Screen test on Java
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Question 1 of 100
1. Question
1. Who is known as father of Java Programming Language?
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Question 2 of 100
2. Question
2. In java control statements break, continue, return, try-catch-finally and assert belongs to?
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Question 3 of 100
3. Question
3. Which provides runtime environment for java byte code to be executed?
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Question 4 of 100
4. Question
4. What is byte code in Java?
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Question 5 of 100
5. Question
5. Which of the following are not Java keywords ?
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Question 6 of 100
6. Question
6. Which of these having highest precedence?
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Question 7 of 100
7. Question
7. Which of these is returned by operator ‘&’ ?
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Question 8 of 100
8. Question
8. Data type long literals are appended by _____
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Question 9 of 100
9. Question
9.Which variables are created when an object is created with the use of the keyword ‘new’ and destroyed when the object is destroyed?
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Question 10 of 100
10. Question
10. Java language was initially called as ________
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Question 11 of 100
11. Question
11. What is garbage collection in the context of Java?
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Question 12 of 100
12. Question
12. Which one is a template for creating different objects ?
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Question 13 of 100
13. Question
13. Which symbol is used to contain the values of automatically initialized arrays?
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Question 14 of 100
14. Question
14. Which one is true about a constructor ?
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Question 15 of 100
15. Question
15. Which of these operators is used to allocate memory to array variable in Java?
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Question 16 of 100
16. Question
16. Which of these is not a bitwise operator?
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Question 17 of 100
17. Question
17. Which of these is returned by Greater Than, Less Than and Equal To (i.e., Relational) operator ?
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Question 18 of 100
18. Question
18. Which statement transfer execution to different parts of your code based on the value of an expression?
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Question 19 of 100
19. Question
19. Modulus operator (%) can be applied to which of these?
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Question 20 of 100
20. Question
20. What feature of OOP has a super-class sub-class concept?
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Question 21 of 100
21. Question
21. Which of the following are not the methods of the Thread class?
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Question 22 of 100
22. Question
22. Division operator has ____ precedence over multiplication operator
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Question 23 of 100
23. Question
23. What is the full form of JVM ?
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Question 24 of 100
24. Question
24. Which of the following are not Java modifiers?
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Question 25 of 100
25. Question
25. In Java code, the line that begins with /* and ends with */ is known as?
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Question 26 of 100
26. Question
26. Select Odd one out from these about local variables.
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Question 27 of 100
27. Question
27. Which one of the following is Equality operator in Java?
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Question 28 of 100
28. Question
28. Which one of the following is an Unary operator in Java?
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Question 29 of 100
29. Question
29. What is the default encoding for an OutputStreamWriter?
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Question 30 of 100
30. Question
30. What do you mean by >>> operator in Java?
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Question 31 of 100
31. Question
31. Which of the following is not an operator in Java?
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Question 32 of 100
32. Question
32. Which type of the following operators has more precedance in Java?
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Question 33 of 100
33. Question
33. Find the output of below given programming
public class CppBuzz {
public static void main(String[] args){
int a = 5+5*2+2*2+(2*3);
System.out.println(a);
}
}
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Question 34 of 100
34. Question
34.Find the output of below given programming
public class CppBuzz {
public static void main(String[] args){
int a = 10;
System.out.println(a*a–);
}
}
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Question 35 of 100
35. Question
35.Which of the following modifiers can be used for a variable so that it can be accessed by any thread or a part of a program?
