Convention of image file byte assignation..how?

May any one help me to rectify my following query
(1)While working with IO package's byte oriented stream,one query is arised in my mind..how can the image file converted into byte stream by assigning the byte as similar as while reading the text format file such as .txt,.doc,that can read char by char and assign each character as its unicode and finally that data to be writed into the file
eg)a file containing the texts:abc
That can be assigned to be:616263
Which means a->61,b->62,c->63
Eventually that can be write into another file as like as byte by byte
....My doubt is how the image file can assigning byte as similar as .txt file

An image file is binary, not text, of course. As long as you read it with an InputStream not a Reader no conversion is done.

Similar Messages

How do you reference image files in jsp which becomes a portlet ?

My portlet is a servlet managing jsp pages. In each of the jsp s, there are image files (*.gif) being referenced. I have placed the image files in .../public_html/WEB-INF/images/ in explorer. In my jsp, I am referencing the image file as
src="WEB-INF/images/help.gif"
On deploying my portlet, the image is not being picked up by the portal. Also, on moving the image and modifying the reference to it, I am still getting the same problem.
Can anyone advise, for my portlet to display the image correctly,
1) where should I place the image files ?
2) how should the jsp code reference it ?
Cheers,
Tara

Hi,
The behaviour you are reporting is an expected behaviour. If you want to include images in your JSP, you need to specify the complete absolute URL to the image on the midtier as only then can the portal invoke that image.
Actually, when you specified the relative URL
WEB-INF/images/help.gif, Oracle9iASPortal actually looks for the image help.gif in the directory structure WEB-INF/lib at its end. As no such file exists, the images are not rendered onto Oracle9iASPortal page.
So you got to use the following workaround,
Assuming your provider name is "temp" (deployed using temp.ear) & the image name is "help.gif" which is stored in the htdocs folder inside temp. This image is invoked by help.jsp
You can get the absolute path of this image as follows:
Request URL is : http://<host>:<port>/temp/providers/temp
Request URI is : /temp/providers/temp
So, Base URL = http://<host>:<port>
Servlet Path is : /temp/htdocs/help.jsp
Truncating the Servlet Path to /temp/htdocs & appending this to Base URL should give you
http://<host>:<port>/temp/htdocs
which is the directory that contains your image. add image name to this URL to get the absolute p[i]Long postings are being truncated to ~1 kB at this time.

Error -11003:Menu-Fail loading Image file

HI:
addMenus XML File:
<Application>
<Menus>
    <action type="add">
      <Menu Checked="0" Enabled="1" FatherUID="43520" Image="title.bmp" Position="14" String="Menus" Type="2" UniqueID="Menus">
        <Menus>
          <action type="add">
            <Menu Checked="0" Enabled="1" FatherUID="Menus" Image="" Position="0" String="Menu_1" Type="1" UniqueID="Menu_1" />
          </action>
        </Menus>
      </Menu>
    </action>
</Menus>
</Application>
when add the Image property , but continue error Error -11003:Menu-Fail loading Image file.
<h2>How to add images by using XML inside a B1DE project ? </h2>
Hope it helps
Jimmy.l

Hi
在你的xml文件中，image 属性设置错误，应该填写你所加的image的绝对路径
比如：
<Application>
<Menus>
<action type="add">
<Menu Checked="0" Enabled="0" FatherUID="43520" String="MyMenu1" Type="2" UniqueID="MyMenu1" Image="C:/MyPic.bmp">
<Menus>
<action type="add">
<Menu Checked="1" Enabled="0" FatherUID="MyMenu1" String="MySub1" Type="1" UniqueID="MySub1" />
</action>
</Menus>
</Menu>
<Menu Checked="0" Enabled="1" FatherUID="43520" String="MyMenu2" Type="2" UniqueID="MyMenu2" >
<Menus>
<action type="add">
<Menu Checked="0" Enabled="0" Position="0" FatherUID="MyMenu2" String="MySub21" Type="1" UniqueID="MySub21" />
</action>
</Menus>
</Menu>
</action>
</Menus>
</Application>

Problems getting Acronis True Image Home 2010 to find my image files.

