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 is Classloader in Java?

1236

What is static block?

1143

What is difference between Heap and Stack Memory?

1063

What is difference between path and classpath variables?

1109

Name some OOPS Concepts in Java?

1087

What is ternary operator in java?

1077

What is the importance of main method in Java?

1073

What is an class?

1050

What is multi-catch block in java?

1092

What is anonymous inner class?

1092

What is overloading and overriding in java?

1242

What is the difference between JVM and JRE?

1122

What is static keyword?

1167

Can we have multiple public classes in a java source file?

1208

What is final keyword?

1176

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Un-Answered Questions { Core Java }

What happens when a thread cannot acquire a lock on an object in java programming?

1034

How to stop a thread in java? Explain about sleep () method in a thread?

1029

What is a boolean field?

971

Is java map thread safe?

979

What is sortedmap interface?

1010

Explain throw keyword in java?

1054

How do generics work in java?

1054

What is a boolean structure?

1098

What is singleton math?

1157

Explain about complier design(phases)

1095

What do you mean by collectors in java 8?

945

Why java is considered dynamic?

1185

What is the use of set in java?

1131

What are multiple inheritances? Is it supported by java?

966

can used Protected Class outside Function.?

1118

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