【代码积累】JAVA读某文件夹下所有txt类型文件

1、读取文件路径

public static List<String> getFileList(File file) {

		List<String> result = new ArrayList<String>();

		if (!file.isDirectory()) {
			System.out.println(file.getAbsolutePath());
			result.add(file.getAbsolutePath());
		} else {
			File[] directoryList = file.listFiles(new FileFilter() {
				public boolean accept(File file) {
					if (file.isFile() && file.getName().indexOf("txt") > -1) {
						return true;
					} else {
						return false;
					}
				}
			});
			for (int i = 0; i < directoryList.length; i++) {
				result.add(directoryList[i].getPath());
			}
		}

		return result;
	}

2、主函数操作所有文件

String FILE_IN = "F:\\Learning\\Hadoop\\hadoop data";
		File f = new File(FILE_IN);
		List<String> list = new ArrayList<String>();
		list = getFileList(f);

		System.out.println(list.size());
		
		for (String l : list) {
BufferedReader br = new BufferedReader(new FileReader(new File(l)));
			String line = br.readLine();

}