I have recently purchased this A505-S6005 laptop and it has been nothing but a pain in the pretty much ever since I got it. Recently I have tried to roll back to a previous system image I created with Acronis True Image Home 2010 but am unsuccessful everytime I make the attempt.
Everytime I try to recover from the previous image which I have saved on a external drive I get an error message "Cannot find any hard disk drives" upon startup of the Acronis recovery manager. I get this problem no matter which way I go around it either from the boot cd that I created or directly from Windows and the Acronis software.
I simply cannot restore from my image file no matter how hard i try to get it to work.
Does anyone else have these issues with Acronis True Image 2010?

Satellite A505-S6005
Best to post in the Acronis forums.
-Jerry

How can I assign image file name from Main() class

I am trying to create library class which will be accessed and used by different applications (with different image files to be assigned). So, what image file to call should be determined by and in the Main class.
Here is the Main class
import org.me.lib.MyJNIWindowClass;
public class Main {
public Main() {
public static void main(String[] args) {
MyJNIWindowClass mw = new MyJNIWindowClass();
mw.s = "clock.gif";
And here is the library class
package org.me.lib;
public class MyJNIWindowClass {
public String s;
ImageIcon image = new ImageIcon("C:/Documents and Settings/Administrator/Desktop/" + s);
public MyJNIWindowClass() {
JLabel jl = new JLabel(image);
JFrame jf = new JFrame();
jf.add(jl);
jf.setVisible(true);
jf.pack();
I do understand that when I am making reference from main() method to MyJNIWindowClass() s first initialized to null and that is why clock could not be seen but how can I assign image file name from Main() class for library class without creating reference to Main() from MyJNIWindowClass()? As I said, I want this library class being accessed from different applications (means different Main() classes).
Thank you.

Your problem is one of timing. Consider this simple example.
public class Example {
    public String s;
    private String message = "Hello, " + s;
    public String toString() {
        return message;
    public static void main(String[] args) {
        Example ex = new Example();
        ex.s = "world";
        System.out.println(ex.toString());
}When this code is executed, the following happens in order:
1. new Example() is executed, causing an object to constructed. In particular:
2. field s is given value null (since no value is explicitly assigned.
3. field message is given value "Hello, null"
4. Back in method main, field s is now given value "world", but that
doesn't change message.
5. Finally, "Hello, null" is output.
The following fixes the above example:
public class Example {
    private String message;
    public Example(String name) {
        message = "Hello, " + name;
    public String toString() {
        return message;
    public static void main(String[] args) {
        Example ex = new Example("world");
        System.out.println(ex.toString());
}

How can I edit lightroom 5 smart previews on mac book pro (mbp) when the lightroom 5 master image files are on my external hard drive is disconnected from the mbp

How can I edit lightroom 5 smart previews on mac book pro (mbp) when the lightroom 5 master image files are on my external hard drive is disconnected from the mbp? So far when I try to disconnect the external HD from the mbp, I get the following pop up window: The disk "external hard drive A" couldn't be ejected because "Lightroom" is using it. Quit that application and try to eject this disk again. When I do that and restart Lightroom 5, the Adobe Photoshop Lightroom - Select Catalog screen pops up but doesn't list my external hard drive A as a choice.
I've reviewed Adobe's Lightroom Help | Smart Previews Lightroom 5 web page and still haven't been able to figure what I'm doing wrong. Any help would be appreciated.

