定义一个课程类

class Course{
    String cNumber;
	String cName;
	int cUnit;
	public static int cTotalNum;
	public Course(String cNumber,String cName ,int cUnit){
		this.cNumber=cNumber;
		this.cName=cName;
		this.cUnit=cUnit;
		this.cTotalNum++;
	}
	public void setcNum(String number){
		cNumber=number;
	}
	public void setcName(String name){
		cName=name;
	}
	public void setcUnit(int unit){
		cUnit=unit;
	}
	public String getcNum(){
		return cNumber;
	}
	public String getcName(){
		return cName;
	}
	public int getcUnit(){
		return cUnit;
	}
	public void printCourseInfo(){
		System.out.println("课程编号为"+cNumber);
		System.out.println("课程名为"+cName);
		System.out.println("分数为"+cUnit);
		System.out.println(this.cTotalNum);
	}
	}
class Test2
{
	public static void main(String[] args)
	{
		Course A=new Course("201703","java面向对象",100);
		//Course B=new Course("201704","java面向对象2",99);
		//Course C=new Course("201703","java面向对象",100);
		A.printCourseInfo();
	}
}