小白求助，如何解决要求？？？？？？

public class JsonText {
public static void main(String[] args) {
Student student = new Student();
System.out.println(student);
}
}
class Student{
private String name;
private Integer age;
private char sex;
private float score;
/**
* 不建议用isPass,容易发生错误
*/
private Boolean isPass;

public Student() {
    this.name = "张三";
    this.age = 18;
    this.sex = '男';
    this.score = 66.6f;
    this.isPass = Boolean.TRUE;
}

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

}

public class Test1 {
private String name = "张三";
private int age = 18;
private String sex = "男";
private double score =66.6f;
private boolean isPass =true;

public static void main(String[] args) {
    Test1 test1 = new Test1();
    System.out.println(test1.toString());
}

@Override
public  String toString() {
    return "Test1{" +
            "name='" + name + '\'' +
            ", age=" + age +
            ", sex='" + sex + '\'' +
            ", score=" + score +
            ", isPass=" + isPass +
            '}';
}

}

public class JsonText {
    public static void main(String[] args) {
        Student student = new Student();
        System.out.println(student);
    }
}
class Student{
    private String name;
    private Integer age;
    private char sex;
    private float score;
    /**
     * 不建议用isPass,容易发生错误
     */
    private Boolean isPass;

    public Student() {
        this.name = "张三";
        this.age = 18;
        this.sex = '男';
        this.score = 66.6f;
        this.isPass = Boolean.TRUE;
    }

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