Your internal HDD. by default, is named 'Macintosh HD'. From what information you supplied, it looks like there is already a Lightroom catalog installed on you local (internal) HDD using the standard naming convention Adobe uses as well as a Lightroom catalog on your external drive which you created. To be sure of which catalog Lightroom is loading when it starts up, To do this, start Lightroom as you normally would. After it starts, select the Lightroom menu item, then select the Catalog Preferences item and finally, navigate to the General tab. The Location information will tell you exactly what catalog Lightroom is opening by default. This will likely be the Photography Mac Book Pro Versions catalog on your external HDD. Once that is confirmed, you are ready to proceed. As an additional test/verification, you can shut down Lightroom and, this time, start Lightroom while holding down the ALT/OPTION key. This will cause Lightroom to pause and display a screen which will allow you to chose a different catalog to open. Navigate to the /Users/[user name]/Pictures/Lightroom folder and select the Lightroom 5 Catalog.lrcat file. When Lightroom comes up, there should be no previews or folders as this catalog should be empty. Now you can be certain which catalog is being used and which catalog has all your data and you are ready to migrate your current catalog. Shut down Lightroom.
To migrate your current catalog, use Finder to locate your Photography Mac Book Pro Versions folder on your external drive. Select the folder and select COPY from the context menu. Next, use Finder to navigate to the /Users/[user name]/Pictures/Lightroom folder on you internal HDD. You can start at the Macintosh HD level and work your way down by opening each level (Macintosh HD/Users/[user name]/Pictures). Select the /Pictures folder and then select PASTE... from the context menu. When the COPY/PASTE is complete, you should see the following files on the Macintosh HD:
Macintosh HD/Users/[user name]/Pictures/Lightroom/ and
Macintosh HD/Users/[user name]/Pictures/Photography Mac Book Pro Versions
The Macintosh HD/Users/[user name]/Pictures/Lightroom folder will contain the empty default catalog the Adobe created when Lightroom was installed and Macintosh HD/Users/[user name]/Pictures/Photography Mac Book Pro Versions will contain a copy of the catalog you created on your external HDD.
You are almost done now. Make sure your external drive is still attached for this step. Restart Lightroom using the ALT/OPTION key again. When the Select Catalog screen appears, select the Choose a Different Catalog button (lower left side). When you do, a Finder window will open to allow you to navigate to a catalog of your choosing. Navigate to Macintosh HD/Users/[user name]/Pictures/Photography Mac Book Pro Versions and select the file Photography Mac Book Pro Version.lrcat. This is the copy you just created. Select the Open button and Lightroom should start. You should see all of your previews and settings just as before. Also, in the left hand panel, all of your folder should show up and none of them should be dimmed and none of your previews should display a small exclamation point badge. Either a dimmed folder name or an exclamation point badge indicates that Lightroom can't find the associated image file. If everything looks good, go to the Lightroom menu, select Preferences and then select the General tab. Under Default Catalog, select an option to either load the LAST catalog opened or select the Users/[user name]/Pictures/Photography Mac Book Pro Versions catalog from the drop down. Shut down Lightroom and then restart it normally. This time, when Lightroom starts, you should be viewing the new copy of your catalog. You can confirm this by looking at the General tab on the Catalog Preferences screen (Lightroom/Catalog Preferences menu items). Shut down Lightroom once again and this time, eject your external drive before restarting. This time, your folders in the left hand panel will be dimmed but you should be able to work with your smart previews. If Lightroom should display a Select Catalog screen with the external drive detached, double check your settings as it indicates Lightroom is still looking at the copy of the catalog on the external drive rather than the new copy you made.
Finally, if you are seeing dimmed folders and/or exclamation point badges with the external drive attached, this indicates a problem. You can select any folder and select Update Folder Location from the context menu. This will allow you to navigate to the copy on the external drive and select it. Lightroom will then update the catalog (select to synchronize the content). This will not only clear the dimmed folder problem but also remove the exclamation point badges for all photos in that missing folder. However, it may indicate that not all went well with the copy of the catalog so make sure to verify all went well. You can use the Get Info option on the two folders. You should see the same number of files/folders for both the copy on the internal drive as well as on the external drive but you can't rely on the byte count because of the possibility of differences between the geometry of the two drives. Hope this all helps!

