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Core Java Interview Questions
Questions Answers Views Company eMail

What are synchronized methods ?

1 1165

What is a lock or purpose of locks in java?

1 1095

In how many ways we can do synchronization in java?

1 1017

What is difference between c++ and java ?

1 1177

Explain a situation where finally block will not be executed?

1 1101

Explain yield() method in thread class ?

1 1124

What is class level lock ?

1 1085

What happens if we don’t override run method ?

1 1080

Explain about static nested classes in java?

1 1131

Can we create constructor in abstract class ?

1 1127

Explain purpose of sleep() method in java?

1 1179

What does null mean in java?

1 1142

How to do encapsulation in java?

1 1111

Can one thread block the other thread?

1 1076

Explain about instanceof operator in java?

1 1127


Post New Core Java Questions

Un-Answered Questions { Core Java }

Differentiate between static and non-static methods in java.

1106


What is parsing in java?

1022


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

1112


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 is the difference between break and continue statements?

1107


How to create a base64 decoder in java8?

1119


Explain public static void main(string args[]) in java.

1053


explain different ways of using thread? : Java thread

1068


What is a constructor overloading in java?

1113


What is a classloader in java?

1072


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

1085


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

1071


What is java string pool?

1068


Is minecraft 1.15 out?

1024