标签:
public class testclass {
public static void main(String[] args){
Student stu1 = new Student();
Comp c1 = new Comp();
c1.band="梁河县";
stu1.comp = c1;
c1.band="1111";
System.out.println(stu1.comp.band);
}
}
class Comp {
String band;
}
class Student {
int a;
int b;
Comp comp;
}
1111
每个类的对象都需要实例化,允许对象赋值指向同一实例化内容。所以改变例子中c1的值实际也改变了stu1.comp.band的值。
标签:
原文地址:http://www.cnblogs.com/cydcn/p/4490726.html