public class Solution {
public static void main(String[] args) {
Person person = new Person();
System.out.println("年龄:" + age);
person.adjustAge(age);
System.out.println("调整后的年龄:" + age);
}
public static class Person {
public int age = 20;
public void adjustAge(int age) {
age = age + 20;
System.out.println("adjustAge() 中的年龄为 " + age);
}
}
}
要调用一次adjustAge方法,最后输出年龄是40