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 platform independence? What is an interface?

1040

What is the final access modifier in java?

1088

Which one will take more memory: an int or integer?

1246

What are the differences between forwarding () method and sendredirect() methods?

1117

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

1127

What is a java applet? What is an interface?

1105

What is a jit compiler?

1145

What is the difference between a factory and abstract factory pattern?

1149

Can we have more than one package statement in the source file?

1064

What’s the difference between unit, integration and functional testing?

1118

How would you format a date in java? I.e. In the ddmmyyy format?

1384

How do you reverse a string in java without using string buffer?

1105

Why we used vector class?

1076

What are the different types of multitasking?

1111

What are java annotations?

1170

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Un-Answered Questions { Core Java }

What are locale settings?

996

What is structure of java heap? What is perm gen space in heap?

1131

What is java english?

1009

How to avoid memory leak in java?

1145

What are the differences between graph and tree?

1128

What is indexof in java?

1012

How do you check whether the list is empty or not in java?

986

What is jit compiler in java?

1120

How is hashcode calculated in java?

1043

What are inner classes or non static nested classes in java?

1183

Is java a software?

961

What's the access scope of protected access specifier?

1044

What does snprintf return?

1014

What is the formula to calculate percentage?

1020

What is callable java?

987

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