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

Core Java Interview Questions

Questions Answers Views Company eMail

Difference between method overloading and method overriding in java ?

1 1152

Explain about main thread in java?

1 1163

What access modifiers can be used for class ?

1 1087

Explain when classnotfoundexception will be raised ?

1 1097

Explain when noclassdeffounderror will be raised ?

1 1112

What all methods are used to prevent thread execution ?

1 1087

What are inner classes or non static nested classes in java?

1 1225

What are packages in java?

6 1830

Difference between ‘is-a’ and ‘has-a’ relationship in java?

1 1051

Explain why wait(), notify() and notifyall() methods are in object class rather than in thread class?

1 1076

Can we override constructors in java?

1 1225

Can sleep() method causes another thread to sleep?

1 1092

Explain importance of throws keyword in java?

1 1048

In how many ways we can create threads in java?

1 1285

Can we have multiple catch block for a try block?

1 1084

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Un-Answered Questions { Core Java }

What is parsing in java?

1022

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

1085

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

1053

How to create a base64 decoder in java8?

1119

What is the difference between equals() and == in java?

1022

Is minecraft 1.15 out?

1024

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

1113

What is a classloader in java?

1072

What is a constructor overloading in java?

1114

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

1071

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

2650

What is java string pool?

1068

Realized?

2239

How to sort array in descending order in java?

976

What is the difference between break and continue statements?

1107

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