咋整啊，一点不会啊！！

..这是啥..
没头没尾的,那我随便给你糊一个

package com.csdn;

public class q7503340 {
    public static void main(String[] args) {
        Student s1 = new Student("示例人","码代码",18,1);
        System.out.println(s1);


    }
}

class Student {
    private String name, hobby;
    private int age, sex;

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", hobby='" + hobby + '\'' +
                ", age=" + age +
                ", sex=" + sex +
                '}';
    }

    public Student(String name, String hobby, int age, int sex) {
        this.name = name;
        this.hobby = hobby;
        this.age = age;
        this.sex = sex;
    }

    public Student() {
    }

    public String getName() {
        return name;
    }

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

    public String getHobby() {
        return hobby;
    }

    public void setHobby(String hobby) {
        this.hobby = hobby;
    }

    public int getAge() {
        return age;
    }

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

    public int getSex() {
        return sex;
    }

    public void setSex(int sex) {
        this.sex = sex;
    }
}

你这是要干什么？

System.out.println(
"输出姓名
输出年龄
输出性别
输出爱好");

public static void main(String[] args) {
    System.out.println("输出姓名");
    System.out.println("输出年龄");
    System.out.println("输出性别");
    System.out.println("输出爱好");
}

应该是在txt文件里面写上这些，在程序控制台中输出txt文件的内容吧

System.out.println("要输出的内容");