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Question 36 of 100
36. Question
36.Find the output of below given programming
public class CppBuzz {
public static void main(String[] args){
int a = 10;
System.out.println(++a*++a);
}
}
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Question 37 of 100
37. Question
37.Find the output of below given programming
public class CppBuzz {
public static void main(String[] args){
int a = 10;
System.out.println(++a*a++);
}
}
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Question 38 of 100
38. Question
38.Find the output of below given programming
public class CppBuzz {
public static void main(String[] args){
int a = 10;
System.out.println(a++*a++);
}
}
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Question 39 of 100
39. Question
39.Find the output of below given programming
public class CppBuzz {
public static void main(String[] args){
int a = 10;
System.out.println(a*a++);
}
}
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Question 40 of 100
40. Question
40.In Iterator, hasMoreElements() method of Enumeration has been changed to:
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Question 41 of 100
41. Question
41.Find the output of below given programming
public class MyClass {
public static void main(String[] args){
int a = 10;
System.out.println(a++++);
}
}
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Question 42 of 100
42. Question
42.Find the output of below given programming
public class MyClass {
public static void main(String[] args){
int a = 10;
System.out.println(++a++);
}
}
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Question 43 of 100
43. Question
43.Find the output of below given programming
public class Main
{
private int a;
public Main(){
}
public Main(int temp){
a = -10;
}
public static void main(String[] args) {
Main obj = new Main();
System.out.println(obj.a);
}
}
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Question 44 of 100
44. Question
44.Find the output of below given programming
public class Main
{
private int a;
public Main(){
a = -10;
}
public static void main(String[] args) {
Main obj = new Main();
System.out.println(obj.a);
}
}
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Question 45 of 100
45. Question
45. Find the output of below given programming
public class Main
{
public static void main(String[] args) {
int arr[] = {‘a’,’b’,’c’,’d’,’e’};
System.out.print(arr);
}
}
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Question 46 of 100
46. Question
46. Find the output of below given programming
public class Main
{
public static void main(String[] args) {
int arr[] = {‘a’,’b’,’c’,’d’,’e’};
for(int i = 0 ; i<5; i++){
System.out.print(” “+ (char)arr[i]);
}
}
}
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Question 47 of 100
47. Question
47. Find the output of below given programming
public class Main
{
public static void main(String[] args) {
int arr[] = {‘a’,’b’,’c’,’d’,’e’};
for(int i = 0 ; i<5; i++){
System.out.print(” ” + arr[i]);
}
}
}
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Question 48 of 100
48. Question
48.Find the output of below given programming
public class Main
{
public static void main(String[] args) {
int arr[] = {1,2,3,4,5};
int count = 0;
for(int i = 0 ; i<5; i++ ){
if(arr[i]%2==0)
arr[i] *= 2;
System.out.print(arr[i]);
}
}
}
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Question 49 of 100
49. Question
49.Find the output of below given programming
public class Main
{
public static void main(String[] args) {
int arr[] = {1,2,3,4,5};
int count = 0;
for(int i = 0 ; i<5; i++ ){
if(arr[i]%2==0)
count++;
}
System.out.print(count);
}
}
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Question 50 of 100
50. Question
50. Arrays is a group of similar type of datatype?
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Question 51 of 100
51. Question
51. What is correct sequence of execution of any Java program?
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Question 52 of 100
52. Question
52. Java has 5 phases, Editing, Compilation, Loading, Verification & Execution. Which of the following unit is responsible for execution?
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Question 53 of 100
53. Question
53.Find the output of below given programming
public class CppBuzz {
public static void main(String args[]) {
int a =10;
String b = “10+10”;
System.out.println(a+b);
}
}
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Question 54 of 100
54. Question
54.Find the output of below given programming
public class Main
{
public static void main(String[] args) {
String str = “1234”;
int a = Integer.parseInt(str);
System.out.println(a);
}
}
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Question 55 of 100
55. Question
55. Can we call non static methods of a class by static methods of a class without creating object?
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Question 56 of 100
56. Question
56.Find the output of below given programming
public class Main
{
public static int sum(int a, int b){
if(a+b>1)
return 0;
System.out.print(a+b);
return a+b;
}
public static void main(String[] args) {
System.out.println(sum(1, sum(0,1)));
}
}
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Question 57 of 100
57. Question
57.Find the output of below given programming
public class Main
{
public static int sum(int a, int b){
if(a+b>10)
return 0;
System.out.print(a+b);
return a+b;
}
public static void main(String[] args) {
System.out.println(sum(1, sum(0,1)));
}
}
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Question 58 of 100
58. Question
58.Find the output of below given programming
public class Main
{
public static int sum(int a, int b){
System.out.print(a+””+b);
return a+b;
}
public static void main(String[] args) {
System.out.println(sum(3, sum(1,2)));
}
}
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Question 59 of 100
59. Question
59.Find the output of below given programming
public class Main
{
public static int sum(int a, int b){
System.out.print(a+””+b);
return a+b;
}
public static void main(String[] args) {
System.out.println(sum(sum(1,2),3));
}
}
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Question 60 of 100
60. Question
60.Find the output of below given programming
public class Main
{
public static int sum(int a, int b){
return a+b;
}
public static void main(String[] args) {
System.out.println(sum(sum(1,2),3));
}
}
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Question 61 of 100
61. Question
61.Find the output of below given programming
public class Main
{
public void sum(int a, int b){
System.out.print(a+b);
}
public static void main(String[] args) {
sum(0,0);
sum(-1,-1);
}
}
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Question 62 of 100
62. Question
62.Find the output of below given programming
public class Main
{
public static void sum(int a, int b){
System.out.print(a+b);
}
public static void main(String[] args) {
sum(0,0);
sum(-1,-1);
}
}
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Question 63 of 100
63. Question
63.Find the output of below given programming
public class Main
{
public static void main(String[] args) {
final int a;
a = 5;
a = 10;
System.out.println(a);
