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 6571

What is meant by throwing an Exception?

Accenture,

4 9784

What is user defined exception?

4 9095

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

TCS,

2337

What is the root class for all Java classes?

IBM, Infosys,

8 26884

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

1 4344

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

1 4492

What methods are used in Servlet?Applet communication?

Satyam,

2194

What modifiers can be used with a local inner class?

2 10387

What modifiers are used with a top level class?

3 7162

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

1 4611

What modifiers are used for interface declaration?

7 10271

How a class can implement an interface?

SysArc,

5 9808

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

1 2539

What restrictions are placed on method overloading and method overriding?

5 31244

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Un-Answered Questions { Core Java }

Why wait(),notify(),notifyAll() methods defined in Object class althought we are using in only threads.

2778

What is string made of?

919

What is class and object in java?

961

What is flag in python?

1000

What are three ways in which a thread can enter the waiting state in java programming?

1116

What is the major difference between linkedlist and arraylist?

985

Define jit compiler?

1076

What is java used for?

979

Give a practical example of singleton class usage?

1007

What is arrays aslist in java?

933

What is widening and narrowing in java? Discuss with an example.

1000

When arithmeticexception is thrown?

983

Why to use nested classes in java?

1064

What is 16 bits called?

899

What is difference between add() and addelement() in vector?

1497

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