How to insert a image file into oracle database

hi all
can anyone guide me how to insert a image file into oracle database now
i have created table using
create table imagestore(image blob);
but when inserting i totally lost don't know what to do how to write query to insert image file

Hi I don't have time to explain really, I did have to do this a while ago though so I will post a code snippet. This is using the commons file upload framework.
Firstly you need a multi part form data (if you are using a web page). If you are not using a web page ignore this bit.
out.println("<form name=\"imgFrm\" method=\"post\" enctype=\"multipart/form-data\" action=\"FileUploadServlet?thisPageAction=reloaded\" onSubmit=\"return submitForm();\"><input type=\"FILE\" name=\"imgSource\" size='60' class='smalltext' onKeyPress='return stopUserInput();' onKeyUp='stopUserInput();' onKeyDown='stopUserInput();' onMouseDown='noMouseDown(event);'>");
out.println("   <input type='submit' name='submit' value='Submit' class='smalltext'>");
out.println("</form>"); Import this once you have the jar file:
import org.apache.commons.fileupload.*;Now a method I wrote to upload the file. I am not saying that this is correct, or its the best way to do this. I am just saying it works for me.
private boolean uploadFile(HttpServletRequest request, HttpSession session) throws Exception {
        boolean result = true;
        String fileName = null;
        byte fileData[] = null;
        String fileUploadError = null;
        String imageType = "";
        String error = "";
        DiskFileUpload fb = new DiskFileUpload();
        List fileItems = fb.parseRequest(request);
        Iterator it = fileItems.iterator();
        while(it.hasNext()){
            FileItem fileItem = (FileItem)it.next();
            if (!fileItem.isFormField()) {
                fileName = fileItem.getName();
                fileData = fileItem.get();
                // Get the imageType from the filename extension
                if (fileName != null) {
                    int dotPos = fileName.indexOf('.');
                    if (dotPos >= 0 && dotPos != fileName.length()-1) {
                        imageType = fileName.substring(dotPos+1).toLowerCase();
                        if (imageType.equals("jpg")) {
                            imageType = "jpeg";
        String filePath = request.getParameter("FILE_PATH");
        session.setAttribute("filePath", filePath);
        session.setAttribute("fileData", fileData);
        session.setAttribute("fileName", fileName);
        session.setAttribute("imageType", imageType);
        return result;
     } And now finally the method to actually write the file to the database:
private int writeImageFile(byte[] fileData, String fileName, String imageType, String mode, Integer signatureIDIn, HttpServletRequest request) throws Exception {
        //If the previous code found a file that can be uploaded then
        //save it into the database via a pstmt
        String sql = "";
        UtilDBquery udbq = getUser(request).connectToDatabase();
        Connection con = null;
        int signatureID = 0;
        PreparedStatement pstmt = null;
        try {
            udbq.setUsePreparedStatements(true);
            con = udbq.getPooledConnection();
            con.setAutoCommit(false);
            if((!mode.equals("U")) || (mode.equals("U") && signatureIDIn == 0)) {
                sql = "SELECT SEQ_SIGNATURE_ID.nextval FROM DUAL";
                pstmt = con.prepareStatement(sql);
                ResultSet rs = pstmt.executeQuery();
                while(rs.next()) {
                   signatureID = rs.getInt(1);
                if (fileName != null && imageType != null) {
                    sql = "INSERT INTO T_SIGNATURE (SIGNATURE_ID, SIGNATURE) values (?,?)";
                    InputStream is2 = new ByteArrayInputStream(fileData);
                    pstmt = con.prepareStatement(sql);
                    pstmt.setInt(1, signatureID);
                    pstmt.setBinaryStream(2, is2, (int)(fileData.length));
                    pstmt.executeUpdate();
                    pstmt.close();
                    con.commit();
                    con = null;
            if(mode.equals("U") && signatureIDIn != 0) {
                signatureID = signatureIDIn.intValue();
                if (fileName != null && imageType != null) {
                    sql = "UPDATE T_SIGNATURE SET SIGNATURE = ? WHERE SIGNATURE_ID = ?";
                    InputStream is2 = new ByteArrayInputStream(fileData);
                    pstmt = con.prepareStatement(sql);
                    pstmt.setBinaryStream(1, is2, (int)(fileData.length));
                    pstmt.setInt(2, signatureID);
                    pstmt.executeUpdate();
                    pstmt.close();
                    con.commit();
                    con = null;
        } catch (Exception e) {
            con = null;
            throw new Exception(e.toString());
        return signatureID;
   }

