Object obj = new Object(); // Note the 'new' keyword
Where:
Object is a reference type.obj is the variable in which to store the new reference.Object() is the call to a constructor of Object.What happens:
Object() is called to initialize that memory space.obj, so that it references the newly created object.This is different from primitives:
int i = 10;
Where the actual value 10 is stored in i.