Java创建一个简单的学生类_java定义一个学生类,包括学号,姓名,性别

使用Java创建一个简单的学生类，内容包含学生的姓名，年龄，性别，学号。并且可以判断两个学生是否为同一个人（覆盖重写equals函数）

public class student {
 
    private String name;   //学生姓名
    private int age;   //学生年龄
    private String sex;  //学生性别
    private String stuNum;  //学生学号
 
    //构造函数
    public student(String name, int age, String sex, String stuNum){
        this.name = name;
        this.age = age;
        this.sex = sex;
        this.stuNum = stuNum;
    }
 
    //获取年龄
    public int getStudentAge(){
        return age;
    }
 
    //获取性别
    public String getStudentSex(){
        return sex;
    }
 
    //获取学生号
    public String getStudentNumber(){
        return stuNum;
    }
 
    //获取学生姓名
    public String getStudentName(){
        return name;
    }
 
    //判断两个学生是否为一个人 覆盖equals函数
    @Override
    public boolean equals(Object st){
        if(this == st) return true;
        if(st ==null) return false;
        if(this.getClass() != st.getClass()) return false;
 
        student another = (student) st;  // 强制类型转换成 student类
        // 调用toLowerCase() 在判断时可忽略大小写
        if (this.name.toLowerCase().equals(another.name.toLowerCase()) && this.sex.equals(another.sex) && this.stuNum.equals(another.stuNum) && (this.age == another.age)) return true;
        else return false;
    }
 
}

测试类：

public class StudentClassTest {
 
    public static void main (String[] args){
        student st1 = new student("Helen",25, "female", "ABC12359");
        student st2 = new student("helen",25, "female", "ABC12359");
        student st3 = new student("Juli",20, "female", "ABC12360");
        student st4 = new student("Helen",25, "female", "ABC12371");
        boolean flag1, flag2,flag3;
        flag1= st1.equals(st2);
        flag2= st1.equals(st3);
        flag3= st1.equals(st4);
        System.out.println("student1's name: " + st1.getStudentName());
        System.out.println("student1's sex: " + st1.getStudentSex());
        System.out.println("student1's age: " + st1.getStudentAge());
        System.out.println("student1's student number:" + st1.getStudentNumber());
        System.out.println("student1 equals to student2 " + flag1);
        System.out.println("student1 equals to student3 " + flag2);
        System.out.println("student1 equals to student4 " + flag3);
 
    }
 
}

输出结果：

student1's name: Helen
student1's sex: female
student1's age: 25
student1's student number:ABC12359
student1 equals to student2 true
student1 equals to student3 false
student1 equals to student4 false

参考资料：

https://haicoder.net/java/java-class-demo.html