What is an object in Java and how is it created?

Java is an “object-oriented” language, which means that it uses objects to represent data and provide methods related to them . This way of organizing programs is a powerful design concept, and we will introduce it a little at a time throughout the remainder of the book.

So basically, an object is created from a class . In Java, the new keyword is used to create new objects. There are three steps when creating an object from a class − Declaration − A variable declaration with a variable name with an object type. Instantiation − The ‘new’ keyword is used to create the object.

All objects in Java are stored on the heap . The “variables” that hold references to them can be on the stack or they can be contained in other objects (then they are not really variables, but fields), which puts them on the heap also. The Class objects that define Classes are also heap objects.