Question

java程序求解：帮忙解决下面的问题，谢谢！

class Student {
static String schoolName;
String studentName;
}

public class StudengManager {
public static void main(String[] args) {
Student s1 = new Student();
s1.schoolName = "guangximinzushifanxueyuan";
s1.studentName = "zhangsan";
System.out.println("s1的学校是：" + s1.schoolName);
System.out.println("s1的姓名是：" + s1.studentName);
System.out.println("---------");
Student s2 = new Student();
s2.schoolName = "rongxianzhongxue";
s2.studentName = "lisi";
System.out.println("s1的学校是：" + s1.schoolName);
System.out.println("s1的姓名是：" + s1.studentName);
System.out.println("s2的学校是：" + s2.schoolName);
System.out.println("s2的姓名是：" + s2.studentName);
}
}
为什么s1的校名一直变化？？
这个是课本上解释static用法的一个例题，现在就是讨论s1的值为什么会变化。

Answer 1

class Student {
static String schoolName;
String studentName;
}
把static 去掉

Answer 2

。你这写法实在是太不规范了，哪有这么写的。
参数赋值，你应该放在构造函数内。
比如
public class Student{
private String schoolName;
private String studentName;

public Student(schoolName,studentName)
this.schoolName=schoolName;
this. studentName= studentName;
}
}
同时static String schoolName，去掉static
因共享一个空间，即s1调用它和s2调用它是一样的。可以用Student.schoolName,直接调用。
s2在调用它时就会刷新s1调用时的值。。

Answer 3

去掉第二行的static就好了