java获取指定后缀名的文件

 

public class IOTest {
    public static void main(String[] args) {
        File file = new File("D:/"); //获得指定路径
        FileFilter fileFilter = new FileFilter("xml"); //文件的后缀名
        String[] files = file.list(fileFilter);
        for(String fileName : files) {
            System.out.println(fileName);
        }
    }
}

class FileFilter implements FilenameFilter { //实现FilenameFilter接口
    private String fileExtension;

    public FileFilter(String fileExtension) {
        this.fileExtension = fileExtension;
    }

    public boolean accept(File dir, String name) {
        return name.endsWith("." + fileExtension);
    }
}