面向对象——封装

package Note;

public class Package {
    //属性
    private String name;
    private int age;
    private String sex;
    //定义set，get方法

    public String getName(){
        return name;
    }
    public void setName(String name){
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        if ("男".equals(sex)||"女".equals(sex)){
            this.sex = sex;
        }else{
            this.sex = "男";
        }
    }
    //构造方法
    public Package(){

    }
    public Package(String name,int age,String sex){
        this.name = name;
        this.age = age;
        this.setSex(sex);
    }
}

package Note;
//类的名字是封装测试
public class PackageTest {
    public static void main(String[] args) {
        //创建对象
        Package p = new Package();
        p.setName("顺");
        p.setAge(20);
        p.setSex("huhuhui");
        System.out.println(p.getName()+"..."+p.getAge()+"..."+p.getSex());
        Package p1 = new Package("楠",21,"女");
        System.out.println(p1.getName()+"..."+p1.getAge()+"..."+p1.getSex());
    }
}