file copying in java

The first: use Java7's Files class to copy

                        File dd=new File("D:/Tomcat7.0/webapps/ROOT1523957275296.xml");
File dd2=new File("D:/Tomcat7.0/webapps/333.xml");

Files.copy(dd.toPath(),dd2.toPath());

The second: use Commons IO replication

                        File dd=new File("D:/Tomcat7.0/webapps/ROOT1523957275296.xml");
File dd2=new File("D:/Tomcat7.0/webapps/333.xml");
FileUtils.copyFile(dd, dd2);

Third: Copy using FileChannel

                        File dd=new File("D:/Tomcat7.0/webapps/config.xml");
File dd2=new File("D:/Tomcat7.0/webapps/444.xml");
FileChannel inputStream=null;
     FileChannel outStream=null;
     try {
inputStream = new FileInputStream(dd).getChannel();
outStream=new FileOutputStream(dd2).getChannel();
outStream.transferFrom(inputStream, 0, inputStream.size());
} catch (Exception e) {
e.printStackTrace();
}finally{
if(null!=outStream){
try {
outStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(null!=inputStream){
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace ();
}
}
}

Fourth: copy using BufferedReader

                        File dd=new File("D:/Tomcat7.0/webapps/config.xml");
File dd2=new File("D:/Tomcat7.0/webapps/44.xml");BufferedReader br=null;BufferedWriter bw=null;try {br=new BufferedReader(new FileReader(dd));bw=new BufferedWriter(new FileWriter(dd2));String line=null;while((line=br.readLine())!=null){bw.write(line+"\n");}bw.flush();} catch (Exception e) {e.printStackTrace();}finally{if(null!=bw){try {bw.close();} catch (IOException e) {e.printStackTrace();}}if(null!=br){try {br.close();























} catch (IOException e) {
e.printStackTrace();
}
}
}

Fifth: Copy using FileStreams

                        File dd=new File("D:/Tomcat7.0/webapps/config.xml");
File dd2=new File("D:/Tomcat7.0/webapps/555.xml");
InputStream iputStream=null;
OutputStream outStream=null;
try {
iputStream=new FileInputStream(dd);
outStream = new FileOutputStream(dd2);
byte[] byteData=new byte[1024];
int byteRead=0;
while((byteRead=iputStream.read(byteData))>0){
outStream.write(byteData, 0, byteRead);
}
outStream.flush();
} catch (Exception e) {
e.printStackTrace();
}finally{
if(null!=outStream){
try {
outStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(null!=iputStream){
try {
iputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}