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; } }
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