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Core Java Interview Questions
Questions Answers Views Company eMail

what is ennumaration?

Amdocs,

2 6381

what is difference between servletconfig and servletcontext?

Amdocs,

3 6465

what is custom tags with example?

Amdocs,

3 5243

what is connection pooling with example?

Amdocs,

3 9860

what is the use of bean managed and container managed with example?

EDS,

1483

what is difference between type 4 driver and type 1 driver?

CMC, CTS, IBM, JK Technosoft, Napier Healthcare,

2 12412

what is difference between prepare stetement and callable starement with example?

CMC,

1 4461

what is the use of abstract class and interface with example?

Cycore, DNS, Technoram,

2 13590

what is overloading and overriding with example?

CMC,

2 15362

C and C++ has constructors and distructors, why does Java does not have distructors?

T3 Softwares,

1 3890

How is Garbage collection done in Java?

T3 Softwares,

3 8210

Difference between overloading and Overriding. (also asked in PA Consultancy Group,iflex,Value chain,IBM,CTS,Accenture, Tarang>

Accenture, CTS, Extensio, IBM, iFlex, PA Consulting, Symphony, Tarang,

12 27390

where is .equals() method and how is it different from == operation Is hashing related to these?

iFlex,

4 6354

explain System.out.println()

CTS,

12 16813

what is wrapper class and its uses?

 2 5851

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Un-Answered Questions { Core Java }

What is thread life cycle in java?

571

What is an object class?

548

Which collection is best for sorting in java?

685

What are the 4 versions of java?

549

What is difference between == equals () and compareto () method?

519




How many decimal places is a double?

526

What are the methods to rectify ambiguities in the interfaces in JAVA?

578

What is keyset in java?

643

What are voids?

525

what is thread? : Java thread

545

Why does java not support operator overloading?

646

What are scriptlets?

591

What is consumer interface?

547

What are the data types supported by java? What is autoboxing and unboxing?

539

What is the largest data type in java?

502

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