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 interface is extended by awt event listeners?

1072

What is the relationship difference the canvas class and the graphics class?

1079

How does multithreading take place on a computer with a single cpu?

1025

What is the purpose of the enableevents() method?

1063

What is the difference between a choice and a list?

1093

What checkbox method allows you to tell if a checkbox is checked?

1020

What are latest features introduced with java 8?

1107

Distinguish between a predicate and a function?

1008

What are the differences between heap and stack memory?

1102

Explain public static void main(string args[]).

1194

What is singleton class and how can we make a class singleton?

1113

Why vector class is used?

1007

What are constructors in java?

1131

Can we serialize static variables in java?

1110

How to make object serializable in java?

1002

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Un-Answered Questions { Core Java }

When arithmeticexception is thrown?

1047

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

1009

Can we convert integer to string in java?

1064

What are the two ways to create a thread?

1023

Can a boolean be null java?

993

What are the legal operands of the instanceof operator?

1042

How can u increase the heap size in the memory?

1037

What is the purpose of an interface?

1060

What are different types of arrays?

1027

Can an integer be a string?

1081

What are basic keywords?

1050

What is the difference between size and length in java?

990

What is difference between static and final?

1085

Explain what access modifiers can be used for variables?

1074

Explain about doubly linked list

1049

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