Q:

Java objects without creating instance

I recently started learning java and i am trying to understand How is it possible  to equalize a reference object to a variable or method without creating instance, like
Example:
class A {

    View  v; 
    v = [someMethod();/variable;]
    // not necessarily view class
}

A:

View w = <expression>;

where <expression> may create a new instance of View or may be evaluated to a reference to the object that already been created at some point in the past. 
For instance,
Integer i = Integer.valueOf(0);

returns the same object for 0 that was created when the Integer class was loaded into the JVM. 