}
}
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Question 64 of 100
64. Question
64. Which of the following option leads to the portability and security of Java?
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Question 65 of 100
65. Question
65. Which of the following is not a Java features?
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Question 66 of 100
66. Question
66. The \u0021 article referred to as a
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Question 67 of 100
67. Question
67. Which of the following is a valid declaration of a char?
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Question 68 of 100
68. Question
68. What is the return type of the hashCode() method in the Object class?
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Question 69 of 100
69. Question
69. Which of the following is a valid long literal?
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Question 70 of 100
70. Question
70. What does the expression float a = 35 / 0 return?
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Question 71 of 100
71. Question
71 What will be the output of the following program?
public class Test {
public static void main(String[] args) {
int count = 1;
while (count <= 15) {
System.out.println(count % 2== 1 ? “***” : “+++++”);
++count;
} // end while
} // end main
}
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Question 72 of 100
72. Question
72. Which of the following tool is used to generate API documentation in HTML format from doc comments in source code?
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Question 73 of 100
73. Question
73. Which of the following creates a List of 3 visible items and multiple selections abled?
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Question 74 of 100
74. Question
74. Which of the following for loop declaration is not valid?
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Question 75 of 100
75. Question
75. Which method of the Class.class is used to determine the name of a class represented by the class object as a String?
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Question 76 of 100
76. Question
76.In which process, a local variable has the same name as one of the instance variables?
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Question 77 of 100
77. Question
77. Which of the following is true about the anonymous inner class?
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Question 78 of 100
78. Question
78. Which package contains the Random class?
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Question 79 of 100
79. Question
79. What do you mean by nameless objects?
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Question 80 of 100
80. Question
80. An interface with no fields or methods is known as a ______.
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Question 81 of 100
81. Question
81. Which of the following is an immediate subclass of the Panel class?
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Question 82 of 100
82. Question
82. TreeSet internally uses that one to store elements?
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Question 83 of 100
83. Question
83. Which option is false about the final keyword?
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Question 84 of 100
84. Question
84. Which of these classes are the direct subclasses of the Throwable class?
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Question 85 of 100
85. Question
85. What do you mean by chained exceptions in Java?
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Question 86 of 100
86. Question
86. In which memory a String is stored, when we create a string using new operator?
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Question 87 of 100
87. Question
87. What is the use of the intern() method?
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Question 88 of 100
88. Question
88. Which of the following is a marker interface?
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Question 89 of 100
89. Question
89. Which of the following is a reserved keyword in Java?
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Question 90 of 100
90. Question
90. Which keyword is used for accessing the features of a package?
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Question 91 of 100
91. Question
91. In java, jar stands for_____.
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Question 92 of 100
92. Question
92. What will be the output of the following program?
publicclass Test2 {
- public static void main(String[] args) {
- StringBuffer s1 = new StringBuffer(“Complete”);
- setCharAt(1,’i’);
- setCharAt(7,’d’);
- out.println(s1);
- }
- }
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Question 93 of 100
93. Question
93. Which of the following is false?
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Question 94 of 100
94. Question
94. What is the use of \w in regex?
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Question 95 of 100
95. Question
95. Which of the given methods are of Object class?
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Question 96 of 100
96. Question
96. Which of the following is a valid syntax to synchronize the HashMap?
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Question 97 of 100
97. Question
97. What is the initial quantity of the ArrayList list?
ArrayList list = new ArrayList(); -
Question 98 of 100
98. Question
98. Which of the following is a mutable class in java?
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Question 99 of 100
99. Question
99. In character stream I/O, a single read/write operation performs _____.
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Question 100 of 100
100. Question
100.If a thread goes to sleep