The difference between association relationship and dependency relationship

First, the semantic:

Association relationship:

A has a (knows a) B

Dependency Relationship:

A uses a B

Second, the code:

Association relationship:

Package facade;

/**
* @author Administrator
* @version 1.0
* @created 11-10-2015 18:42:05
*/
public class A {

Public B M_b;

Public A () {

}

public void Finalize () throws Throwable {

}

}

Dependency Relationship:

Package facade;

/**
* @author Administrator
* @version 1.0
* @created 11-10-2015 18:44:06
*/
public class A {

Public A () {

}

public void Finalize () throws Throwable {

}

/**
*
* @param obj
*/
public int process (B & obj) {
return 0;
}

}

The difference between association relationship and dependency relationship