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