Question

求java代码！！

练习1：
1.编写一个Student类，包含name、gender、age、id、score属性，分别为String、String、int、int、double类型。
2.类中声明一个say方法，返回String类型，方法返回信息中包含所有属性值。
3.在另一个TestStudent类中的main方法中，创建Student对象，并访问say方法和所有属性，并将调用结果打印输出。

Answer 1

1. 学生类。
   

   
   

   
   

/**
 * <p>学生类</p>
 * @author z_y
 *
 */
public class Student {

    /**
     * propertys
     */
    private int id;
    private int age;
    private String name;
    private String gender;
    private double score;
    
    //empty constructor
    public Student(){}

    //full constructor
    public Student(int id, int age, String name, String gender, double score) {
        super();
        this.id = id;
        this.age = age;
        this.name = name;
        this.gender = gender;
        this.score = score;
    }

    //getter and setter
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public int getAge() {
        return age;
    }

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

    public String getName() {
        return name;
    }

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

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public double getScore() {
        return score;
    }

    public void setScore(double score) {
        this.score = score;
    }
    
    /**
     * <p>say方法</p>
     * @return key:value 返回所有的属性及其对应的值 
     */
    public String say(){
        return "id:" + this.id + ",age:"+ this.age + ",name:"+this.name + ",gender:" + this.gender + ",score:" + this.score;
    }
}

2.测试类

/**
 * <p>学生测试类</p>
 * @author z_y
 *
 */
public class TestStudent {

    /**
     * @param args
     */
    public static void main(String[] args) {
        //new Student
        Student stu = new Student();
        
        //setter 
        stu.setId(1);
        stu.setAge(20);
        stu.setName("张三");
        stu.setGender("男");
        stu.setScore(75.63);
        
        //execute say
        System.out.println("学生信息：" + stu.say());
    }

}

追问

第一个编译成了，但是运行时候说缺少main方法，怎么处理啊，谢谢

Answer 2

public class Student {
/**
* propertys
*/
private int id;
private int age;
private String name;
private String gender;
private double score;

//empty constructor
public Student(){}

//full constructor
public Student(int id, int age, String name, String gender, double score) {
super();
this.id = id;
this.age = age;
this.name = name;
this.gender = gender;
this.score = score;
}

//getter and setter
public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public int getAge() {
return age;
}

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

public String getName() {
return name;
}

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

public String getGender() {
return gender;
}

public void setGender(String gender) {
this.gender = gender;
}

public double getScore() {
return score;
}

public void setScore(double score) {
this.score = score;
}

/**
* <p>say方法</p>
* @return key:value 返回所有的属性及其对应的值
*/
public String say(){
return "id:" + this.id + ",age:"+ this.age + ",name:"+this.name + ",gender:" + this.gender + ",score:" + this.score;
}
}

Answer 3

你好无聊啊