Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Java J2EE Interview Questions

Questions Answers Views Company eMail

What is the benefit of using enum to declare a constant?

Aspire, Infogain,

1 1179

Define "Access specifiers" in java.

HCL,

1 1226

What are the different approaches to implement a function to generate a random number?

Axtria, ITC Indian Tobacco Company,

1 1115

What are abstract classes and anonymous classes?

Flextronics, Thomson Reuters, Virtusa,

1 1143

Explain the differences between static and dynamic variables?

Fidelity,

1 1214

How would you dynamically allocate memory to an array?

Atos Origin,

1 1083

What is the difference between Array and Hash Table?

Impetus,

1 1094

What are heap memory and stack memory and what are memory tables.

Aspiring Minds,

1 1036

What are the concepts of 'OOPS'?

Atos Origin,

1 1126

What is nested loop? What is dangling else condition in it?

Ericsson,

1 1146

What will happen when using pass by reference in java?

HCL,

1 1049

What is a concrete classes? Is Java object class is concrete class?

Infosys,

1 1037

Given a singly linked list, find the middle of the list in a single traversal without using temporary variable.

Fidelity,

1 1111

What is Gang of four design patterns

Infosys,

1 1119

Can a constructor be private and how are this() and super() method used with constructor?

Flextronics, Hexaware,

1 1067

Un-Answered Questions { Java J2EE }

what are the different modes of archival? Explain each mode in two lines each?

983

What do you know about validation plugin ?

1009

What do you mean by an interface in java?

1084

What is java string pool?

1068

Find Best Job Vacancies across the world on Jooble!

117

Hi frnds how to lock an user when he enter wrong credentials more than 3 time using java or j2ee tech take username and password in a bean no need to connect DB and validate give me some sample application code or links its urgent for me thanks in advance

2409

What is latest hibernate version?

465

What is the difference between filters and interceptors ?

1273

What is the difference between equals() and == in java?

1021

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

1071

What is a classloader in java?

1072

What is the difference between break and continue statements?

1107

explain different ways of using thread? : Java thread

1068

Is minecraft 1.15 out?

1024

Write a program to find the whether a number is an Armstrong number or not?

1085

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