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

Java J2EE (14736)
J2ME (151)
Java Related AllOther (507)

Java Related Interview Questions

Questions Answers Views Company eMail

Program to Find the second largest element in an array.

Amazon,

1177

Print Vertical traversal of a Binary Tree.

Amazon,

1011

Make a data structure and implement an algorithm to print all the files in a directory. (The root directory can have sub-directories too.)

Amazon,

1328

Is {a, n, d} a palindrome? If you are given a random string, is it a palindrome or not?

Amazon,

1125

Add a value x to array from index l to r where 0 <= l <= r <= n-1

Amazon,

1089

Implement a stack with push (), pop() and min() in O(1) time.

Amazon,

1103

Find the value of a specified element of the array arr[i] where 0 <= i <= n-1

Amazon,

975

Convert Binary tree to linked list.

Amazon,

1080

Convert a BST into a DLL and DLL to BST in place.

Amazon,

1111

worst case complexities of Quick sort and Merge sort.

Amazon,

1018

What do you mean by hashing?

Amazon,

1099

What is the definition of tree ?

Amazon,

1031

When can you say a graph to be a tree?

Amazon,

1081

What do you mean by constant time complexity?

Amazon,

1224

Write a program to show whether a graph is a tree or not using adjacency matrix.

Amazon,

1089

Un-Answered Questions { Java Related }

How you get nodeagent……what you have to install to get nodeagent?

855

Is java ee and j2ee same?

871

In system.out.println(), what is system, out and println?

995

What is the purpose of @validations annotation?

998

Why to use nested classes in java? (Or) what is the purpose of nested class in java?

1064

How do you sort a set in java?

908

What are stubs and how do they function in a web logic cluster?

1050

What is thread pool in java with example?

992

Which version of jdk is required for netbeans 8.0 2?

847

State some of the features present in the web sphere?

757

What’s the difference between callable and runnable?

1097

Explain about the interpreter in java?

1047

What are the three parts of a lambda expression?

1000

What is the session affinity?

1013

What is @controller annotation in spring mvc?

493

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