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 do you mean by multithreaded program?

1024

What is finalize method?

1142

What is the default value of byte datatype in java?

950

Explain garbage collection in java?

993

Define jit compiler?

1153

What is java virtual machine and how it is considered in context of java’s platform independent feature?

1187

Variables used in a switch statement can be used with which datatypes?

1013

Difference between throw and throws?

1119

Define immutable object?

1073

Define inheritance?

1025

What is a instance variable?

1074

When throw keyword is used?

1086

Why packages are used?

5 1592

When parseint method can be used?

964

Define class?

1066

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Un-Answered Questions { Core Java }

Can a private method of a superclass be declared within a subclass?

1057

What is a top level class in java?

1049

What is the difference between final, finally and finalize()?

1172

Is age a discrete variable?

998

Explain differences between checked and unchecked exceptions in java?

1078

What is the method overriding?

1098

What are examples of modifiers?

1150

When to use runnable interface vs thread class in java?

996

What is a lightweight component?

1036

What is difference between length and length() method in java ?

1009

Is java hard to learn?

928

What are void pointers?

1317

What is array list in java?

1091

What are the six ways to use this keyword?

1074

What is thread pool? How can we create thread pool in java?

1089

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