参考代码
public class Human {
String name;//姓名 肯定有几个字符,所以用字符串
char gender;//性别 用1个char字符就可以存了
int age;//年龄 用整数
public Human(){//无参数的构造器
}
public Human(String name, char gender, int age) {//有参数的构造器
this.name = name;
this.gender = gender;
this.age = age;
}
public String showResult() {//showResult 方法,返回字符串
return "姓名:"+name+";性别:"+gender+";年龄:"+age;
}
public static void main(String[] args) {
Human h1= new Human();
String s1 = h1.showResult();
Human h2 = new Human("张三",'女',20);
String s2 = h2.showResult();
System.out.println(s1);
System.out.println(s2);
}
}
输出