import java.io.*;

public class CSVFile0 {
  public static void main(String[] args) throws IOException {
    FileReader fr = null;
    StringBuilder sb = new StringBuilder();
    try {
      fr = new FileReader("CSVnumbers0.csv");
      int charaInt = fr.read();
      while(charaInt != -1) {
        char chara = (char) charaInt;
        sb.append(chara);
        charaInt = fr.read();
      }
    } catch(IOException ex) {
      System.out.println("ファイル読み込みエラーです");
    } finally {
      try {
        fr.close();
      } catch(IOException ex2) {
        System.out.println("ファイルクロ―ズエラーです");
      }
    }
    String numbers = sb.toString();
    System.out.println(numbers);

    String[] numArray = numbers.split("[,]");
    int capaTotal = 0;
    for (int i = 0; i < numArray.length; i++) {
      capaTotal += Integer.parseInt(numArray[i]);
    }
    System.out.println("合計は" + capaTotal + "です");
  }
}