java练习题

定义一个类Student，属性为学号、姓名和成绩；方法为增加记录SetRecord和得到记录GetRecord。SetRecord给出学号、姓名和成绩的赋值，GetRecord通过学号得到考生的成绩。

public class Student{
 private int ID;
 private String name;
 private float score;
public void SetRecord(int ID,String name,float score){
 this.ID=ID;
 this.name=name;
 this.score=score;
}
public float getRecord(int ID){
 if(ID==this.ID)
  return this.score;
 else
  return -1;
}
public static void main(String[] args){
 Student s=new Student();
 s.SetRecord(0,"alex",100);
 float Sco=s.getRecord(0);
 System.out.print(Sco);
}
}

给出上题中设计类的构造函数，要求初始化一条记录(学号、姓名、成绩)。

public class Student{
 private int ID;
 private String name;
 private float score;
Student(int ID,String name,float score){
 this.ID=0;
 this.name="666";
 this.score=65;
}
public void SetRecord(int ID,String name,float score){
 this.ID=ID;
 this.name=name;
 this.score=score;
}
public float getRecord(int ID){
 if(ID==this.ID)
  return this.score;
 else
  return -1;
}
public static void main(String[] args){
 Student s=new Student(0,"sdfs",12);
 //s.SetRecord(0,"alex",100);
 float Sco=s.getRecord(0);
 System.out.print(Sco);
}
}