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

Core Java Interview Questions

Questions Answers Views Company eMail

How will you reverse a singly-link list?

Akamai Technologies,

1052

Is linked list a linear or non-linear data structure?

Akamai Technologies,

1013

What are the Main functions of Java?

Akamai Technologies,

1133

State the merge-sort principle and its time complexity.

Akamai Technologies,

1035

What are access specifiers in java ?

Akamai Technologies,

1202

What data structures are used to perform recursion?

Akamai Technologies,

1104

What is a stack class in java ?

Akamai Technologies,

1156

What is method overloading in JAVA? Why is it not present in C ?

Akamai Technologies,

1147

What is the difference between quicksort & mergesort? When should they be used? What is their running time?

Akamai Technologies,

1142

Lowest Common ancestor in a Binary Search Tree and Binary Tree.

Amazon,

985

Program to Find the second largest element in an array.

Amazon,

1262

Print Vertical traversal of a Binary Tree.

Amazon,

1064

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,

1381

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

Amazon,

1197

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

Amazon,

1134

Post New Core Java Questions

Un-Answered Questions { Core Java }

Differentiate jar and war files?

1091

What do the thread?class methods run() and start() do?

1078

What do you mean by data type?

1065

What is the similarity between dynamic binding and linking?

1170

What is Classloader in Java?

1297

What does isempty () do in java?

1118

How do you escape in java?

1138

What happens if we override only equals?

1017

What is an array in java?

1287

What must a class do to implement an interface in java programming?

1138

Where is the singleton class used?

1082

How do you escape sequences in java?

1114

What is not thread safe?

1039

What is private protected in java?

1100

Can java run on google chrome?

1254

For More Un-Answered { Core Java } Questions Click Here