Explore topic-wise MCQs in Java Programming.

This section includes 10 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.

What is the output of this program?class box_area { int w; int l; int h; box_area() { w = 7; l = 4; h = 2; } void volume() { int vol = w * h * l; System.out.println(vol); } } public class cons_method { public static void main(String args[]) { box_area obj = new box_area(); obj.volume(); } }

A. 36
B. 46
C. 54
D. 56
E. 66
Answer» E. 66
Discussion
2.

What is the output of this program?class modifier { static int p; static int q; void addition(int n1 , int n2) { p = n1 + n2; q = p + n2; } } public class static_use { public static void main(String args[]) { modifier obj1 = new modifier(); modifier obj2 = new modifier(); int n1 = 5; obj1.addition(n1, n1 + 3); obj2.addition(7, n1); System.out.println(obj1.p + " " + obj2.q); } }

A. 12 17
B. 17 12
C. 11 12
D. 12 11
E. None of these
Answer» B. 17 12
Discussion
3.

What is the output of this program?public class Result { 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. 2
B. 0
C. Compilation error
D. Runtime error
E. None of these
Answer» D. Runtime error
Discussion
4.

What is the output of this program?

A. 1 25
B. 20 1
C. 30 20
D. 25 1
E. 1 20
Answer» E. 1 20
Discussion
5.

What is the output of this program?class access_Example { public int p; private int q; void calc(int n1, int n2) { p = n1 + 1; q = n2; } } public class access_specifier { public static void main(String args[]) { access_Example obj = new access_Example(); obj.cal(5, 7); System.out.println(obj.p + " " + obj.q); } }

A. 5 7
B. 7 7
C. Compiletime error
D. Runtime error
E. None of these
Answer» D. Runtime error
Discussion
6.

What is the output of this program?class static_Access { static int p; static int q; void add(int n1, int n2) { p = n1 + n2; q = p + n2; } } public class static_output { public static void main(String args[]) { static_Access obj1 = new static_Access(); static_Access obj2 = new static_Access(); int n1 = 5; obj1.add(n1, n1 + 2); obj2.add(6, n1); System.out.println(obj1.p + " " + obj2.q); } }

A. 11 16
B. 16 11
C. 17 11
D. 11 17
E. None of these
Answer» B. 16 11
Discussion
7.

What is the output of this program?class modifier { static int p; void method() { p++; } } public class static_keyword { public static void main(String args[]) { modifier obj1 = new modifier(); modifier obj2 = new modifier(); obj1.p = 5; obj1.method(); obj2.method(); System.out.println(obj1.p + " " + obj2.p); } }

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

What is the output of this program?class Modifier { public int p; static int q; void cal(int n1, int n2) { p += n1; q += n2; } } public class static_keyword { public static void main(String args[]) { Modifier obj1 = new Modifier(); Modifier obj2 = new Modifier(); obj1.p = 2; obj1.q = 3; obj1.cal(4, 5); obj2.p = 4; obj2.cal(4, 6); System.out.println(obj1.p + " " + obj2.q); } }

A. 6 14
B. 7 14
C. 14 6
D. 14 7
E. None of these
Answer» B. 7 14
Discussion
9.

What happens if constructor of class N is made private?

A. Any class can instantiate objects of class N
B. Inherited class can instantiate objects of class N
C. classes within the same package as class A can instantiate objects of class N
D. Objects of class N can be instantiated only within the class where it is declared
E. None of these
Answer» E. None of these
Discussion
10.

Can a class be declared with protected modifier?

A. False
B. True
C. NA
D. NA
E. NA
Answer» B. True
Discussion