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 29857

What is the difference between C++ & Java?

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

78 179198

Differences between GridLayout and GridBagLayout?

1 21507

What is the difference between Integer and int?

Infosys,

10 30174

Difference between Reader/Writer and InputStream/Output Stream?

Adobe, Kirusa, Verizon,

9 64466

Difference between String and String Buffer?

3 8582

What is the difference between Trusted and Untrusted Applet ?

IBM,

2 11405

Difference between a Canvas and a Scroll Pane?.

NIIT,

1 5139

Difference between Choice and a List?

1 20062

Difference between a MenuItem and a CheckboxMenuItem?

1 9001

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

KPIT,

2 8317

What are different types of Exceptions?.

9 38069

What are hot spots in Java programming?

1 6814

What are interfaces?

3 5153

What are invisible components?.

2146

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Un-Answered Questions { Core Java }

List some important characteristics on jre

1076

What is sorting algorithm in java?

1077

How can you set the applet size?

1058

What is meant by overloading?

1070

What is a Transient Object?

1085

Define inheritance?

1017

What is polymorphism and what are the types of it?

993

What is the size of int in 64-bit jvm?

1099

What is the default size of load factor in hashing based collection?

1051

What is string array?

1066

Explain 5 features introduced in jdk 1.7?

1029

Define max and min heap, also the search time of heap.

1028

Which method you will use to create a new file to store some log data. Each time a new log entry is necessary, write string to the file in java ?

1161

What is parsing in java?

963

What is anti pattern in cyber security?

1031

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