1. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
System.out.println(“Hello, World!”);
}
}
a) Hello, World
b) Hello, World!
c) Compilation Error
d) Runtime Error
Answer: b) Hello, World!
2. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
int y = 10;
System.out.println(x + y);
}
}
a) 15
b) 5 10
c) 510
d) Compilation Error
Answer: a) 15
3. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
System.out.println(x++);
System.out.println(x);
}
}
a) 5 5
b) 6 6
c) 5 6
d) Compilation Error
Answer: c) 5 6
4. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
System.out.println(++x);
}
}
a) 5
b) 6
c) 5 6
d) Compilation Error
Answer: b) 6
5. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
System.out.println(x–);
System.out.println(x);
}
}
a) 5 5
b) 4 4
c) 5 4
d) Compilation Error
Answer: c) 5 4
6. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
System.out.println(–x);
}
}
a) 5
b) 4
c) 5 4
d) Compilation Error
Answer: b) 4
7. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
x += 10;
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) Compilation Error
Answer: c) 15
8. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
x -= 5;
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) Compilation Error
Answer: a) 5
9. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
x *= 2;
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) Compilation Error
Answer: b) 10
10. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
x /= 2;
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) Compilation Error
Answer: a) 5
11. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
x %= 3;
System.out.println(x);
}
}
a) 1
b) 2
c) 3
d) Compilation Error
Answer: b) 1
12. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
System.out.println(x > 5);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: a) true
13. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
System.out.println(x < 5);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: b) false
14. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
System.out.println(x == 10);
}
}
a) true
b) false
c) 10
d) Compilation Error
Answer: a) true
15. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
System.out.println(x != 10);
}
}
a) true
b) false
c) 10
d) Compilation Error
Answer: b) false
16. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
System.out.println(x >= 10);
}
}
a) true
b) false
c) 10
d) Compilation Error
Answer: a) true
17. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
System.out.println(x <= 5);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: b) false
18. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
int y = 10;
System.out.println(x > y);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: b) false
19. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
int y = 10;
System.out.println(x < y);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: a) true
20. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
int y = 5;
System.out.println(x == y);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: a) true
21. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
int y = 10;
System.out.println(x != y);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: a) true
22. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
int y = 10;
System.out.println(x >= y);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: b) false
23. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 10;
int y = 5;
System.out.println(x <= y);
}
}
a) true
b) false
c) 10
d) Compilation Error
Answer: b) false
24. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
int y = 5;
System.out.println(x == y && x > 0);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: a) true
25. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
int y = 10;
System.out.println(x < y || x > 0);
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: a) true
26. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
int y = 10;
System.out.println(!(x > y));
}
}
a) true
b) false
c) 5
d) Compilation Error
Answer: a) true
27. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
if (x > 0) {
System.out.println(“Positive”);
}
}
}
a) Positive
b) Negative
c) 5
d) Compilation Error
Answer: a) Positive
28. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = -5;
if (x > 0) {
System.out.println(“Positive”);
} else {
System.out.println(“Negative”);
}
}
}
a) Positive
b) Negative
c) -5
d) Compilation Error
Answer: b) Negative
29. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
if (x > 0) {
System.out.println(“Positive”);
} else {
System.out.println(“Negative”);
}
}
}
a) Positive
b) Negative
c) 5
d) Compilation Error
Answer: a) Positive
30. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
if (x > 0) {
System.out.println(“Positive”);
} else if (x < 0) {
