java输出学生的成绩定义方法

public class Student {
    
    private String name;
    private int chiness;
    private int math;
    private int english;

   
    void show(){
        Systemoutprintln(name+"语文成绩"+chiness+"\n"+
                name+"数学成绩"+math+"\n"+
                name+"英语成绩"+english);
    }
    
    void num(){
        Systemoutprintln("总分是："+(chiness+math+english));
    }
    
    void sum(){
        Systemoutprintln("平均分是："+(chiness+math+english)/3);
    }

   
    public Student() {
    }

   
    public Student(String name, int chiness, int math, int english) {
        thisname = name;
        thischiness = chiness;
        thismath = math;
        thisenglish = english;
    }

    
    public String getName() {
        return name;
    }

    
    public void setName(String name) {
        thisname = name;
    }

    
    public int getChiness() {
        return chiness;
    }

    
    public void setChiness(int chiness) {
        thischiness = chiness;
    }

    public int getMath() {
        return math;
    }

    public void setMath(int math) {
        thismath = math;
    }

    public int getEnglish() {
        return english;
    }

    public void setEnglish(int english) {
        thisenglish = english;
    }
}

public class test {     public static void main(String[] args) {        

         Student student = new Student("小罗",70,90,90);      

   studentshow();      

 studentnum();   

        studentsum();           

        Student student1 =new Student("罗洒",89,94,89);    

    student1show();  

      Student student2 = new Student("罗一",50,97,94);     

    student2show();         

 student2num();          

  student2sum();