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

Core Java Interview Questions

Questions Answers Views Company eMail

What are the standards to place package statement within a source code file?

1 3703

What is the return type of read()?

3 7152

What is the return type of readLine() when end of a file is reached?

2 11627

What for read() function?

3 9064

What happens to the Exception object after handling an exception?

1 2435

What is stop(), suspend(), resume() method?

3 25417

What are MalformedURLException and UnknownHost Exceptions and whey they will be thrown?

2 4883

Under what circumstances an object reference be cast to an interface reference?

3 8350

When do you create an index?

2094

When does Exception occurs?

3 6421

In what circumstances, compiler will supply a default constructor for a class?

4 6710

When is an object in the mean to garbage collection?

3 6529

What are init(), start() methods and whey they are called?

2 8747

When finally clause is executed?

3 7556

When try and catch block is used ?

6 9306

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Un-Answered Questions { Core Java }

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

1021

Differentiate between static and non-static methods in java.

1106

What is a constructor overloading in java?

1113

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

1085

What do you mean by an interface in java?

1084

What is java string pool?

1068

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

Is minecraft 1.15 out?

1024

What is the difference between break and continue statements?

1107

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

1053

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

1110

How to sort array in descending order in java?

976

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

1112

Realized?

2239

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

1071

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