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

Core Java Interview Questions

Questions Answers Views Company eMail

Write a program to check string is palindrome without using loop?

Cyient,

1 1104

What is jvm? How its run?

1 1165

Define inheritance with reference to java.

1 1155

When will we prefer to use set and list in java and why?

1 1031

How can we create a synchronized collection from given collection?

1 1138

How to avoid memory leak in java?

1 1189

What is the difference between a checked and an unchecked exception?

Cyient,

1 1058

How dead lock situation occurs in java and how you can identify it?

1 1059

What are the various access specifiers in java?

1 1059

Write a java program for binary search?

1 1127

Explain the difference between call by refrence and call by value?

1 1082

Why we use multi threading instead of multiprocessing?

1 1131

How to write custom exception in java?

Cyient,

1 1121

Name and explain the types of ways which are used to pass arguments in any function in java.

1 1139

Explain how hashmap works?

1 1129

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Un-Answered Questions { Core Java }

What are the differences between heap and stack memory in java?

1112

What is a classloader in java?

1072

explain different ways of using thread? : Java thread

1068

What is parsing in java?

1022

How to create a base64 decoder in java8?

1119

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

2649

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

1110

What do you mean by an interface in java?

1084

How to sort array in descending order in java?

976

What is java string pool?

1068

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

1071

Differentiate between static and non-static methods in java.

1106

Realized?

2239

Is minecraft 1.15 out?

1024

What is the difference between break and continue statements?

1107

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