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?

1 1377

When arithmeticexception is thrown?

1 1111

What’s meant by anonymous class?

1 1181

What are runtime exceptions?

1 1250

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

1 1132

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

1 1208

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

1 1131

Why do we need wrapper classes?

1 1149

What is the range of the short type?

1 1098

What is hashmap and map?

1 1100

When is the arraystoreexception thrown?

1 1106

Can a top level class be private or protected?

1 1123

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

1 1101

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

1 1022

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

1 1200

Un-Answered Questions { Java Related }

Can we return resultset in java?

990

Write a program to print count of empty strings in java 8?

1084

Realized?

2257

What do you understand by casting in java language? What are the types of casting?

923

How to sort array in descending order in java?

989

explain different ways of using thread? : Java thread

1079

what is reflection api? How are they implemented?

1102

What is the difference between filters and interceptors ?

1305

Differentiate between static and non-static methods in java.

1118

How does java handle integer overflows and underflows?

1111

What are the contents on web.xml in struts application ?

1060

What is an object in java and how is it created?

1129

What is java string pool?

1076

Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2659

What do you know about validation plugin ?

1026

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