下面的示例向您展示如何使用java.nio.channels.FileChannel该类复制文件。
package org.nhooo.example.io; import java.io.*; import java.nio.channels.FileChannel; public class FileCopy { public static void main(String[] args) { //// 定义源文件和目标文件 File source = new File("D:/Temp/source.txt"); File target = new File("D:/Temp/target.txt"); // 创建源通道和目标通道 try (FileChannel sourceChannel = new FileInputStream(source).getChannel(); FileChannel targetChannel = new FileOutputStream(target).getChannel()) { // 将数据从源通道复制到目标通道 targetChannel.transferFrom(sourceChannel, 0, sourceChannel.size()); } catch (Exception e) { e.printStackTrace(); } } }