java - 处理 FileReader 和 subString

Question

我正在尝试读取一个文件.txt，其中包含不同区域的 8 行商店。每行有 15 个字符。当我运行此代码时，仅打印第一行，然后抛出此错误:

Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 10
    at java.lang.String.substring(String.java:1951)

String line = "";
String region = "", name = "";
BufferedReader file = new BufferedReader(new FileReader("Stores.txt"));
line = file.readLine();
while (line != null) {
    region = line.substring(0, 10);
    name = line.substring(10);
    line = file.readLine();
    System.out.println("" + region + name);
}
file.close();

文件:

Montrèal   16890

New York   27659

Pittsburg  26657

California 11201

Virginia   32945

Seattle    33981

Colorado   10345

Answer 1

您不能跳过空行。试试这个:

String line = "";
String region = "", name = "";
BufferedReader file = new BufferedReader(new FileReader("Stores.txt"));
line = file.readLine();
while (line != null) {
    if (!line.isEmpty()) {
        region = line.substring(0, 10);
        name = line.substring(10);
        System.out.println("" + region + name);
    }
    line = file.readLine();
}
file.close();