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Core Java Interview Questions
Questions Answers Views Company eMail

What is the difference between delete and delete[]

Amazon,

3 1547

What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy?

1132

What is the purpose of the System class?

1002

Explain about oops concepts.

Aditi Placement Service,

1123

Difference between string s= new string (); and string s = "abv";?

Cap Gemini,

1216

Explain about complier design(phases)

Aditi Placement Service,

1084

Explain about doubly linked list

Aditi Placement Service,

1032

What is compiler and what its output.

Cognizant,

1152

What is runtime locatable code?

Cognizant,

1427

What restrictions are placed on method overriding?

1187

What is an array in java?

1199

Explain how can you debug the Java code?

BirlaSoft,

1070

Explain the difference between an Interface and an Abstract class?

BirlaSoft,

1172

Explain the purpose of garbage collection in Java?

BirlaSoft,

1031

Explain what is Marker interface?

BirlaSoft,

1090


Post New Core Java Questions

Un-Answered Questions { Core Java }

Difference between final and effectively final ?

1107


Explain about assignment statement?

1024


What java is used for?

1073


How do you define a variable?

944


How does a for loop work?

988


What are synchronized methods and synchronized statements in java programming?

1022


How is abstraction implemented in java ?

1016


Why parameters should be passed by reference?

972


What will be the initial value of an object reference which is defined as an instance variable?

1146


How does thread synchronization occurs inside a monitor?

1101


What is getkey () in java?

1010


Is 0 a real number?

1043


How to declare objects of a class ?

1077


What is difference in between java class and bean?

1091


What is a java applet? What is an interface?

1098