FilenameFilter过滤目录下文件

编写一个实现FilenameFilter接口的类

public class TxtFilter implements FilenameFilter {
	public boolean isTxt(String file) {
		if (file.toLowerCase().endsWith(".txt")) {
			return true;
		} else {
			return false;
		}
	}

	public boolean accept(File dir, String name) {
		return isTxt(name);
	}
}

测试程序如下:

public class DirList {
	public static void main(String[] args) {
		File path = new File("E:\\");
		String[] list;
		list = path.list(new TxtFilter());
		Arrays.sort(list, String.CASE_INSENSITIVE_ORDER);
		for (String dirItem : list)
			System.out.println(dirItem);
	}
}