面向对象Demo02
方法的调用的回顾
package oop;
public class Demo02 {
//静态
public static void main(String[] args) {
//student student = new student();
student.speak();
//非静态
//student student = new student();
}
}
package oop;
public class student {
public static void speak() {
System.out.println("说话");
}
}
package oop;
public class Demo03 {
public static void main(String[] args) {
int a = 1;
System.out.println(a);//1
Demo03.change(a);
System.out.println(a);//1
}
//返回值为空
public static void change(int a) {
a=10;
}
}
打卡！打卡！打卡！打卡！打卡！
