File file = new File("D:/file.txt");if(file.exists() && file.length)() == 0) {System.out.println("文件为空!");}
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File file = new File("D:/file.txt");if(file.exists() && file.length)() == 0) {System.out.println("文件为空!");}
本文链接:https://my.lmcjl.com/post/8756.html
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