【示例】模拟学生使用电脑学习
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class Computer { String brand; //品牌 } public class SxtStu { // field int id; String sname; int age; Computer comp; void study() { System.out.println("我正在学习!使用我们的电脑,"+comp.brand); } SxtStu() { } public static void main(String[] args) { SxtStu stu1 = new SxtStu(); stu1.sname = "张三"; Computer comp1 = new Computer(); comp1.brand = "联想"; stu1.comp = comp1; stu1.study(); } } |
执行结果:
对应的UML图如下:
SxtStu和Computer的UML类图
原文:https://www.cnblogs.com/huaxiansheng/p/15310499.html