Different ways to create a object in Java

 Different ways to create an object in Java

1) Using New Keyword. This is the most common way to create an object in java. Almost 99% of objects are created in this way. It is the most basic way to create an object.

public class CreateObjects {

public static void main(String[] args) {

Create obj = new Create();

}

}

class Create{

String name;

}

2) using Class.forName().

 Class.forName() gives you the class object, which is useful for reflection. The methods that this object has are defined by Java, not by the programmer writing the class. They are the same for every class. Calling newInstance() on that gives you an instance of that class. If we know the name of the class & if it has a public default constructor we can create an object in this way.

MyClass object = (MyClass ) Class.forName("com.abc.MyClass ").newInstance();

3. using clone() .

The clone() can be used to create a copy of an existing object.

MyClass objmyclass= new MyClass ();
MyClass object = objmyclass.clone();

4)  Deserialization

Using object deserialization .Object deserialization is nothing but creating an object from its serialized form.

ObjectInputStream ois = new ObjectInputStream(anInputStream );
MyClass object = (MyClass) ois.readObject(); 

5) Factory Method

    By Using Factory Method:
    ClassName ObgRef=ClassName.FactoryMethod();
    Example:    RunTime rt=Runtime.getRunTime();//Static Factory Method.

      

6)  JDK8 should have lambdas (essentially concise anonymous inner classes), which are implicitly converted to objects.
       

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