我想要把一个目录下的档案加总并输出的问题

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import java.io.File;
 
public class FileSize { public long getSize(String afile){ File f1 = new File(afile); long length = f1.length(); return length; } public File[] getFile(String bfile){ File f2 = new File(bfile); File s[] = f2.listFiles(); return s; } public static void main(String args[]){ String dirname="D:\\workspace\\javatest\\src\\t4"; long ddd =0; FileSize aaa = new FileSize(); File[] aaa1 = aaa.getFile(dirname); for(int i=0; i<aaa1.length; i++){ File bbb = aaa1[i]; long ccc = aaa.getSize(bbb.getAbsolutePath()); ddd += ccc; } System.out.println(ddd); } }

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http://h881068.pixnet.net/blog/post/4813192-java%E5%8D%B0%E5%87%BA%E6%89%80%E6%9C%89%E6%A0%B9%E7%9B%AE%E9%8C%84%E5%8F%8A%E5%AD%90%E8%B3%87%E6%96%99%E5%A4%BE%E7%9A%84%E6%89%80%E6%9C%89%E6%AA%94%E6%A1%88