关联
它表示类与类之间的连接，它使得一个类知道另一个类的属性和方法；关联是类与类，类与接口之间的一种比较强烈的关系，具有长期性。
代码体现：
1.B作为A的属性出现在了A中
2.关联类A引用了被关联类B的全局变量
依赖
它表示类与类之间的连接，表示一个类依赖于另外一个类的定义，方向是单向的；它具有偶然性，临时性，关系较弱。
例如：
public class Person { private String name; private int code; private int age; //构造函数 初始化类里的属性 /* * 函数的重载 类名相同 参数不同 */ public Person(String name,int code,int age){ this.name = name; this.age = age; this.code = code; } public Person() { this.name = "杖伞"; this.age = 120; this.code = 14343654; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getCode() { return code; } public void setCode(int code) { this.code = code; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } //关联 private Cock c ; public void setC(Cock c) { this.c = c; } public void eat() { System.out.println(this.name + "吃" + c.getName()); } public void bamao() { System.out.println("给" + c.getName() + "拔毛"); } public void qieduqn() { System.out.println("给" + c.getName() + "切段"); } public void xiaguo() { System.out.println("给" + c.getName() + "下锅，熬制半小时"); } //持有鸡的引用 依赖 public void eat(Cock c) { System.out.println(this.name + "吃" + c.getName()); } } public class Cock { private String name; private int weight; public Cock(String name,int weight) { this.name = name; this.weight = weight; } public int getWeight() { return weight; } public void setWeight(int weight) { this.weight = weight; } public String getName() { return name; } public void setName(String name) { this.name = name; } } public class Test { public static void main(String[] args) { //Person p = new Person("kaka",10,1246547658); Person p = new Person(); // 默认构造函数 //p.setName("kaka"); // p.setAge(10); // p.setCode(124365876); //Person p1 = new Person("里斯",10,234235436); Person p1 = new Person("里斯",10,234235436); // p1.setName("jeji"); // p1.setAge(10); // p1.setCode(13254765 ); System.out.println(p.getName() + ":" + p.getAge() + ":" + p.getCode() ); System.out.println(p1.getName() + ":" + p1.getAge() + ":" + p1.getCode() ); //对象的通讯 Person p2 = new Person("里斯",10,234235436); Cock cc = new Cock("芦花鸡",20); //依赖 p2.eat(cc); //关联 p2.setC(cc); p2.bamao(); p2.qieduqn(); p2.xiaguo(); p2.eat(); } }
