. 200
D. 50
E. 250
Answer» B. 100
Discussion
3.

What is the output of this program?class equal { int p; int q; boolean isequal() { return(p == q); } } public class Result { public static void main(String args[]) { equal obj = new equal(); obj.p = 7; obj.q = 10; System.out.println(obj.isequal()); } }

A. Compiletime error
B. false
C. Runtime error
D. true
E. None of these
Answer» C. Runtime error
Discussion
4.

What is the output of this program?class box_Shape { int width; int height; int length; int volume; void volume(int heigth, int lenght, int width) { volume = width*height*length; } } public class Prameterized_method_Example { public static void main(String args[]) { box_Shape obj = new box_Shape(); obj.height = 5; obj.length = 6; obj.width = 10; obj.volume(5,6,10); System.out.println(obj.volume); } }

A. 100
B. 200
C. 300
D. 400
E. 500
Answer» D. 400
Discussion
5.

What is the output of this program?class calcluation { int p; int q; void calc(int K , int L) { K *= 5; L /= 5; } } public class result { public static void main(String args[]) { calculation obj = new calculation(); int p = 20; int q = 40; obj.calc(p , q); System.out.println(p + " " + q); } }

A. 10 20
B. 20 40
C. 30 40
D. 40 20
E. 20 10
Answer» C. 30 40
Discussion
6.

What is the output of this program?class method { int p; double q; void add(int n1 , int n2) { p = n1 + n2; } void add(double n3 , double n4) { q = n3 + n4; } method() { this.p = 0; this.q = 0; } } public class method_overload { public static void main(String args[]) { method obj = new method(); int n1 = 5; double n2 = 7.5; obj.add(n1, n1); obj.add(n2, n2); System.out.println(obj.p + " " + obj.q); } }

A. 10 15.0
B. 10.0 15
C. 15 10
D. 10.0 15.0
E. None of these
Answer» B. 10.0 15
Discussion
7.

What is the output of this program?class method { int p; int q; void add(int n1) { p = n1 + 3; } void add(int n1 , int n2) { p = n1 + 5; } } public class Method_overloading { public static void main(String args[]) { method obj = new method(); int n1 = 0; obj.add(10, 20); System.out.println(obj.p); } }

A. 11
B. 12
C. 13
D. 14
E. 15
Answer» F.
Discussion
8.

What is the output of this program?class method { int p; int q; void add(int n) { p = n + 2; } void add(int n, int b) { p = n + 5; } } public class method_overloading { public static void main(String args[]) { method obj = new method(); int n = 0; obj.add(10); System.out.println(obj.p); } }

A. 10
B. 11
C. 12
D. 13
E. 14
Answer» C. 12
Discussion
9.

What is the output of the following code?public class output{ public void method1 (int i,float f) { System.out.println(" int float method"); } public void method2(float f,int i); { System.out.println("float int method"); } public static void main(String[]args) { output s=new output(); s.method1(10,10); }}

A. float int method
B. int float method
C. Runtime error
D. Compiletime error
E. None of these
Answer» E. None of these
Discussion
10.

What is the output of this program?class calclution { int p; int q; calclution(int K, int L) { p = K; q = L; } void calc(calclution n) { n.p *= 2; n.p /= 2; } } public class Result { public static void main(String args[]) { calclution obj = new calclution(50 , 20); obj.calc(obj); System.out.println(obj.p + " " + obj.q); } }

A. 20 30
B. 50 20
C. 40 10
D. 20 50
E. 10 10
Answer» C. 40 10
Discussion
11.

What is the output of this program?class box_Shape { int w; int h; int l; int vol; void vol() { vol = w * h * l; } void vol(int p) { vol = p; } } public class Result { public static void main(String args[]) { box_Shape bs = new box_Shape(); bs.h = 2; bs.l = 7; bs.w = 6; bs.vol(6); System.out.println(bs.vol); } }

A. 50
B. 5
C. 60
D. 6
E. 16
Answer» E. 16
Discussion
12.

What is the output of this program?public class Result { public static void main(String args[]) { long start, end; start = System.currentTimeMillis(); for (int k = 0; k < 10000000; k++); end = System.currentTimeMillis(); System.out.print(end - start); } }

A. 0
B. 1
C. 200
D. 30
E. System Dependent
Answer» F.
Discussion
13.

What is the output of this program?public class Result { public static void main(String args[]) { Long n = new Long(230); System.out.print(n.hashCode()); } }

A. 220
B. 220.0
C. 230
D. 230.0
E. 250
Answer» D. 230.0
Discussion
14.

What is the output of this program?public class Result { public static void main(String args[]) { double num0 = 4.15; double num1 = 5.16; double num2 = Math.max( num0, num1 ); System.out.print(num2); } }

A. 5
B. 5.1
C. 4.15
D. 4.1
E. 5.16
Answer» F.
Discussion
15.

What is the output of this program?public class Math_Example { public static void main(String args[]) { int num0 = 10; int num1 = (int) Math.abs(num0); System.out.print(num1); } }

A. 10.0
B. 10
C. 1
D. 0
E. None of these
Answer» C. 1
Discussion
16.

What is the output of this program?public class Result { public static void main(String args[]) { byte array0[] = { 71, 72, 73, 74, 75, 76 }; byte array1[] = { 77, 78, 79, 80, 81, 82 }; System.arraycopy(array0 , 1, array1, 3, 0); System.out.print(new String(array0) + " " + new String(array1)); } }

