public?static?void?showTotalScoreAvg()?throws?IOException{ ????????????double?sum?=?0; ????????????BufferedReader?in?=?new?BufferedReader(new?FileReader(path)); ????????????String?studentScore; ????????????while((studentScore?=?in.readLine())?!=?null) ????????????{ ????????????????double?mathScore?=?Double.parseDouble(studentScore.split("\t")[2]); ????????????????double?englishScore?=?Double.parseDouble(studentScore.split("\t")[3]); ????????????????double?computerScore?=?Double.parseDouble(studentScore.split("\t")[4]); ????????????????double?totalScore?=?mathScore?+?englishScore?+computerScore; ????????????????sum?=?sum?+?totalScore; ????????????????count++; ????????????????if(MinTotalScore?>?totalScore) ????????????????{ ????????????????????MinTotalScore?=?totalScore; ????????????????} ????????????????if(MaxTotalScore?<?totalScore) ????????????????{ ????????????????????MaxTotalScore?=?totalScore; ????????????????} ????????????????studentScore?=?in.readLine(); ????????????} ????????????double?totalScoreAvg?=?sum/(double)count; ????????????System.out.println("總成績(jī)平均分為："+?totalScoreAvg);in.close(); ??????}