[JAVA]标准IO流操作
import java.io.*; /** * @Description: * @projectName:JavaTest * @see:PACKAGE_NAME * @author:郑晓龙 * @createTime:2019/5/2 22:41 * @version:1.0 */ public class CopyFile { public static void main(String[] args) { copy("d:/abc.txt","d:/def.txt"); } public static void copy(String source, String target) { // 1、创建源 File src = new File(source); File dest = new File(target); // 2、选择流 InputStream is = null; OutputStream os = null; try { is = new FileInputStream(src); os = new FileOutputStream(dest); // 3、操作流 byte[] buf = new byte[1024]; int len; while ((len = is.read(buf)) != -1) { os.write(buf, 0, len); } os.flush(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { //4、关闭流(先打开的后关闭) if (os != null) { try { os.close(); } catch (IOException e) { e.printStackTrace(); } } if (is != null) { try { is.close(); } catch (IOException e) { e.printStackTrace(); } } } } }