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

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Java Related Interview Questions

Questions Answers Views Company eMail

I want my class to be developed in such a way that no other class (even derived class) can create its objects. How can I do so?

1037

What is meant by anonymous class?

1098

How objects are stored in java?

1098

Can a class have multiple constructors?

1137

Describe different states of a thread.

1051

What are the various access specifiers for java classes?

1121

Can we call the constructor of a class more than once for an object?

1144

Is string a data type in java?

1057

I want to control database connections in my program and want that only one thread should be able to make database connection at a time. How can I implement this logic?

1153

Can we have two methods in a class with the same name?

1115

In the below example, what will be the output?

1089

What is the default access specifier for variables and methods of a class?

1260

What are the two ways of implementing multi-threading in java?

1 1587

What's the difference between comparison done by equals method and == operator?

1024

How infinite loop is declared?

1064

Un-Answered Questions { Java Related }

What are the 6 functions?

1026

What do you mean by url pattern in servlet?

1166

What is the flow of requests in struts based applications?

1038

What elements make up the administration console?

971

What is meant by connection string?

1028

Which variables are stored in heap?

1089

Why doesn’t the main method throw an error with no arguments?

986

What is difference between ++ I and I ++ in java?

1036

What is the difference between 2 types of servlets?

1201

How to update a resultset programmatically?

1151

What do you understand by java?

1052

What is Generic in java? Where can we write Generic ( class or method or objects or etc...)? with simple example? Thanks, Bose. Infosys 2 In which way does a Primitive data type is passed ? Sun- Microsystems 4 what is the use of declaring constructor as private? Sai- Softech 5 what is difference between global methods and local methods? 1 What is meant by class loader and how many types are there? Apple 1 what is meaning of JIT? 4 What is an abstract class? Wipro 5 what is filters and its use? Virtusa 2 why is multiple inheritance not allowed in java? Elementus-Technologies 7 Differences between jdk 1.4 and 1.5 Wipro 4 is JVM platform dependent or independent..? IBM 6 what is main purpose of abstract class? 5 what is difference between colection and collections? Tech-Mahindra 11 What error occurs if a try-catch-finally statement sequence does not have a catch clause? 2 Explain the difference between scrollbar and scrollpane? 1 Explain the differences between public, private, protected and static? 4 Explain the difference between getAppletInfo and getParameterInfo? 1 Is Cegonsoft Pvt.Ltd. a good Institute? 4 Why only one Class is public in one file? Explain in details. Thanks in Advance. 11 Which method will get invoked first in a stand alone application?

2906

Why do we need transactions in hibernate?

388

What is string example?

1118

Why does it take so much time to access an applet having swing components the first time?

1999

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