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Core Java Interview Questions
Questions Answers Views Company eMail

What is more advisable to create a thread, by implementing a Runnable interface or by extending Thread class?

 5 11587

what's diff between struts 1.1 & 1.2

Wipro,

3 26192

why applet doesn't have main? isn't possible a program with out main?

TCS,

9 22524

what is an virtual function

TCS,

2 6204

what is the difference b/w design pattern and architecture

Covansys,

4 9411

What is emant by API? is it related to java only or it is common for all OOPS supporting language?

 3 5879

What is means by DLL file means ? What is the use of DLL file? What are the contents of DLL file?

 4 13184

without using arthematic operation ,how can you write the logic for adding/substraction/multiplication?

Tanla Solutions, Wipro,

7 13953

How to create an instance of a class if the class has private constructor?

 3 9728

How to create an instance of a class without using "new" operator? Plz help me out properly.Thank u.

CSC,

10 28796

how u do unit testing?

iFlex,

2 6286

How u dubugg ur project?

iFlex,

1 6535

who was the founder of java

CTS, HCL, ProKarma,

32 57666

what is mean by method signature?

Satyam,

5 9889

what is mean by String and StringBuffer? What is mean by Methooverriding and Overloading?

Satyam,

2 5941

Post New Core Java Questions

Un-Answered Questions { Core Java }

How define set in java?

1156

Is java hashset ordered?

1185

Why arraylist is used in java?

1126

What are the actions that can occur when a thread enters blocked state?

1120

Does java isempty check for null?

1044

What is the base class for error and exception?

1042

What is the super void?

960

What is update method called?

1213

Is void a data type?

999

Do we have pointers in java?

1074

String and stringbuffer both represent string objects. Can we compare string and stringbuffer in java?

1037

Is string is a keyword in java?

1042

How does map works in java?

1054

What is treeset in java collection?

1021

How to sort array of 0 and 1 in java?

1007

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