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?

1229

What is static block?

1134

What is difference between Heap and Stack Memory?

1056

What is difference between path and classpath variables?

1099

Name some OOPS Concepts in Java?

1079

What is ternary operator in java?

1071

What is the importance of main method in Java?

1060

What is an class?

1040

What is multi-catch block in java?

1084

What is anonymous inner class?

1085

What is overloading and overriding in java?

1234

What is the difference between JVM and JRE?

1102

What is static keyword?

1158

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

1200

What is final keyword?

1167

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Un-Answered Questions { Core Java }

How many threads can java run?

1125

Can a vector contain heterogenous objects?

1080

Explain super keyword in java.

1038

why would you use a synchronized block vs. Synchronized method? : Java thread

957

What is the use of arraylist class in java?

1086

What are voids?

970

What is string [] args?

1012

What is java full form?

1036

How do you find the independent variable?

1060

What is this keyword in java?

1039

Can we write a class without main method in java?

964

What is the difference between @before and @beforeclass annotation?

1111

Can we use synchronized block for primitives?

1074

Why you should not use singleton?

989

Where will it be used?

1946

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