在File类中并没有提供判断文件是否为空的方法,但可以借助length()方法的返回值进行判断。(推荐:java视频教程)
length()方法定义为:public long length()
如果文件不存在或文件为空时,length()方法返回0。
示例代码如下:
File file = new File("D:\\test.txt"); if(file.exists() && file.length)() == 0) { System.out.println("文件为空!"); }
更多java知识请关注java基础教程栏目。
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