mathstudent.java

此系统可用于对学生成绩进行简单管理

import javax.swing.JOptionPane;
class SoftwareStudent extends Student{
	    
	    private int jiSuanFangFaGrade=0;
		private int javaProgrammingGrade=0;
		private int liSanGrade=0;
		private int oSystemGrade=0;
	    
		private final int GAO_SHU_POINT=6;
		private final int YING_YU_POINT=4;
		private final int DA_XUE_YU_WEN_POINT=2;
		private final int MEI_XUE_JIAN_SHANG_POINT=2;
		private final int MA_ZHE_POINT=2;
		private final int DENG_LUN_POINT=2;
		private final int MAO_GAI_POINT=2;
		private final int DA_XUE_WU_LI_POINT=4;
		private final int TI_YU_POINT=2;
		private final int XIAN_DAI_POINT=3;
		private final int GAI_LV_POINT=3;
		private final int JI_SUAN_FANG_FA_POINT=4;
		private final int JAVA_PROGRAMMING=2;
		private final int LI_SAN=4;
		private final int O_SYSTEM=4;
		
	    /*public ScienceStudent()
	    {
	 	       System.out.println("ScienceStudent's constractor!");
	    }*/
	    
		private void setJiSuanFangFaGrade(int temp)
		{
		    if(temp<0|temp>100)
		    {
		        JOptionPane.showMessageDialog(null,"Invalid Gaoshu Grade:"+temp+
		        "\nProgram Terminating!");
		        return;	
		    }
		    else jiSuanFangFaGrade=temp;
		}
		public int getjiSuanFangFa()
		{
			return jiSuanFangFaGrade;
	    }
	    
	    private void setJavaProgrammingGrade(int temp)
		{
		    if(temp<0|temp>100)
		    {
		        JOptionPane.showMessageDialog(null,"Invalid Gaoshu Grade:"+temp+
		        "\nProgram Terminating!");
		        return;	
		    }
		    else javaProgrammingGrade=temp;
		}
		public int getJavaProgrammingGrade()
		{
			return javaProgrammingGrade;
	    }
	    
	    private void setLiSanGrade(int temp)
		{
		    if(temp<0|temp>100)
		    {
		        JOptionPane.showMessageDialog(null,"Invalid Gaoshu Grade:"+temp+
		        "\nProgram Terminating!");
		        return;	
		    }
		    else liSanGrade=temp;
		}
		public int getLiSanGrade()
		{
			return liSanGrade;
	    }
	    
	    private void setOSystemGrade(int temp)
		{
		    if(temp<0|temp>100)
		    {
		        JOptionPane.showMessageDialog(null,"Invalid Gaoshu Grade:"+temp+
		        "\nProgram Terminating!");
		        return;	
		    }
		    else oSystemGrade=temp;
		}
		public int getOSystemGrade()
		{
			return oSystemGrade;
	    }
	    
	   public void calculateGradePoint()  //GUI version
	   {
   	          double temp=getSubjectPoint(gaoShuGrade)*GAO_SHU_POINT+
   	                          getSubjectPoint(yingYuGrade)*YING_YU_POINT+
   	                          getSubjectPoint(daXueYuWenGrade)*DA_XUE_YU_WEN_POINT+
   	                          getSubjectPoint(meiXueJianShangGrade)*MEI_XUE_JIAN_SHANG_POINT+
   	                          getSubjectPoint(maZheGrade)*MA_ZHE_POINT+
   	                          getSubjectPoint(dengLunGrade)*DENG_LUN_POINT+
   	                          getSubjectPoint(maoGaiGrade)*MAO_GAI_POINT+
   	                          getSubjectPoint(daXueWuLiGrade)*DA_XUE_WU_LI_POINT+
   	                          getSubjectPoint(tiYuGrade)*TI_YU_POINT+
   	                          getSubjectPoint(xianDaiGrade)*XIAN_DAI_POINT+
   	                          getSubjectPoint(gaiLvGrade)*GAI_LV_POINT+
   	                          getSubjectPoint(jiSuanFangFaGrade)*JI_SUAN_FANG_FA_POINT+
   	                          getSubjectPoint(javaProgrammingGrade)*JAVA_PROGRAMMING+
   	                          getSubjectPoint(liSanGrade)*LI_SAN+
   	                          getSubjectPoint(oSystemGrade)*O_SYSTEM;
   	           finalGradePoint=temp/(GAO_SHU_POINT+YING_YU_POINT+DA_XUE_YU_WEN_POINT+
	                                 MEI_XUE_JIAN_SHANG_POINT+MA_ZHE_POINT+DENG_LUN_POINT+
	                                 MAO_GAI_POINT+DA_XUE_WU_LI_POINT+TI_YU_POINT+
	                                 XIAN_DAI_POINT+GAI_LV_POINT+JI_SUAN_FANG_FA_POINT+
	                                 JAVA_PROGRAMMING+LI_SAN+O_SYSTEM);
	   	                          
	   	                          
	    	      
    	      if(finalGradePoint>=4)
    	      finalLetterGrade="A";
    	      else 
    	      if((finalGradePoint>=3)&(finalGradePoint<4))
    	      finalLetterGrade="B";
    	      else 
    	      if((finalGradePoint>=2)&(finalGradePoint<3))
    	      finalLetterGrade="C";
    	      else 
    	      if((finalGradePoint>=1)&(finalGradePoint<2))
    	      finalLetterGrade="D";
    	      if(finalGradePoint<1)
    	      finalLetterGrade="F";
	   }
}