How can add a images file to anothere image file

hi
Requirement is: i have one image in data base , i is show to user in my application
know we want add another image file in to a current image file (just append)
at end .
i was tried with following code below
i was read the previous(Old) image content from the data base and placed into c:\\ReArchive\\test_content.tiff
ResultSet rs2=dbBean.getSQLRows("select binarycontent from ContentVersion where contentindex="+IndexValue+"");
byte[] bTempData_content=new byte[65536];
while(rs2.next()){
File f = new File("c:\\ReArchive\\test_content.tiff");
f_content.delete();
f_content.createNewFile();
FileOutputStream dest_contentVersion = new FileOutputStream(f_content);
while(rs2.next()){
InputStream is_content=rs2.getBinaryStream("Binarycontent");
nActualRead_content=is.read(bTempData_content,0,65536);
while(nActualRead_content>0)
dest_contentVersion.write(bTempData_content,0,nActualRead_content);
nActualRead_content=is.read(bTempData_content,0,65536);
Then i was took New image file from data base and place in to c:\\ReArchive\\test.tiff");
int nActualRead=0;
ResultSet rs1=dbBean.getSQLRows("select * from Object_Store where Barcode_ID='"+strBar_Code+"'");
byte[] bTempData=new byte[65536];
File f = new File("c:\\ReArchive\\test.tiff");
f.delete();
f.createNewFile();
FileOutputStream dest = new FileOutputStream(f);
while(rs1.next()){
InputStream is=rs1.getBinaryStream("Obj_Content");
nActualRead=is.read(bTempData,0,65536);
while(nActualRead>0)
dest.write(bTempData,0,nActualRead);
nActualRead=is.read(bTempData,0,65536);
then i tried add two images by converting InputStream to String and i am trying add to images
but i was failed ,i think i am in not correct way , how can i solve this problem
thanks advance
gss

Don't you think it would be a good idea to tell us how you failed?

How to add an image file to Oracle db?

Need help urgently....Anybody knows how to add an image file (example: jpg)into one of the fields in Oracle database??

