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 to create an interface?

1085

Why convert an applet to an application?

1104

How to use Media tracker Class.

1128

How to use string tokenizer class.

1207

Explain the overview of UDP messaging.

1129

How to create com object in Java?

1076

Explain the Propertie sof class?

1050

When object is created and destroyed?

1103

Explain the JDB in depth & command line.

1016

Give example to differentiate between call by value and call by reference.

TCS,

1060

Can you declare a private method as static?

TCS,

1154

How do you classify Dialog Box?

CGI,

1119

What happens when main () method is declared as private?

Tech Mahindra,

1145

If try block is successfully executed, Then Is Finally block executed?

PUCIT,

1085

What is final, finally, finalize?

1109

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Un-Answered Questions { Core Java }

Is list thread safe in java?

921

How objects are stored in java?

1033

Does windows 10 need java?

1047

what is use of functional interface in java 8?

1019

What is the difference between Error, defect,fault, failure and mistake?

1205

What is preflight request?

1018

Explain runtime exceptions?

1177

How do you identify independent and dependent variables?

1008

Name few java.lang classes introduced with java 8 ?

987

What is the difference between Java1.4 and Java1.5

2315

Why constructor has no return type?

1099

What is a boolean output?

965

Can a class declared as private be accessed outside it’s package?

1013

Is there any way to skip finally block of exception even if some exception occurs in the exception block?

1072

What are classloaders?

1020

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