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