System.out.println(“Negative”);
} else {
System.out.println(“Zero”);
}
}
}
a) Positive
b) Negative
c) Zero
d) Compilation Error
Answer: a) Positive
31. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = -5;
if (x > 0) {
System.out.println(“Positive”);
} else if (x < 0) {
System.out.println(“Negative”);
} else {
System.out.println(“Zero”);
}
}
}
a) Positive
b) Negative
c) Zero
d) Compilation Error
Answer: b) Negative
32. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 0;
if (x > 0) {
System.out.println(“Positive”);
} else if (x < 0) {
System.out.println(“Negative”);
} else {
System.out.println(“Zero”);
}
}
}
a) Positive
b) Negative
c) Zero
d) Compilation Error
Answer: c) Zero
33. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 5;
switch (x) {
case 1:
System.out.println(“One”);
break;
case 2:
System.out.println(“Two”);
break;
case 3:
System.out.println(“Three”);
break;
case 4:
System.out.println(“Four”);
break;
case 5:
System.out.println(“Five”);
break;
default:
System.out.println(“Invalid”);
}
}
}
a) One
b) Two
c) Three
d) Five
Answer: d) Five
34. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 3;
switch (x) {
case 1:
System.out.println(“One”);
break;
case 2:
System.out.println(“Two”);
break;
case 3:
System.out.println(“Three”);
break;
default:
System.out.println(“Invalid”);
}
}
}
a) One
b) Two
c) Three
d) Invalid
Answer: c) Three
35. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 6;
switch (x) {
case 1:
System.out.println(“One”);
break;
case 2:
System.out.println(“Two”);
break;
case 3:
System.out.println(“Three”);
break;
default:
System.out.println(“Invalid”);
}
}
}
a) One
b) Two
c) Three
d) Invalid
Answer: d) Invalid
36. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 2;
int y = 0;
switch (x) {
case 1:
y = 1;
break;
case 2:
y = 2;
break;
case 3:
y = 3;
break;
default:
y = 4;
}
System.out.println(y);
}
}
a) 0
b) 1
c) 2
d) 3
Answer: c) 2
37. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 4;
int y = 0;
switch (x) {
case 1:
y = 1;
break;
case 2:
y = 2;
break;
case 3:
y = 3;
break;
default:
y = 4;
}
System.out.println(y);
}
}
a) 0
b) 1
c) 2
d) 4
Answer: d) 4
38. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 2;
switch (x) {
case 1:
System.out.println(“One”);
break;
case 2:
System.out.println(“Two”);
case 3:
System.out.println(“Three”);
break;
default:
System.out.println(“Invalid”);
}
}
}
a) One
b) Two Three
c) Two
d) Invalid
Answer: b) Two Three
39. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 0;
for (int i = 0; i< 5; i++) {
x += i;
}
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) 20
Answer: b) 10
40. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 0;
for (int i = 1; i<= 5; i++) {
x += i;
}
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) 20
Answer: c) 15
41. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 1;
for (int i = 1; i<= 3; i++) {
x *= i;
}
System.out.println(x);
}
}
a) 3
b) 6
c) 9
d) 1
Answer: b) 6
42. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 0;
int i = 0;
while (i< 5) {
x += i;
i++;
}
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) 20
Answer: b) 10
43. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 0;
int i = 1;
while (i<= 5) {
x += i;
i++;
}
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) 20
Answer: c) 15
44. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 1;
int i = 1;
while (i<= 3) {
x *= i;
i++;
}
System.out.println(x);
}
}
a) 3
b) 6
c) 9
d) 1
Answer: b) 6
45. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 0;
int i = 0;
do {
x += i;
i++;
} while (i< 5);
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) 20
Answer: b) 10
46. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 0;
int i = 1;
do {
x += i;
i++;
} while (i<= 5);
System.out.println(x);
}
}
a) 5
b) 10
c) 15
d) 20
Answer: c) 15
47. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 1;
int i = 1;
do {
x *= i;
i++;
} while (i<= 3);
System.out.println(x);
}
}
a) 3
b) 6
c) 9
d) 1
Answer: b) 6
48. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 0;
for (int i = 1; i<= 5; i++) {
if (i % 2 == 0) {
continue;
}
x += i;
}
System.out.println(x);
}
}
a) 9
b) 10
c) 15
d) 5
Answer: a) 9
49. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 0;
for (int i = 1; i<= 5; i++) {
if (i == 3) {
break;
}
x += i;
}
System.out.println(x);
}
}
a) 3
b) 6
c) 10
d) 5
Answer: a) 3
50. What will be the output of the following code?
java
public class Test {
public static void main(String[] args) {
int x = 1;
for (int i = 1; i<= 3; i++) {
x *= i;
}
System.out.println(x);
}
}
a) 1
b) 6
c) 9
d) 3
Answer: b) 6
51. What will be the output of the following code?
java
class A {
void display() {
System.out.println(“A”);
}
}
class B extends A {
void display() {
System.out.println(“B”);
}
public static void main(String[] args) {
B obj = new B();
obj.display();
