使用.split()报错数组越界怎么处理？

Question

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("总成绩平均分为："+ totalScoreAvg);in.close();       }

Answer 1

在写出这种取具体数组下标语句前，我有个建议，先判断下数组长度。

目前该问题描述的代码是因为该字符串不符合程序预期的长度[文件中体现的分数没有超过2个  /t]

Answer 2

已解决