Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

What is the difference between set and list?

5 40783

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

1 8807

What are File and RandomAccessFile classes?

2 6903

What are Font and FontMetrics classes?

1 6993

In which JDK version event-delegation model is introduced?

1 4220

Difference between the String and StringBuffer classes?

3 7261

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

1 15316

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

3 9893

What is the difference between throw and throws?

IBM,

11 23535

What is yielding and sleeping? how they different?

2 6198

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

Scope International,

1 4019

Explain the difference between Unicast and Multicast objects?

1 5130

What is the frontend and backedn in Java?

TCS,

3 9925

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

6 25894

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

1 5324

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Un-Answered Questions { Core Java }

What is type inference in java8?

1052

What is boolean logic?

1027

What are three ways in which a thread can enter the waiting state in java programming?

1166

What is string [] args?

1010

How do you find the independent variable?

1056

What are autoboxing and unboxing? When does it occur?

962

What is core java used for?

1127

What do you mean by static variable?

1065

Can you explain inner class.

1090

How do you sort a string in alphabetical order in java?

919

What is jit compiler in java?

1111

what are synchronized methods and synchronized statements? : Java thread

1000

What are aggregate functions explain with examples?

1066

Can memory leak happen java?

1011

Is java jre still free?

960

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