IO操作文件内容打印到控制台，将文件内容复制到另外一个文件

package com.yyj.jan.io;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.OutputStreamWriter;public class FileUtil {public static void main(String[] args) {String url = "D:/CrackCaptcha.log";//fileOperate(url);File file = new File(url);fileCopy(file);File newfile = new File("d:/rrrr.log");newFileCopy(file,newfile);}/** * 文件的拷贝 * @author yeyuanjin * @data 2017年7月27日 * @param url */public static void fileOperate(String url){File file  = new File(url);InputStream in = null;try {if(!file.exists()){file.createNewFile();}in = new FileInputStream(file);byte[] buff = new byte[1024];int length = 0;while((length=in.read(buff))!=-1){System.out.println(new String(buff,0,length));}} catch (Exception e) {}finally{try {if(in!=null){in.close();}} catch (Exception e2) {// TODO: handle exception}}}/** * 文件的拷贝2 * @author yeyuanjin * @data 2017年7月27日 * @param file */public static void fileCopy(File file){String positionUrl = "D:/ddddd.txt";//创建文件输出目标文件File newFile = new File(positionUrl);InputStream in = null;OutputStream out = null;try {if(!newFile.exists()){newFile.createNewFile();}int length = 0;byte[] buff = new byte[1024];in = new FileInputStream(file);out = new FileOutputStream(newFile);while((length=in.read(buff))!=-1){out.write(buff,0,length);}} catch (IOException e) {e.printStackTrace();}finally{try {if(null!=out){out.close();}if(null!=in){in.close();}} catch (Exception e2) {}}}public static void newFileCopy(File fileIn,File fileOut){InputStreamReader in = null;OutputStreamWriter out  = null;BufferedReader reader = null;BufferedWriter writer = null;try{reader = new BufferedReader(new InputStreamReader(new FileInputStream(fileIn),"ISO-8859-1"));writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(fileOut),"ISO-8859-1"));String line = null;while((line=reader.readLine())!=null){writer.write(line);writer.newLine();}}catch  (IOException e){}finally{try {if(null!=writer){writer.close();}if(null!=reader){reader.close();}if(null!=out){out.close();}if(null !=in){in.close();}} catch (Exception e2) {// TODO: handle exception}}}}