Delete File_java

import java.io.File;

public class DeleteSvn {

    /**
     * @param args
     */
    public static void main(String[] args) {
        String a = args[0];
        if (a == null || a.trim().length() == 0) {
            System.out.println("input error args.");
            return;
        }
        File file = new File(a);
        if (file.isFile()) {
            System.out.println(a + "is a file.");
            return;
        }

        process(file);

    }

    private static void process(File file) {
        File[] fs = file.listFiles();
        if (fs != null) {
            for (File f : fs) {
                if (f.isDirectory()) {
                    if (".svn".equalsIgnoreCase(f.getName())) {
                        deleteFile(f);
                        f.delete();
                    } else {
                        process(f);
                    }
                }
            }
        }
    }

    private static void deleteFile(File file) {
        File[] fs = file.listFiles();
        if (fs != null) {
            for (File f : fs) {
                if (f.isDirectory()) {
                    deleteFile(f);
                    f.delete();
                } else {
                    if (f.delete()) {
                        System.out.println(f.getAbsolutePath() + "is delete sucessful.");
                    } else {
                        System.out.println(f.getAbsolutePath() + "is delete unsucessful.");
                    }
                }
            }
        }
    }
}