Spostare un file in un altra Directory
Scritto da Administrator
Mercoledì 13 Ottobre 2010 15:00 - Ultimo aggiornamento Mercoledì 13 Ottobre 2010 21:04
Java - Spostare un file in un altra Directory
Il metodo seguente mostra come spostare un file da una directory ad un'altra directory:
{codecitation style="brush: java;"} package it.soluzionijava.io; import
java.io.BufferedReader; 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 javax.swing.JOptionPane;
public class MovingFile { public static void main(String[] args) throws IOException { int a =
0;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter the file or directory name that has to be moved : ");
String src =
in.readLine();
if (src.equals("")) { System.out.println("Invalid directory or file name.");
System.exit(0); }
File source = new File(src); if (!source.exists()) {
System.out.println("File or directory does not exist."); System.exit(0); }
System.out.print("Enter the complete path where file or directory has to be moved: "); String
dest = in.readLine(); if (dest.equals("")) { System.out.println("Invalid directory or file name.");
System.exit(0); }
File destination = new File(dest); if (!destination.exists()) {
System.out.print("Mentioned directory does not exist.n"
+ "Do you want to create a new
directory(Y/N)? ");
String chk = in.readLine(); if (chk.equals("Y") || chk.equals("y")) {
destination.mkdir();
copyDirectory(source, destination);
a = 1; }else if (chk.equals("N") ||
chk.equals("n")) {
System.exit(0); }else {
System.out.println("Invalid Entry!");
System.exit(0); } }else { int num = JOptionPane.showConfirmDialog(null,
"Given file
or folder name already exists. nDo you want to replace now?");
if (num == 0) {
copyDirectory(source, destination);
a = 1; } } if (a == 1) { System.out.println("File or
directory moved successfully."); if (!delete(source)) {
throw new IOException("Unable to
delete original folder"); } } else if (a == 0) { System.exit(0); } } public static void
copyDirectory(File sourceDir, File destDir) throws IOException { if (!destDir.exists()) {
destDir.mkdir(); }
File[] children = sourceDir.listFiles(); for (File sourceChild : children) {
String name = sourceChild.getName(); File destChild = new File(destDir, name); if
(sourceChild.isDirectory()) {
copyDirectory(sourceChild, destChild); }else {
copyFile(sourceChild, destChild); } } } public static void copyFile(File source, File dest)
throws IOException { if (!dest.exists()) { dest.createNewFile(); }
InputStream in = null;
OutputStream out = null; try { in = new FileInputStream(source); out = new
FileOutputStream(dest); byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) >
0) {
out.write(buf, 0, len); } } finally { in.close(); out.close(); } } public static
boolean delete(File resource) throws IOException { if (resource.isDirectory()) { File[]
childFiles = resource.listFiles(); for (File child : childFiles) {
delete(child); } } return
resource.delete(); } } {/codecitation}
1/2
Spostare un file in un altra Directory
Scritto da Administrator
Mercoledì 13 Ottobre 2010 15:00 - Ultimo aggiornamento Mercoledì 13 Ottobre 2010 21:04
2/2