}
}
a) A
b) B
c) AB
d) BA
Answer: b) B
52. What will be the output of the following code?
java
class A {
A() {
System.out.println(“A”);
}
}
class B extends A {
B() {
System.out.println(“B”);
}
public static void main(String[] args) {
B obj = new B();
}
}
a) A
b) B
c) AB
d) BA
Answer: c) AB
53. What will be the output of the following code?
java
class A {
static void display() {
System.out.println(“A”);
}
}
class B extends A {
static void display() {
System.out.println(“B”);
}
public static void main(String[] args) {
A obj = new B();
obj.display();
}
}
a) A
b) B
c) AB
d) BA
Answer: a) A
54. What will be the output of the following code?
java
class A {
void display() {
System.out.println(“A”);
}
}
class B extends A {
void display() {
System.out.println(“B”);
}
}
class C extends B {
void display() {
System.out.println(“C”);
}
public static void main(String[] args) {
C obj = new C();
obj.display();
}
}
a) A
b) B
c) C
d) ABC
Answer: c) C
55. What will be the output of the following code?
java
class A {
A() {
System.out.println(“A”);
}
}
class B extends A {
B() {
System.out.println(“B”);
}
}
class C extends B {
C() {
System.out.println(“C”);
}
public static void main(String[] args) {
C obj = new C();
}
}
a) A
b) AB
c) ABC
d) CBA
Answer: c) ABC
56. What will be the output of the following code?
java
class A {
static void display() {
System.out.println(“A”);
}
}
class B extends A {
static void display() {
System.out.println(“B”);
}
}
class C extends B {
static void display() {
System.out.println(“C”);
}
public static void main(String[] args) {
A obj = new C();
obj.display();
}
}
a) A
b) B
c) C
d) Compilation Error
Answer: a) A
57. What will be the output of the following code?
java
interface A {
void display();
}
class B implements A {
public void display() {
System.out.println(“B”);
}
public static void main(String[] args) {
B obj = new B();
obj.display();
}
}
a) A
b) B
c) AB
d) Compilation Error
Answer: b) B
58. What will be the output of the following code?
java
interface A {
void display();
}
interface B extends A {
void show();
}
class C implements B {
public void display() {
System.out.println(“Display”);
}
public void show() {
System.out.println(“Show”);
}
public static void main(String[] args) {
C obj = new C();
obj.display();
obj.show();
}
}
a) Display
b) Show
c) Display Show
d) Compilation Error
Answer: c) Display Show
59. What will be the output of the following code?
java
interface A {
default void display() {
System.out.println(“A”);
}
}
class B implements A {
public static void main(String[] args) {
B obj = new B();
obj.display();
}
}
a) A
b) Compilation Error
c) Runtime Error
d) None of the above
Answer: a) A
60. What will be the output of the following code?
java
interface A {
default void display() {
System.out.println(“A”);
}
}
interface B {
default void display() {
System.out.println(“B”);
}
}
class C implements A, B {
public void display() {
A.super.display();
}
public static void main(String[] args) {
C obj = new C();
obj.display();
}
}
a) A
b) B
c) Compilation Error
d) Runtime Error
Answer: a) A
61. What will be the output of the following code?
java
class Test {
static void display() {
System.out.println(“Static method”);
}
void show() {
System.out.println(“Instance method”);
}
public static void main(String[] args) {
Test obj = new Test();
obj.display();
obj.show();
}
}
a) Static method Instance method
b) Instance method Static method
c) Compilation Error
d) Runtime Error
Answer: a) Static method Instance method
62. What will be the output of the following code?
java
class Test {
static void display() {
System.out.println(“Static method”);
}
void show() {
System.out.println(“Instance method”);
}
public static void main(String[] args) {
Test.display();
}
}
a) Static method
b) Instance method
c) Compilation Error
d) Runtime Error
Answer: a) Static method
63. What will be the output of the following code?
java
class Test {
static void display() {
System.out.println(“Static method”);
}
void show() {
System.out.println(“Instance method”);
}
public static void main(String[] args) {
Test obj = new Test();
obj.show();
