java 文件、文件夾復制
阿新 • • 發佈:2018-07-20
pre nal get stream finally 復制 class read write
文件復制
public static void copyFile(String oldPath, String newPath) throws IOException { FileInputStream in = null; FileOutputStream out = null; try { File oldFile = new File(oldPath); File file = new File(newPath); in = new FileInputStream(oldFile); out= new FileOutputStream(file);; byte[] buffer=new byte[1024]; int n=0; while((n=in.read(buffer))!=-1){ out.write(buffer,0,n); } } finally { if(null!=out) { out.close(); }if(null!=in) { in.close(); } } }
文件夾復制
public static void copyDir(String oldPath, String newPath) throws IOException { File oldFile = new File(oldPath); File[] listFiles = oldFile.listFiles(); File newFile = new File(newPath);if (!newFile.exists()) { newFile.mkdir(); } for (File file : listFiles) { if (file.isDirectory()) { copyDir(file.getPath(), newPath.concat(File.separator).concat(file.getName())); } if (file.isFile()) { copyFile(file.getPath(), newPath.concat(File.separator).concat(file.getName())); } } }
java 文件、文件夾復制