This will do the job..
package forum;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import java.sql.*;
import oracle.jdbc.driver.*;
//import oracle.sql.*;
Wanneer een request.getInputStream wordt geconferteerd naar een "String" (zie later) dan ziet de output in tekstformaat er als volgt uit:
-----------------------------7d280152604f4 Content-Disposition: form-data; name="oploadfile"; filename="C:\WINNT\Profiles\mvo\Desktop\boodschap.txt" Content-Type: text/plain Deze boodschap dient te worden ge-insert in de database. -----------------------------7d280152604f4 Content-Disposition: form-data; name="StadID" 1234 -----------------------------7d280152604f4 Content-Disposition: form-data; name="SuccessPage" /forum/error.jsp -----------------------------7d280152604f4--
of opgesplitst
contentType........... multipart/form-data; boundary=---------------------------7d235ade00f0
filename.............. "C:\Documents and Settings\Administrator\Desktop\boodschap.txt"
MIME type............. text/plain
Wat in database moet.. Dit is de eigenlijke boodschap die moet worden ge-insert in de database.
Eind boundary......... -----------------------------7d235ade00f0 Content-Disposition: form-data; name="file1"; filename="" Content-Type: application/octet-stream -----------------------------7d235ade00f0--
We gaan achtereenvolgens:
1. Kijken of het van het "multipart/form-data" type is (uploaden) en strippen van eerste boundery.
1.a Geen "multipart/form-data" ? dan... error message
1.b Groter dan MAX_SIZE ?..dan .. error message
2. Filenaam van de te uploaden file uitlezen
3. Mimetype bepalen en bepalen in welke positie van de string het Mimetype ophoudt, cq waar te uploaden file begint
4. Bepalen waar eind boundery begint
5. De eigenlijke file uitlezen
6. Terug converteren naar bytes
public class WriteBlob extends HttpServlet {
public static final int MAX_SIZE = ParameterSettings.imageUpload;
String successMessage = "";
public void init(ServletConfig config) throws ServletException {
super.init(config);
* Process the HTTP Get request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
DataInputStream in = null;
FileOutputStream fileOut= null;
PrintWriter out = response.getWriter();
int kb_size = 0;
boolean pass2 = true;
String message = "";
String responseRedirect = "/forum/uploaden.jsp?message="+" Uploaden geslaagd";
try
//get content type of client request
String contentType = request.getContentType();
// Start stap 1...content type is multipart/form-data
if(contentType != null && contentType.indexOf("multipart/form-data") != -1)
//open input stream
in = new DataInputStream(request.getInputStream());
//get length of content data
int formDataLength = request.getContentLength(); // totale lengte van de inputstream
//initieer een byte array om content data op te slaan
byte dataBytes[] = new byte[formDataLength];
//read file into byte array
int bytesRead = 0;
int totalBytesRead = 0;
int sizeCheck = 0;
while (totalBytesRead < formDataLength)
//kijken of de file niet te groot is
sizeCheck = totalBytesRead + in.available();
if (sizeCheck > MAX_SIZE)
pass2 = false;
message = "Sorry. U kunt slechts bestanden uploaden tot een grootte van 500KB";
responseRedirect = "/forum/uploaden.jsp?message="+message;
bytesRead = in.read(dataBytes, totalBytesRead,formDataLength);
totalBytesRead += bytesRead;
if (pass2==true)
kb_size = (int)(formDataLength/1024);
//create string from byte array for easy manipulation
String file = new String(dataBytes);
/*get boundary value (boundary is a unique string that separates content data)
contentType........... multipart/form-data; boundary=---------------------------7d235ade00f0
int lastIndex = contentType.lastIndexOf("=");
String boundary = contentType.substring(lastIndex+1, contentType.length());
// Stap 2.....bepaal de naam van de upload file
// filename.............. "C:\Documents and Settings\Administrator\Desktop\boodschap.txt"
String saveFile = file.substring(file.indexOf("filename=\"")+10);
saveFile = saveFile.substring(0,saveFile.indexOf("\n"));
saveFile = saveFile.substring(saveFile.lastIndexOf("\\")+1,saveFile.indexOf("\"")); //naam van de file...boodschap.txt
String saveFileName = saveFile;
// Stap 3..Bepaal MIME Type en de positie van eind mime type in string
voorbeeld: -----------------------------7d23d21220524 Content-Disposition: form-data; name="file0"; filename="C:\WINNT\Profiles\mvo\Desktop\z clob.txt" Content-Type: text/plain
String restant = "";
