Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

How do you use parseint in java?

1028

What is nextint java?

1130

Why scanner is used in java?

1130

What are singleton services?

965

What is anti pattern in programming?

1011

What is considered an anti pattern?

980

Why should we use singleton pattern instead of static class?

973

What is singleton math?

1217

What is meant by singleton class?

1080

When would you use a static class?

1030

Why can't we use static class instead of singleton?

994

What is the difference between static class and normal class?

1086

Why is singleton instance static?

1042

How can we break singleton in java?

1017

Should database connections be singleton?

1015

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Un-Answered Questions { Core Java }

How many threads can I run java?

1176

Explain about instanceof operator in java?

1118

What are singleton services?

965

What is the purpose of using the java bean?

1102

Explain different forms of polymorphism?

1196

What is the difference between heap and stack memory?

1246

how to deploy tomcatserver to weblogic server? write d following steps?

2006

What is string intern in java?

1087

Tell me the latest versions in java related areas?

1136

Is an object null?

1029

What is the driver class?

1091

Can we assign null to double in java?

1076

What's the difference between int and integer in java?

1230

What is a numeric format?

1158

Why java is secure? Explain.

1117

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