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Core Java Interview Questions
Questions Answers Views Company eMail

What is the difference between set and list?

5 37347

Explain the difference between the Boolean & operator and the && operator?

1 7492

What are File and RandomAccessFile classes?

2 4998

What are Font and FontMetrics classes?

1 5491

In which JDK version event-delegation model is introduced?

1 2880

Difference between the String and StringBuffer classes?

3 4498

Difference between the paint() and repaint() methods?

1 13410

Difference between prefix and postfix forms of the ++operator?

3 7743

What is the difference between throw and throws?

IBM,

10 17091

What is yielding and sleeping? how they different?

2 3896

What is Unicast and Multicast object? Where we will use?

Scope International,

1 2508

Explain the difference between Unicast and Multicast objects?

1 3723

What is the frontend and backedn in Java?

TCS,

3 7529

What is the difference between static and non-static variables?

6 21584

What is the difference between the >> and >>> operators?

1 3825


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Un-Answered Questions { Core Java }

Can we override final method?

129


Can an interface implement another interface?

120


What is the static method?

144


What are streams in java 8?

106


What are the advantages of java?

116






Can we override tostring method in java?

106


Do you know how to reverse string in java?

149


What do you mean by platform independence? What is an interface?

143


What are the advantages of unicode?

121


What are mutable classes?

140


Write down program for following scenario. Use java coding standard. You have array list with some words in it..we will call it as dictionary….and you have a arbitrary string containing some chars in it. You have to go through each word of dictionary and find out if that word can be constructed with the help of chars from arbitrary string given. If you find the word print it else print none.

1845


Does java vector allow null?

88


Why is the main method declared static?

135


What is type inference in java8?

151


What is string in java with example?

91