JavaIO流——简单对文件的写入及读取

Posted 2021-02-17 zdsmeetheron190227

已经讲了写入和读取了，那么想要把一个文件的内容复制到另一个文件呢

不说太多，直接见代码

public static void copyFile(String srcFilename, String destFilename) throws IOException {
        FileReader fReader = new FileReader(srcFilename);
        FileWriter fWriter = new FileWriter(destFilename);
        
        char[] buffer = new char[1024];
        int len = 0;
        while((len = fReader.read(buffer)) != -1) {
            fWriter.write(buffer);
        }
        fReader.close();
        fWriter.close();
        System.out.println("done");
    }

然后，调用的时候是这样

copyFile("C:\Users\Administrator\Desktop\whereveryouare.txt", "C:\Users\Administrator\Desktop\Favourite.txt");

最简单的复制就这样了。