Tuesday, December 18, 2012

Various ways to create object in java

1. Using new keyword
MyObject object = new MyObject();

2. Using Class.forName()
If we know the name of the class & if it has a public default constructor we can create an object in this way.
MyObject object = (MyObject) Class.forName("package.MyClass").newInstance();

 3. Using clone()
The clone() can be used to create a copy of an existing object.
MyObject anotherObject = new MyObject(); 
MyObject object = anotherObject.clone();

4. Using object deserialization
Object deserialization is nothing but creating an object from its serialized form.
ObjectInputStream inStream = new ObjectInputStream(anInputStream ); 
MyObject object = (MyObject) inStream.readObject();

5. Using classloader
this.getClass().getClassLoader().loadClass(“package.MyClass”).newInstance();


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