java程序开发编写程序

public class Student {
    private String stuNo;
    private String name;
    private char gender;
    private String classNo;
    private int score;

    public Student() {
    }

    public Student(String stuNo, String name, char gender, String classNo, int score) {
        this.stuNo = stuNo;
        this.name = name;
        this.gender = gender;
        this.classNo = classNo;
        this.score = score;
    }

    @Override
    public String toString() {
        return "Student{" +
                "stuNo='" + stuNo + '\'' +
                ", name='" + name + '\'' +
                ", gender=" + gender +
                ", classNo='" + classNo + '\'' +
                ", score=" + score +
                '}';
    }

    public static void main(String[] args) {
        Student s1 = new Student();
        System.out.println("无参构造对象:"+s1);
        Student s2 = new Student("123","张三",'男',"11",90);
        System.out.println("有参构造对象:"+s2);
    }
}

定义类，按要求给属性和方法，最后测试。

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public class Student {
    private String stuNo;
    private String name;
    private char gender;
    private String classNo;
    private int score;
    public Student() {
    }
    public Student(String stuNo, String name, char gender, String classNo, int score) {
        this.stuNo = stuNo;
        this.name = name;
        this.gender = gender;
        this.classNo = classNo;
        this.score = score;
    }
    @Override
    public String toString() {
        return "Student{" +
                "stuNo='" + stuNo + '\'' +
                ", name='" + name + '\'' +
                ", gender=" + gender +
                ", classNo='" + classNo + '\'' +
                ", score=" + score +
                '}';
    }
}


public class Test{
    public static void main(String[] args) {
        Student s1 = new Student();
        System.out.println("调用无参构造方法:"+s1);
        Student s2 = new Student("1001","小白",'男',"22",88);
        System.out.println("调用有参构造方法:"+s2);
    }

}