How do you communicate between object and object in java?

Answer 1

Communication between object

In java , objects communicate by message passing.

An object oriented program is nothing but a bunch of objects telling each other what to do". To pass a message to an object means that a call to a method of that object is placed.

An object by itself is not incredibly useful. In general, it takes more than one object to really do anything meaningful. Since multiple objects typically need to communicate with each other, it stands to reason that an OOP language such as Java must provide some kind of object communication mechanism.

Object: An object is a collection of data and the procedures (methods) that act on that data.

Java Messages:

Java objects use messages to communicate with each other. Messages simply tell an object what to do. In Java, the act of sending a message to an object involves calling one of the object's methods .

It is a common practice to pass additional information along with a message. This information is passed along with the message as message parameters. More specifically, the message information is passed into a method as method parameters.

Message passingis another way of saying "method calling." When an object sends a message to another object, it is really just calling a method on that object. The message parameters are really just the parameters to the method. The bottom line is that messages and methods are synonymous.

Answer 2

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