1. 关联关系
1.1 单向关联
、
public class ClassA {
private ClassB bVar;
}
public class ClassB {
//...
}
1.2 双向关联
public class ClassA {
private ClassB bVar;
}
public class ClassB {
private ClassA aVar;
// ...
}
1.3 自关联
public class ClassH {
private ClassH hVar;
}
2. 聚合、组合
2.1 聚合
public class Computer {
private CPU cpu;
//....
}
class CPU {
//...
}
2.2 组合
public class Database {
private ArrayList<Table> tableList;
}
class Table {
}
3. 依赖
public class ClassX {
public void funx(ClassY yObj){};
}
class ClassY {
}
4. 泛化（继承）
5. 实现