public class ZipFolder {
ZipOutputStream zos; // Output stream for destination zip file.
ZipFolder(File src, File des) {
zipData(src,des);
}
public static void main(String args[]) {
try {
File src = new File(args[0]);
File des = new File(args[1]);
if(!args[1].toLowerCase().substring(args[1].length() - 4, args[1].length()).equalsIgnoreCase(".zip")) throw new ArrayIndexOutOfBoundsException();
new ZipFolder(src,des);
} catch (ArrayIndexOutOfBoundsException aioobe) {
System.out.println("The Usage of this command:\n ZipFolder \n Ex: ZipFolder c:\\backup c:\\feb2002.zip");
}
}
public void zipData(File source,File destination) {
try {
File zipfile = new File(destination.getPath());
zos = new ZipOutputStream( new FileOutputStream(zipfile));
File arrFile[];
arrFile = source.listFiles();
if (arrFile.length >0) {
checkFile(source); //Calling recursively
zos.close();
System.out.println("Winzip file is created successfully");
}
else
System.out.println("There is no file in the specified source");
}catch(Exception ze) {
System.out.println("Exception occured in zipping file. Details :\n" + ze.getMessage());
}
}
public void writeToZip(File src) throws DataFormatException, ZipException, FileNotFoundException, IOException {
// This function write s the data in to Zipoutput Stream.
byte b[] = new byte[512];
FileInputStream is = new FileInputStream(src);
ZipEntry ze = new ZipEntry(src.toString());
zos.putNextEntry(ze);
int len = 0;
while ((len =is.read(b))!= -1)
zos.write(b,0,len);
zos.closeEntry();
System.out.println("Zipping file " + src + " is done");
is = null;
}
public void checkFile(File fo) {
/*This is a recursive function. If the File object is a file then it calls the function
to write to zipoutput stream. If it is a directory it gets the list of file objects
in the child directory and calls itself
*/
try {
if(fo.isFile())
writeToZip(fo);
else {
File foarr[];
foarr = fo.listFiles();
for (int i=0; i checkFile(foarr[i]);
}
}catch(java.util.zip.DataFormatException dfe) {
System.out.println("Input data is not in proper format. Details :\n" + dfe.getMessage());
}catch(java.util.zip.ZipException ze) {
System.out.println("Exception occured in zipping file. Details :\n" + ze.getMessage());
}catch(java.io.FileNotFoundException fnfe) {
System.out.println("File is missing. Details :\n" + fnfe.getMessage());
}catch(java.io.IOException ioe) {
System.out.println("Input / Output problem. Details :\n" + ioe.getMessage());
}
}
}