标签:文件 dest dll 几种 source File new 拷贝 Desktop
public class CopyFile1 { private static void copyFileUsingFileStreams(File source, File dest) throws IOException { InputStream input = null; OutputStream output = null; try { input = new FileInputStream(source); output = new FileOutputStream(dest); byte[] buf = new byte[1024]; int bytesRead; while ((bytesRead = input.read(buf)) > 0) { output.write(buf, 0, bytesRead); } } finally { input.close(); output.close(); } } private static void copyFileUsingFileChannels(File source, File dest) throws IOException { FileChannel inputChannel = null; FileChannel outputChannel = null; try { inputChannel = new FileInputStream(source).getChannel(); outputChannel = new FileOutputStream(dest).getChannel(); outputChannel.transferFrom(inputChannel, 0, inputChannel.size()); } finally { inputChannel.close(); outputChannel.close(); } } private static void copyFileUsingApacheCommonsIO(File source, File dest) throws IOException { // FileUtils.copyFile(source, dest); } private static void copyFileUsingJava7Files(File source, File dest) throws IOException { Files.copy(source.toPath(), dest.toPath()); } public static void main(String[] args) throws IOException { //copyFileUsingFileStreams(new File("C:\\Users\\w_wangsh\\Desktop\\a\\20210625\\CashReport.dll"),new File("C:\\Users\\w_wangsh\\Desktop\\a\\20210625\\CashReport2.dll")); //copyFileUsingFileChannels(new File("C:\\Users\\w_wangsh\\Desktop\\a\\20210625\\CashReport.dll"),new File("C:\\Users\\w_wangsh\\Desktop\\a\\20210625\\CashReport2.dll")); copyFileUsingJava7Files(new File("C:\\Users\\w_wangsh\\Desktop\\a\\20210625\\CashReport.dll"),new File("C:\\Users\\w_wangsh\\Desktop\\a\\20210625\\CashReport2.dll")); }
标签:文件,dest,dll,几种,source,File,new,拷贝,Desktop 来源: https://www.cnblogs.com/361ky/p/15176445.html
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