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Core Java Interview Questions
Questions Answers Views Company eMail

How will you reverse a singly-link list?

Akamai Technologies,

1008

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

Akamai Technologies,

971

What are the Main functions of Java?

Akamai Technologies,

1092

State the merge-sort principle and its time complexity.

Akamai Technologies,

979

What are access specifiers in java ?

Akamai Technologies,

1139

What data structures are used to perform recursion?

Akamai Technologies,

1053

What is a stack class in java ?

Akamai Technologies,

1105

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

Akamai Technologies,

1103

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

Akamai Technologies,

1089

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

Amazon,

931

Program to Find the second largest element in an array.

Amazon,

1188

Print Vertical traversal of a Binary Tree.

Amazon,

1017

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,

1335

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

Amazon,

1134

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

Amazon,

1093

Post New Core Java Questions

Un-Answered Questions { Core Java }

A non-static inner class may have object instances that are associated with instances of the class’s outer class. A static inner class does not have any object instances.

1015

What is string made of?

958

What is classpath?

1012

What is an abstract method in java programming?

1044

How the interruptible method gets implemented?

975

How to change value in arraylist java?

1177

Is array primitive data type in java?

998

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

1019

What one should take care of, while serializing the object?

903

What are the major drawbacks of external iteration?

1064

Can we clone singleton class in java?

958

Can an integer be null java?

1006

What is volatile keyword in java

1125

What checkbox method allows you to tell if a checkbox is checked?

1011

Is java code slower than native code?

1061

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