file工具类

import java.io.*;
 * @author yh
 * 文件工具类
 */
public class FileUtil {
	
	 * @param fromFileName 原文件
	 * @param toFileName 目标文件
	 * @return 是否删除成功
	 * 实现文件的拷贝
	 */
	@SuppressWarnings("unused")
	public static boolean copyFile(String fromFileName, String toFileName) throws Exception {
		File fromFile = new File(fromFileName);
		File toFile = new File(toFileName);
		fromFile.exists();
		//如果原文件不存在返回false
		if(!fromFile.isFile()) {
			return false;
		}
		//如果目标文件不存在，则创建
		if(!toFile.isFile()) {
			toFile.createNewFile();
		}
		
		InputStream in = new BufferedInputStream(new FileInputStream(fromFile));
		OutputStream out = new BufferedOutputStream(new FileOutputStream(toFile));
		
		byte[] buf = new byte[64];
		int len = 0;
		
		while( (len = in.read(buf) ) != -1 ) {
			out.write(buf, 0, len);
			out.flush();
		}
		
		in.close();
		out.close();
		return true;
	}
	
	
	 * @param name 待删除文件
	 * @return 是否删除成功
	 * 伪实现删除文件功能
	 */
	public static boolean deleteFile(String name) throws Exception {
		File file = new File(name);
		if(!file.exists()) {
			
			return false;
		}
		file.delete();
		return true;
	}
}