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 Array and vector?

9 29588

What is the difference between C++ & Java?

College School Exams Tests, HAL, SUN, Syntel, TCS, Wipro,

78 177073

Differences between GridLayout and GridBagLayout?

1 21397

What is the difference between Integer and int?

Infosys,

10 29864

Difference between Reader/Writer and InputStream/Output Stream?

Adobe, Kirusa, Verizon,

9 64165

Difference between String and String Buffer?

3 8451

What is the difference between Trusted and Untrusted Applet ?

IBM,

2 11299

Difference between a Canvas and a Scroll Pane?.

NIIT,

1 5040

Difference between Choice and a List?

1 19991

Difference between a MenuItem and a CheckboxMenuItem?

1 8921

What are concepts of OOPS and how are they implemented in Java?

KPIT,

2 8219

What are different types of Exceptions?.

9 37737

What are hot spots in Java programming?

1 6739

What are interfaces?

3 5036

What are invisible components?.

2098

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Un-Answered Questions { Core Java }

What is linkedlist in java?

950

What are new features introduced with java 8 ?

952

What does a boolean method return?

1169

What is an example of declaration?

966

How do you define a set in java?

963

What is a map? What are the implementations of map?

1055

What is the purpose of extern variable?

976

What is application system?

907

What is == and === in javascript?

1013

What is structure of java heap? What is perm gen space in heap?

1073

How to perform merge sort in java?

1008

What is adapter in java?

882

What is the relationship between clipping and repainting under awt?

1105

Can a class extend more than one class?

1073

What is boolean false?

934

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