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 anti pattern in java?

1032

Can inner class be public in java?

1074

What is a private class in java?

1121

Which class cannot be a subclass in java?

1076

What is public/private protected in java?

1085

What are the two categories of data types in the java programming language?

1032

Does java isempty check for null?

1040

What is percentage in java?

1057

What loop means?

1003

What is a boolean expression in java?

1075

How do you break a loop?

1035

How many bytes is a char in java?

1059

What is the maximum size of a string in java?

1175

Is 0 true or false in java?

1034

Is char a data type in java?

1016

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Un-Answered Questions { Core Java }

extending thread class or implementing runnable interface. Which is better? : Java thread

1044

What is abstract class constructor called?

1077

What is java and its types?

1167

Is string is a data type in java?

1117

Explain different types of thread priorities ?

1136

What do you understand by copy constructor in java?

982

What is the purpose of garbage collection in java? When is it used?

1091

Can we start a thread twice in java?

1041

If a class is declared without any access modifiers, where can the class be accessed?

1105

What is public/private protected in java?

1085

What is a heavyweight component?

1072

What is preflight request?

1092

What is the purpose of extern variable?

1058

What are the different collection views provided by maps?

1042

What is a finally block? Is there a case when finally will not execute?

1153

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