Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

What are synchronized blocks in java?

1 1297

Explain about abstract classes in java?

1 1093

What are reference variables in java?

1 1192

Explain about method local inner classes or local inner classes in java?

1 1077

State some situations where exceptions may arise in java?

1 1111

Is it possible for yielded thread to get chance for its execution again ?

1 1090

Difference between this() and super() in java ?

1 1151

Explain java coding standards for classes or java coding conventions for classes?

1 1190

What is constructor in java ?

1 1280

Difference between ‘>>’ and ‘>>>’ operators in java?

1 1190

Can we restart a dead thread in java?

1 1057

List out five keywords related to exception handling ?

1 1077

Explain what access modifiers can be used for variables?

1 1114

Can we synchronize static methods in java?

1 1158

Can we overload run() method in java?

1 1281

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Un-Answered Questions { Core Java }

What do you mean by an interface in java?

1084

What is a constructor overloading in java?

1114

Realized?

2239

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

2650

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

1110

What is java string pool?

1068

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

1113

Write a program to print count of empty strings in java 8?

1071

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

1085

explain different ways of using thread? : Java thread

1068

What is parsing in java?

1022

How to sort array in descending order in java?

976

Explain public static void main(string args[]) in java.

1053

How to create a base64 decoder in java8?

1119

What is a classloader in java?

1072

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