知识点：

1.Java类型分为基本类型和引用类型

2.静态成员不能访问非静态成员

3.Myeclipse 代码格式调整快捷键Ctrl+Shift+F

4.Java中只有值传递

public class Person {    public String name;    public static String sex;    public int age;    public static void say(String content) {        System.out.println(content);    }    public static void main(String[] args) {        Person p = new Person();        p.name = "java";        p.age = 22;        p.sex = "男";        p.say("Hello World!");        Person.say("Hello World!");        Person.sex = "男";        System.out.println(p.name);        System.out.println(p.age);        Person.say(p.name);    }}

运行截图