A. GHIJKL
B. MNOPQR
C. GHIJKL MNOPQR
D. GHIJKLMNOPQR
E. None of these
Answer» D. GHIJKLMNOPQR
Discussion
17.

What is the output of this program?public class Result { public static void main(String args[]) { byte array0[] = { 71, 72, 73, 74, 75, 76 }; byte array1[] = { 77, 78, 79, 80, 81, 82 }; System.arraycopy(array0 , 2, array1, 1, array0.length-2); System.out.print(new String(array0) + " " + new String(array1)); } }

A. GHIJKL
B. MIJKLR
C. GHIJKLMIJKLR
D. GHIJKL MIJKLR
E. None of these
Answer» E. None of these
Discussion
18.

What is the output of this program?public class Result { public static void main(String args[]) { byte array0[] = { 71, 72, 73, 74, 75, 76 }; byte array1[] = { 77, 78, 79, 80, 81, 82 }; System.arraycopy(array0 , 0, array1, 0, array0.length); System.out.print(new String(array0) + " " + new String(array1)); } }

A. GHIJKL
B. GHIJKL GHIJKL
C. GHIJKLGHIJKL
D. GHIJKL GHIJ
E. None of these
Answer» C. GHIJKLGHIJKL
Discussion
19.

What is the output of this program?public class Output { public static void main(String args[]) { double num0 = 5.0; double num1 = 2.0; double num2 = Math.pow( num0, num1 ); System.out.print(num2); } }

A. 5
B. 2
C. 25
D. 25.0
E. 52
Answer» E. 52
Discussion
20.

What is the output of this program?public class Result { public static void main(String args[]) { Double num0 = new Double(260.0062); Double num1 = new Double(260.0062123456); try { int p = num1.compareTo(num0); System.out.print(p); } catch(ClassCastException e) { System.out.print("Exception"); } } }

A. Exception
B. 0
C. 1
D. -1
E. None of these
Answer» D. -1
Discussion
21.

What is the output of this program?public class Result { public static void main(String args[]) { Double num = new Double(260.00625023); float p = num.floatValue(); System.out.print(p); } }

A. 260.00626
B. 260
C. 260.00625023
D. 260.00
E. 260.260
Answer» B. 260
Discussion
22.

What is the output of this program?public class Result { public static void main(String args[]) { Double num = new Double(260.062); int p = num.intValue(); System.out.print(p); } }

A. 260.062
B. 260
C. 260.06
D. 260.0
E. 260.260
Answer» C. 260.06
Discussion
23.

What is the output of this program?public class Result { public static void main(String args[]) { Double num = new Double(260.1); boolean p = num.isNaN(); System.out.print(p); } }

A. 260.1
B. 260
C. true
D. false
E. None of these
Answer» E. None of these
Discussion
24.

What is the output of this program?public class Result { public static void main(String args[]) { Integer n = new Integer(260); float p = n.floatValue(); System.out.print(p); } }

A. 250
B. 250.0
C. 260
D. 260.0
E. None of these
Answer» E. None of these
Discussion
25.

What is the output of this program?class equal { int p; int q; boolean isequal() { return(p == q); } } public class Result { public static void main(String args[]) { equal equ = new equal(); equ.p = 7; equ.q = 5; System.out.println(equ.isequal()); } }

A. false
B. true
C. true false
D. false true
E. None of these
Answer» B. true
Discussion
26.

What is the output of this program?class box_Shape { int w; int h; int l; int vol; void vol(int h, int l, int w) { vol = w * h * l; } } public class Prameterized_method_Example { public static void main(String args[]) { box_Shape obj = new box_Shape(); obj.h = 6; obj.l = 3; obj.w = 4; obj.vol(6, 3, 4); System.out.println(obj.vol); } }

A. 68
B. 70
C. 72
D. 74
E. 76
Answer» D. 74
Discussion
27.

What is the output of this program?class box_Shape { int width; int length; int height; int volume; box_Shape() { width=8; length=3; height=5; } void volume() { volume = width*length*height; } } public class cons_method_Example { public static void main(String args[]) { box_Shape obj = new box_Shape(); obj.volume(); System.out.println(obj.volume); } }

A. 100
B. 110
C. 120
D. 130
E. 140
Answer» D. 130
Discussion
28.

What is the output of this program?public class Result { public static void main(String args[]) { double num0 = 205; double num1 = 2; double num2 = Math.IEEEremainder(num0, num1); System.out.print(num2); } }

A. 250
B. 2
C. 11
D. 1.0
E. None of these
Answer» E. None of these
Discussion
29.

What is the output of this program?public class Result { public static void main(String args[]) { double num =3.14; int p = (int) Math.toRadians(num); System.out.print(p); } }

A. 0
B. 1
C. 3.14
D. 3
E. None of these
Answer» B. 1
Discussion
30.

What is the output of this program?public class Result { public static void main(String args[]) { double num = 4.13; int p = (int) Math.toDegrees(num); System.out.print(p); } }

A. 236
B. 4.13
C. 230
D. 200
E. None of these
Answer» B. 4.13
Discussion
31.

Which of these method returns a smallest whole number greater than or equal to variable p?

A. double floor(double p)
B. double max(double p)
C. double min(double p)
D. double ciel(double p)
E. None of these
Answer» E. None of these
Discussion
32.

In the below code, which call to num() method is appropriate?

A. only num(10,20)
B. only num(10)
C. only num(10) & num(10,20)
D. all of the mentioned
E. None of these
Answer» E. None of these
Discussion
33.

At line number 2 below, choose 3 valid data-type attributes/qualifiers among final, static, native, public, private, abstract, protected

A. final, static, protected
B. static, final, public
C. abstract, final, private
D. native, final, private
E. None of these
Answer» C. abstract, final, private
Discussion
34.

Which of the following is a method having same name as that of it s class?

A. delete
B. constructor
C. finalize
D. class
E. None of these
Answer» C. finalize
Discussion