本文译自Java read a file line by line – How Many Ways? 转载请注明出处。
Java中的I/O类非常多，什么时候该用什么类经常让人困惑。下面两段代码展示了如何一行一行的读取一个文件：
方法1：
private static void readFile1(File fin) throws IOException {
FileInputStream fis = new FileInputStream(fin);
//Construct BufferedReader from InputStreamReader
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
String line = null;
while ((line = br.readLine()) != null) {
System.out.println(line);
}
br.close();
}
方法2：
private static void readFile2(File fin) throws IOException {
// Construct BufferedReader from FileReader
BufferedReader br = new BufferedReader(new FileReader(fin));
String line = null;
while ((line = br.readLine()) != null) {
System.out.printl
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