java - 如何给出 Eclipse 的固定路径

Question

代码:

InputStream inputStream = System.in;
InputReader in = new InputReader(inputStream);

如何修改此代码以从固定位置获取文件？

等效扫描仪示例:

Scanner in = new Scanner(new InputStreamReader(System.in));
Scanner in = new Scanner(new FileReader("C:\\Users\\Max\\Desktop\\yes.txt"));

Answer 1

如果您只想将整个文本包含在一个字符串中，则可以使用FileInputStream

FileInputStream inputStream = new FileInputStream("foo.txt");
try {
    String everything = IOUtils.toString(inputStream);
} finally {
    inputStream.close();
}

如果您想逐行读取文件，请使用 BufferdReader 与 StringBuilder 连接

BufferedReader br = new BufferedReader(new FileReader("file.txt"));
try {
    StringBuilder sb = new StringBuilder();
    String line = br.readLine();

while (line != null) {
    sb.append(line);
    sb.append(System.lineSeparator());
    line = br.readLine();
}
String everything = sb.toString();

}finally {
    br.close();
}

注意:

这些示例取自@Knubo，完整答案和更多信息可以在 here 中找到。