package 类的练习;

public class Person {

    private String name;

    private int age;

    private String sex;

    private String hobby;

    public String getSex() {

    return sex;

  }

  public void setSex(String sex) {

    this.sex = sex;

  }

  public String getHobby() {

    return hobby;

  }

  public void setHobby(String hobby) {

    this.hobby = hobby;

  }

  public void showInfo() {

      System.out.println(this.name+"----"+this.age);

    }

    //name :方法的参数name

    //this.name:当前类的属性name

    public void setName(String name) {

      this.name=name;

    }

    public String getName() {

      return name;

    }

    public void setAge(int age) {

      if(age<0) {

        System.out.println("我滴个乖乖,年龄能成负的?");

        this.age=-1;

        System.out.println("年龄有误！");

      } else if(age>120) {

        System.out.println("人能活那么久?");

        this.age=-1;

        System.out.println("年龄有误！");

      }else {

      this.age=age;

      }

    }

    public int getAge() {

      return age;

    }

}

package 类的练习;

public class TestPerson {

  public static void main(String[] args) {

    Person per=new Person();

    per.setName("张三");

    per.setAge(20);

    per.setSex("男");

    per.setHobby("敲代码");

    System.out.println("名字:"+per.getName());

    System.out.println("年龄:"+per.getAge());

    System.out.println("性别:"+per.getSex());

    System.out.println("爱好:"+per.getHobby());

  }

}