java构造方法

public class Student {
    String name;
    int age;
    String address;
    boolean isMen;
    Student(){
        System.out.println("无参");
    }
    Student(String name){
        this.name = name;
    }
    Student(int age,String name){
        this.age = age;
        this.name = name;
    }
    Student(String name,int age,String address,boolean isMen){
        this.name = name;
        this.age = age;
        this.address = address;
        this.isMen = isMen;
    }
}

public class TestStudent {
    public static void main(String[] args) {
        Student zhangsan = new Student();
        Student lisi =new Student(19,"lisi");
        Student wangwu = new Student("wangwu",20,"huxian",true);
    }
}