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 is the use of ?this??

4 6879

What is meant by throwing an Exception?

Accenture,

4 10129

What is user defined exception?

4 9429

What is your platform?s default character encoding and how to know this?

TCS,

1 2422

What is the root class for all Java classes?

IBM, Infosys,

8 27556

Inorder to specify a container?s layout, which method is used?

1 4537

Name the methods that used to get and set the text label displayed by a Buttonobject?

1 4649

What methods are used in Servlet?Applet communication?

Satyam,

1 2328

What modifiers can be used with a local inner class?

2 10656

What modifiers are used with a top level class?

3 7396

What modifiers are used with an inner class which is a member of an outerclass?

1 4749

What modifiers are used for interface declaration?

7 10791

How a class can implement an interface?

SysArc,

5 10263

What releases of Java technology are currently available? What do they contain?

1 2720

What restrictions are placed on method overloading and method overriding?

5 31712

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Un-Answered Questions { Core Java }

explain different ways of using thread? : Java thread

1068

Realized?

2239

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

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

1053

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

1071

What do you mean by an interface in java?

1084

What is the difference between break and continue statements?

1107

What is parsing in java?

1022

Differentiate between static and non-static methods in java.

1106

How to sort array in descending order in java?

976

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

1021

What is java string pool?

1068

What is a classloader in java?

1072

What is a constructor overloading in java?

1113

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

1085

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