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Core Java Interview Questions
Questions Answers Views Company eMail

What is method Overloading in the perspective of OOPS?

6 10965

What is method Overriding in the perspective of OOPS?

TCS,

4 8595

What is numeric promotion?

1 5104

What is persistence ?

2 5994

What is procedure overloading?

1 2391

What is protected and friendly?

1 5697

What is serializable interface?

Infosys, Probity Soft, Seed Infotech,

13 34139

What is the difference between serialization and deserialization?

ABC,

3 17136

What is singleton class?

3i Infotech, 7 Seas, ABC, Amdocs, Cap Gemini, Oracle, Persistent, TCS, Techforza,

16 73172

What is synchronization? How it can be achieved?

2 12145

What is the % operator?

2 5378

What is Collection interface?

Zensar,

1 6188

What is Collections API?

1 4799

What is the Dictionary class?

1 4409

What is the GregorianCalendar class?

HCL,

2 6188


Post New Core Java Questions

Un-Answered Questions { Core Java }

explain different ways of using thread? : Java thread

1068


What are the differences between heap and stack memory in java?

1114


What is an object in java and how is it created?

1110


How to create a base64 decoder in java8?

1119


Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2651


Write a program to find the whether a number is an Armstrong number or not?

1085


What is the difference between equals() and == in java?

1023


Realized?

2239


What is a constructor overloading in java?

1115


What is a classloader in java?

1072


What is parsing in java?

1022


What do you mean by an interface in java?

1084


What is java string pool?

1068


Is minecraft 1.15 out?

1024


What is the difference between break and continue statements?

1107