how coupling is implemented in java programming wise?

how to implement coupling in java? please provide some code snippets highlighting this

What do you mean by "coupling"?

coupling is the degree to which an object depends on other object

What would "implementing coupling" mean?

Surely you want to avoid coupling?

Find a book like "Code Complete" by Steve McConnell, which (I think) has sections about coupling and coherence in.

coupling is the degree to which an object depends on other object

True, you can find many articles on google on the topic. According to good OO practices coupling should be less. According to coupling, each class should show its functionality to outside world through an interface.Other classes should see this interface and should understand what that class does. e.g.

interface DogInterface
{
walk();
run();
bark();
}

class Dog implements DogInterface
{
//...implementations
}

This is not possible to do always.. but if its done , its good.

Surely it's a homework assignment, no? If so, then the FAQ's might be worthwhile reading.

Siddhesh Deodhar wrote:According to coupling, each class should show its functionality to outside world through an interface.

It goes beyond that, though.

You may find this article on "Dependency Injection." of interest.

Bill