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?

1285

Explain about abstract classes in java?

1091

What are reference variables in java?

1181

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

1074

State some situations where exceptions may arise in java?

1107

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

1088

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

1146

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

1184

What is constructor in java ?

1267

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

1184

Can we restart a dead thread in java?

1050

List out five keywords related to exception handling ?

1070

Explain what access modifiers can be used for variables?

1114

Can we synchronize static methods in java?

1151

Can we overload run() method in java?

1268

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Un-Answered Questions { Core Java }

What is a control variable example?

1081

Does sprintf allocate memory?

1165

What are the different types of garbage collectors in java?

1212

What will happen if a thrown exception is not handled?

1103

What is nan inf?

1179

What is immutable state?

1104

What is a class object?

1021

Does string isempty check for null?

1090

Explain the difference between hashmap and hashtable in java?

994

difference between byte stream class and character stream class?

4606

What are static methods?

1108

What are the rules for variable declaration?

1015

What is the difference between the prefix and postfix forms of the ++ operator?

1065

What is the difference between stored procedure & function?

1025

List some java keywords sun like c, c + + keywords?

1067

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