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Core Java Interview Questions
Questions Answers Views Company eMail

Difference between Array and vector?

9 24145

What is the difference between C++ & Java?

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

78 138666

Differences between GridLayout and GridBagLayout?

1 17323

What is the difference between Integer and int?

Infosys,

10 23612

Difference between Reader/Writer and InputStream/Output Stream?

Adobe, Kirusa, Verizon,

9 56524

Difference between String and String Buffer?

3 6260

What is the difference between Trusted and Untrusted Applet ?

IBM,

2 8560

Difference between a Canvas and a Scroll Pane?.

NIIT,

1 2889

Difference between Choice and a List?

1 15870

Difference between a MenuItem and a CheckboxMenuItem?

1 5892

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

KPIT,

2 5704

What are different types of Exceptions?.

9 31970

What are hot spots in Java programming?

1 5176

What are interfaces?

3 2931

What are invisible components?.

1280


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Un-Answered Questions { Core Java }

What is difference between c++ and java ?

167


What is singleton pattern?

141


How do you square a number in java?

111


What is meant by class loader? How many types are there? When will we use them?

158


What is the difference between pass by reference and pass by pointer?

113






What is update method called?

194


What is a hashmap used for?

118


What is the use of parse function in java?

105


Can we override constructor?

109


What will be the default values of all the elements of an array defined as an instance variable?

158


What best practices should you follow while writing multithreaded code in java?

133


What is data type in computer?

112


Explain try and catch keywords in java?

167


what is daemon thread and which method is used to create the daemon thread? : Java thread

131


What does jre stand for?

126