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

Why set do not allow duplicates in java?

1201

Is vector synchronized in java?

1069

Can set contain duplicates?

1063

Can we create our own daemon thread?

1047

Why stringbuilder is not thread safe in java?

1086

Is string is a keyword in java?

1042

Why are lists ordered in java?

1072

How to split arraylist elements in java?

1249

Why set is used in java?

1074

How to access arraylist elements in java?

1055

How to declare an arraylist in java?

1206

Why string is not thread safe?

1058

What is complexity and its types?

1112

What are heterogeneous objects?

1089

Does java vector allow null?

1020

Un-Answered Questions { Java Related }

What is a servlet context?

1243

What do you mean by hibernate configuration file?

465

What is a topic?

947

How do you define a method?

1053

Difference between new operator and class.forname().newinstance()?

1184

What is the difference between a synchronized method and a synchronized block?

1130

explain the concept of virtual method invocation in polymorphism in detail?

2283

How can I right-justify a string?

1271

what is a portable component?

2078

Can an application have multiple classes having main method?

997

2) Suppose there are 5 directories having lot of files (say txt files) in each directory. 2 things :- 2.1) You want to search for filenames which have a particular pattern. 2.2) Out of these filtered files you want to search for a particular keyword or a search string. How can you achieve this?

2338

What is a pointcut?

437

Differentiate “find a method” from “select method” in EJB ?

1052

Is array a class?

1002

What kind of variables a class can consist of?

1167

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