Set2

Question 1

For vs while

Answer 1

X28

Question 2

Pointers

Answer 2

X81

Question 3

Strings are immutable

Answer 3

X102 ,103

Question 4

Coupling

Answer 4

X150 ,151 ,152

Question 5

Garbage collection

Answer 5

X149

Question 6

Optional classes

Answer 6

X147

Question 7

Priority queue

Answer 7

X140

Question 8

Queue

Answer 8

X138

Question 9

Enums

Answer 9

X138

Question 10

Abstract class

Answer 10

X134

Question 11

UTF8

Answer 11

X128

Question 12

Serialization

Answer 12

X120

Question 13

Deserilization

Answer 13

X121

Question 14

Runnable interface

Answer 14

X111

Question 15

Dot operator

Answer 15

X101

Question 16

Big decimal

Answer 16

X88

Question 17

Marker interface

Answer 17

X173

Question 18

Can we override a private method

Answer 18

X174 ,175

Question 19

Can we override a static method

Answer 19

X176

Question 20

Does finally always executes in java

Answer 20

X177

Question 21

What methods does object class have?

Answer 21

X178

Question 22

How can you make a class immutable?

Answer 22

X179

Question 23

Singleton class

Answer 23

X180

Question 24

Explain collection hierarchy

Answer 24

X

Question 25

Why map doesn’t extend collection interface

Answer 25

X181

Question 26

Fail fast iterator

Answer 26

X182

Question 27

Fail safe iterator

Answer 27

X184

Question 28

Blocking queue

Answer 28

X183

Question 29

Synchronized collection vs concurrent collection

Answer 29

X185

Question 30

Is java is pass by value or reference?

Answer 30

X

Question 31

Map methods

Answer 31

X154
Put()
Get()
Remove ()
Containskey()
Size()
Keyset()
Values()

Question 32

Set

Answer 32

X155

Question 33

Set Methods

Answer 33

X156
Add()
Remove ()
Contains ()
Size ()
Is empty ()
Clear ()

Question 34

List methods

Answer 34

X158
Add()
Get()
Remove ()
Set()
Size()
Is empty ()
Clear ()
Indexof()
Contains ()

Question 35

Checked Exceptions

Answer 35

X187

Question 36

Unchecked Exceptions

Answer 36

X188

Question 37

Errors

Answer 37

X189

Question 38

Comparable

Answer 38

X190

Question 39

Comparator

Answer 39

X191

Question 40

Comparator

Answer 40

X191

Question 41

Comparable vs comparator

Answer 41

X192

Question 42

System.in vs out vs err

Answer 42

X16 ,17 ,18

Question 43

Generics

Answer 43

X21 ,49

Question 44

I/o streams

Answer 44

X22

Question 45

New vs Newinstance

Answer 45

X26

Question 46

While vs do while

Answer 46

X27

Question 47

File handling

Answer 47

X29

Question 48

Multi threading

Answer 48

X31

Question 49

JFrame

Answer 49

X32

Question 50

JLabel

Answer 50

X33