Object creation in Java

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What are all the different ways to create an object in Java?

How many ways to create an object in java? I was asked about this in a recent interview.

Since everything in Java is on the heap, I would think 'new' is the way to go. Comments?

Possible duplicate of http://stackoverflow.com/questions/95419/what-are-all-the-different-ways-to-create-an-object-in-java — Piyush Mattoo, Mar 20 '11 at 18:57
Take a look at: http://www.geekinterview.com/question_details/22478 answer from jkathiravan — Adnan, Mar 20 '11 at 19:00

score 2 · Accepted Answer · answered Mar 20 '11 at 19:00

4 ways off the top of my head(I know this because I too was asked this question once!):

Using new:

Car obj = new Car();

By Cloning:

Car a = new Car();
Car b = a.clone();

Using forName from Class

Car obj = (Car) Class.forName("Car").newInstance();

By Deserializing:

ObjectInputStream in = new ObjectInputStream(instream);
Car object = (Car) in.readObject();

score 0 · Answer 2 · edited Jan 21 '12 at 21:07

0

new definitely, reflection is another option

edited Jan 21 '12 at 21:07

javanna

answered Mar 20 '11 at 18:57

Jan Zyka

2 Answers2