Why is my Zip file being created with size of O KB?

Question

I have the following code
public static int createZip (String directory)
                   throws IOException {
     File path = new File( directory );
     File outZip = new File("c:\\wip\\sams9dbExport.zip");
     boolean boo = outZip.createNewFile();
     FilenameFilter filter = new FilenameFilter() {
        public boolean accept(File dir, String name) {
            return name.endsWith(".xml");
    if ( outZip.exists() ) System.out.println("File exists");
     System.out.println(" Files and filters made");
     // These are the files to include in the ZIP file
     String[] fileList = path.list(filter);
    // Create a buffer for reading the files
    byte[] buf = new byte[1024];
    try {
        // Create the ZIP file
        String outFilename = "sams9dbExport.zip";
        ZipOutputStream out = new ZipOutputStream( new FileOutputStream( outFilename ) );
        // Compress the files
        for ( int i=0; i < fileList.length; i++ ) {
            FileInputStream in = new FileInputStream( "c:\\wip\\"+fileList[i] );
             System.out.println( fileList[i] );
            // Add ZIP entry to output stream.
            out.putNextEntry( new ZipEntry( "c:\\wip\\"+fileList[i] ) );
            System.out.println("Added an entry");
            // Transfer bytes from the file to the ZIP file
            int len;
            while ( ( len = in.read( buf ) ) > 0 ) {
                out.write( buf, 0, len );
            // Complete the entry
            out.closeEntry();
            in.close();
        // Complete the ZIP file
         out.close();
    } catch (IOException e) {
         System.out.println( e.toString() );
         return 0;
    return 1;
}And I get the following output
SQL> @ziptest
File exists
Files and filters made
AH_QUERY.xml
Added an entry
myclob.xml
Added an entry
myclob1.xml
Added an entry
myclob2.xml
Added an entry
PERSONNEL.xml
Added an entry
PERS_ALG.xml
Added an entry
sampledoc.xml
Added an entry
ut_ah_query1.xml
Added an entry
ut_provider.xml
Added an entry
PL/SQL procedure successfully completed.
SQL>
But my file is created empty. I previously added a println statement in the while loop to see if it was reading and writing bytes and it was.
Any ideas?

Answer 1

I have the following code
public static int createZip (String directory)
throws IOException {
File path = new File( directory );
File outZip = new
= new File("c:\\wip\\sams9dbExport.zip");
boolean boo = outZip.createNewFile();So these two lines will create sams9dbExport.zip with size 0 bytes, if file didn't exist.
No need to do that....
try {
// Create the ZIP file
String outFilename = "sams9dbExport.zip";
ZipOutputStream out = new ZipOutputStream(
tStream( new FileOutputStream( outFilename ) );Probably you are looking a wrong "sams9dbExport.zip" -file. Your application will create two "sams9dbExport.zip"-files, one into wip-folder with 0 bytes, and other into default directory.
>
But my file is created empty. I previously added a
println statement in the while loop to see if it was
reading and writing bytes and it was.
Any ideas?