}
}
a) Static method
b) Instance method
c) Compilation Error
d) Runtime Error
Answer: b) Instance method
64. What will be the output of the following code?
java
class Test {
static {
System.out.println(“Static block”);
}
{
System.out.println(“Instance block”);
}
Test() {
System.out.println(“Constructor”);
}
public static void main(String[] args) {
new Test();
}
}
a) Static block
b) Instance block
c) Constructor
d) Static block Instance block Constructor
Answer: d) Static block Instance block Constructor
65. What will be the output of the following code?
java
class Test {
static {
System.out.println(“Static block”);
}
{
System.out.println(“Instance block”);
}
Test() {
System.out.println(“Constructor”);
}
public static void main(String[] args) {
new Test();
new Test();
}
}
a) Static block Instance block Constructor Instance block Constructor
b) Instance block Constructor Instance block Constructor
c) Static block Instance block Constructor
d) Instance block Constructor
Answer: a) Static block Instance block Constructor Instance block Constructor
66. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
public static void main(String[] args) {
Test obj = new Test();
System.out.println(obj.x);
System.out.println(obj.y);
}
}
a) 10 20
b) 20 10
c) Compilation Error
d) Runtime Error
Answer: a) 10 20
67. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
public static void main(String[] args) {
System.out.println(Test.x);
System.out.println(new Test().y);
}
}
a) 10 20
b) 20 10
c) Compilation Error
d) Runtime Error
Answer: a) 10 20
68. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
void display() {
System.out.println(x);
System.out.println(y);
}
public static void main(String[] args) {
new Test().display();
}
}
a) 10 20
b) 20 10
c) Compilation Error
d) Runtime Error
Answer: a) 10 20
69. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
void display() {
System.out.println(x);
System.out.println(y);
}
public static void main(String[] args) {
Test obj1 = new Test();
Test obj2 = new Test();
obj1.display();
obj2.display();
}
}
a) 10 20 10 20
b) 20 10 20 10
c) Compilation Error
d) Runtime Error
Answer: a) 10 20 10 20
70. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
static void display() {
System.out.println(x);
}
public static void main(String[] args) {
display();
}
}
a) 10
b) 20
c) Compilation Error
d) Runtime Error
Answer: a) 10
71. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
static void display() {
System.out.println(x);
}
public static void main(String[] args) {
Test.display();
}
}
a) 10
b) 20
c) Compilation Error
d) Runtime Error
Answer: a) 10
72. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
static void display() {
System.out.println(x);
}
public static void main(String[] args) {
new Test().display();
}
}
a) 10
b) 20
c) Compilation Error
d) Runtime Error
Answer: a) 10
73. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
void display() {
System.out.println(x);
System.out.println(y);
}
public static void main(String[] args) {
new Test().display();
}
}
a) 10 20
b) 20 10
c) Compilation Error
d) Runtime Error
Answer: a) 10 20
74. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
void display() {
System.out.println(x);
System.out.println(y);
}
public static void main(String[] args) {
Test obj = new Test();
obj.display();
}
}
a) 10 20
b) 20 10
c) Compilation Error
d) Runtime Error
Answer: a) 10 20
75. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
static void display() {
System.out.println(x);
}
public static void main(String[] args) {
Test.display();
}
}
a) 10
b) 20
c) Compilation Error
d) Runtime Error
Answer: a) 10
76. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
static void display() {
System.out.println(x);
}
public static void main(String[] args) {
Test obj = new Test();
obj.display();
}
}
a) 10
b) 20
c) Compilation Error
d) Runtime Error
Answer: a) 10
77. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
static void display() {
System.out.println(x);
}
public static void main(String[] args) {
new Test().display();
}
}
a) 10
b) 20
c) Compilation Error
d) Runtime Error
Answer: a) 10
78. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
static void display() {
System.out.println(x);
}
public static void main(String[] args) {
Test obj = new Test();
obj.display();
}
}
a) 10
b) 20
c) Compilation Error
d) Runtime Error
Answer: a) 10
79. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
void display() {
System.out.println(x);
System.out.println(y);
}
public static void main(String[] args) {
Test obj = new Test();
obj.display();
}
}
a) 10 20
b) 20 10
c) Compilation Error
d) Runtime Error
Answer: a) 10 20
80. What will be the output of the following code?
java
class Test {
static int x = 10;
int y = 20;
void display() {
System.out.println(x);
System.out.println(y);
}
public static void main(String[] args) {
new Test().display();
}
}
a) 10 20
b) 20 10
c) Compilation Error
d) Runtime Error
Answer: a) 10 20