class ShowTotalMessage{	//顯示學生所有資訊
	public static void showTotalMessage(Student student1) {
		System.out.println("該同學id： "+student1.getid());
		System.out.println("該同學姓名："+student1.getname());
		System.out.println("該同學性別："+student1.getsex());
		System.out.println("該同學年齡："+student1.getsage());
	}
}
public class Student {
	private String id,name="張傑",sex="男";//分別是學號，姓名，性別。
	private int age=20;	//年齡
	private int computerScore=0;	//表示計算機課程的成績
	private int englishScore=0;	//表示英語課的成績
	private int mathScore=0;	//表示數學課的成績
	private int totalCredit=0;	//表示總學分, 90分及以上2學分，60及以上90以下1.5學分，不及格無學分
	private int aveScore=0;	//表示平均成績,平均成績等於已有成績的課程除以課程數，0分表示無此門課成績
/*獲得*/	
	String getid(){		//獲得當前物件的學號
		return id;
	}
	String getname(){		//獲得當前物件的姓名
		return name;
	}
	String getsex(){		//獲得當前物件的性別
		return sex;
	}
	int getsage(){		//獲得當前物件的性別
		return age;
	}
	int getComputerScore(){		//獲得當前物件的計算機課程成績
		return computerScore;
	} 
	int getMathsScore(){		//獲得當前物件的數學課程成績
		return mathScore;
	}
	int getEnglishScore(){		//獲得當前物件的英語課程成績
		return englishScore;
	}	
	int getTotalCredit() {
		return totalCredit;
	}
	int getTveScore() {
		return aveScore;
	}
/*設定*/
	void setid(String id){		//設定當前物件的id值
		this.id = id;
	} 
	void setComputerScore(int computerScore){	//設定當前物件的computerScore值,在設定此值時修改總學分和平均成績
		this.computerScore = computerScore;
		this.totalCredit=computerScore+mathScore+englishScore;
		this.aveScore=(computerScore+mathScore+englishScore)/3;
	} 
	void setEnglishScore(int englishScore){	//設定當前物件的englishScore值,在設定此值時修改總成績和平均成績
		this.englishScore=englishScore;
		this.totalCredit=computerScore+mathScore+englishScore;
		this.aveScore=(computerScore+mathScore+englishScore)/3;
	}
	void setMathScore(int mathScore){	//設定當前物件的mathScore值,在設定此值時修改總成績和平均成績
		this.mathScore=mathScore;
		this.totalCredit=computerScore+mathScore+englishScore;
		this.aveScore=(computerScore+mathScore+englishScore)/3;
	}
/*刪除*/
	void delComputerScore(){	//刪除當前物件的computerScore值,在刪除此值時修改總學分和平均成績
		this.computerScore = 0;
		this.totalCredit=computerScore+mathScore+englishScore;
		this.aveScore=(computerScore+mathScore+englishScore)/3;
	}
	void delEnglishScore(){	//刪除當前物件的englishScore值,在刪除此值時修改總成績和平均成績
		this.englishScore = 0;
		this.totalCredit=computerScore+mathScore+englishScore;
		this.aveScore=(computerScore+mathScore+englishScore)/3;
	}
	void delMathScore(){	//刪除當前物件的mathScore值,在刪除此值時修改總成績和平均成績
		this.mathScore = 0;
		this.totalCredit=computerScore+mathScore+englishScore;
		this.aveScore=(computerScore+mathScore+englishScore)/3;
	}
	public static void main(String []grgs){		//String []grgs不能刪，否則無法成功執行
		Student student1 = new Student();
		
		student1.setid("20178888");
		student1.setComputerScore(66);
		student1.setEnglishScore(66);
		student1.setMathScore(66);
		
		System.out.print("hello world\n");
		System.out.print("顯示該學生所有資訊：");
		ShowTotalMessage.showTotalMessage(student1);
		System.out.print("該學生計算機成績：");
		System.out.println(student1.getComputerScore());
		System.out.print("該學生英語成績：");
		System.out.println(student1.getEnglishScore());
		System.out.print("該學生數學成績：");
		System.out.println(student1.getEnglishScore());
		System.out.println("總成績：   "+student1.getTotalCredit());
		System.out.println("平均成績： "+student1.getTveScore());
		System.out.print("進行刪除動作：\n");
		System.out.print("刪除計算機成績：\n");
		student1.delComputerScore();
		System.out.println("總成績：   "+student1.getTotalCredit());
		System.out.println("平均成績： "+student1.getTveScore());
		System.out.print("刪除英語成績：\n");
		student1.delEnglishScore();
		System.out.println("總成績：     "+student1.getTotalCredit());
		System.out.println("平均成績：   "+student1.getTveScore());
		System.out.print("刪除數學成績：\n");
		student1.delMathScore();
		System.out.println("總成績：    "+student1.getTotalCredit());
		System.out.println("平均成績：  "+student1.getTveScore());
		
	}
}