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 Vector class?

2 6103

What are virtual methods?

TCS,

1 4635

What method is used to know the status of Checkbox(i.e it is checked or unchecked)?

1 4567

What are advantages of using Java?s layout managers than windowing systems?

2371

What are Access Specifiers and Access Modifiers.

TCS,

6 22014

What are E and PI?

1 4730

What are listeners in java and explain ?

TCS,

2 8711

What are packages and name a few?

4 6554

primitive data types in Java ?

3 6849

What problems will occur when you don?t use layout managers?

1 3611

What are the limitations for static method?

Greenwood,

3 31555

What are the restrictions imposed by a Security Manager on Applets?.

2614

Name the runtime exceptions that occurs frequently?

4 7183

What services that container provides?

2 5176

Name the types of 'priority'?

2 8097

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Un-Answered Questions { Core Java }

How does multithreading take place on a computer with a single cpu?

1008

How many functional interfaces does java 8 have?

1028

What are green threads in java?

1001

What is the use of inner class?

1046

Can you make a constructor final in Java?

1134

What are the different types of methodologies?

1010

What is meant by attribute?

1126

extending thread class or implementing runnable interface. Which is better? : Java thread

1000

I want to control database connections in my program and want that only one thread should be able to make database connection at a time. How can I implement this logic?

1101

What is bufferedwriter?

973

What state does a thread enter when it terminates its processing in java programming?

1043

Is this valid in java ? Can we instantiate interface in java?

985

What are the main features of java?

972

What are 3 boolean operators?

1007

If two threads have same priority which thread will be executed first ?

1482

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