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

What is the difference between a constructor and a method?

1277

When arithmeticexception is thrown?

1049

What’s meant by anonymous class?

1118

What are runtime exceptions?

1180

Which number is denoted by leading 0x or 0x in java?

1063

What is the default value of an object reference declared as an instance variable?

1135

If a variable is declared as private, where may the variable be accessed?

1077

Why do we need wrapper classes?

1091

What is the range of the short type?

1036

What is hashmap and map?

1043

When is the arraystoreexception thrown?

1046

Can a top level class be private or protected?

1072

Is it necessary that each try block must be followed by a catch block?

1043

Can we have any other return type than void for main method?

969

In a class implementing an interface, can we change the value of any variable defined in the interface?

1112

Un-Answered Questions { Java Related }

What is local variable and instance variable?

1073

Why is model-view-controller architecture used in swing?

991

How you will decide when to use prototype scope and when singleton scope bean?

429

What is rmi and ejb in java?

1047

What is public static?

1052

why do we need log target when there is already a default logging mechanism available in datapower?

844

Is it possible to write two ejb’s that share the same remote and home interfaces, and have different bean classes? If so, what are the advantages/disadvantages?

1090

How many types of cascade are there in hibernate?

319

What is the difference between a jdk and a jvm?

927

Why dependency injection is required?

399

What is jpanel in java swing with example?

1008

What is phantom memory?

961

What is the default autowiring mode?

395

Explain the difference between runnable and callable interface in java?

1068

What are the types of controller in spring?

563

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