int pos; //position in upload file
// bijv .. filename="C:\Documents and Settings\Administrator\Desktop\boodschap.txt"
pos = file.indexOf("filename=\"");
//find position of content-disposition line
pos = file.indexOf("\n",pos)+1; // eing file naam + spatie
// onderstaand geeft bijv Content-Type: text/plain
restant = file.substring(pos,file.indexOf("\n",pos)-1);
restant = restant.substring(restant.indexOf(":")+2,restant.length()); // MIME type
String mimeType = restant;
//find position of eind content-type line
pos = file.indexOf("\n",pos)+1;
//find position of blank line
pos = file.indexOf("\n",pos)+1;
int start = pos;
// Stap 4 eind boundary
/*find the location of the next boundary marker (marking the end of the upload file data)*/
int boundaryLocation = file.indexOf(boundary,pos)-4; //waarom -4 ..? ziet er uit als linebreak spatie--boundary=-----------------------------7d21c9ae00f0
// Stap 5 en 6..de eigelijke te uploaden file in nieuwe byte file inserten
byte dataBytes2[] = new byte[boundaryLocation-start]; //declareren
for (int i=0;i<(boundaryLocation-start);i++) // inserten BELANGRIJK !!
dataBytes2=dataBytes[start+i];
String next_id = "0";
Statement statement = null;
Connection conn = null;
boolean pass = true;
ResultSet rs = null;
Statement stmt_empty = null;
oracle.sql.BLOB blb = null;
try
int vendor = DriverUtilities.ORACLE;
String username = ConnectionParams.userName;
String password = ConnectionParams.passWord;
String connStr = DriverUtilities.makeURL(vendor);
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
conn = DriverManager.getConnection(connStr,username, password);
if (conn==null){pass=false;}
} catch (Exception e){out.println("<P>" + "There was an error establishing a connection:");}
if (pass==true)
try
String seq_nextval ="select forum_blob_seq.nextval from dual";
statement = conn.createStatement();
ResultSet rset = statement.executeQuery(seq_nextval);
while (rset.next())
next_id = rset.getString(1);
if (next_id.equals("0"))
message = "Uploaden mislukt !...Er ging wat fout tijdens de interactie met de database";
responseRedirect = "/forum/uploaden.jsp?message="+message;
pass = false;
} catch (Exception e1) { out.println("Error blob1 : "+e1.toString()); };
} // end pass
if (pass==true)
try
Statement stmt2 = conn.createStatement();
String insert_empty_blob = "INSERT INTO test_blob(id "+
",filename "+
",mimetype "+
",kb) "+
"VALUES("+Integer.parseInt(next_id) +
",'"+saveFileName+"'"+
",'"+mimeType+"'"+
","+kb_size+")";
stmt2.executeQuery(insert_empty_blob);
conn.commit();
if (stmt2!= null) {stmt2.close();}else{stmt2.close();pass = false;}
} catch (Exception e2){
message = "Uploaden mislukt !...Er ging wat fout tijdens de interactie met de database";
responseRedirect = "/forum/uploaden.jsp?message="+message;
out.println("<P>" + "2. There was an error inserting mime type:");}
} //end pass
if (pass==true)
try
conn.setAutoCommit(false);
} catch (Exception e3) { pass = false; out.println("Error blob 3: "+e3.toString()); };
} //end pass
if (pass==true)
try
String Query_blob ="Select test_blob FROM test_blob where id="+next_id+" FOR UPDATE";
stmt_empty = conn.createStatement();
rs=stmt_empty.executeQuery(Query_blob);
} catch (Exception e4) {
pass = false;
out.println("Error blob 4: "+e4.toString());
message = "Uploaden mislukt !...Er ging wat fout tijdens de interactie met de database";
responseRedirect = "/forum/uploaden.jsp?message="+message;};
} //end pass
if (pass==true)
try
                         if (rs.next())
                         blb = ((OracleResultSet)rs).getBLOB(1);
                    OutputStream stmBlobStream = blb.getBinaryOutputStream();
                         try {
                              int iSize = blb.getBufferSize();
                         byte[] byBuffer = new byte[iSize];
                         int iLength = -1;
ByteArrayInputStream stmByteIn = new ByteArrayInputStream(dataBytes2);
                              try {
// while ( (iLength = in.read(byBuffer, 0,      iSize)) != -1 )
while ( (iLength = stmByteIn.read(byBuffer, 0,      iSize)) != -1 )
                                   stmBlobStream.write(byBuffer, 0, iLength);
                                   stmBlobStream.flush();
                                   } // end while
} catch (Exception e5) {
pass=false;
out.println("Error blob 5: "+e5.toString());
message = "Uploaden mislukt !...Er ging wat fout tijdens de interactie met de database";
responseRedirect = "/forum/uploaden.jsp?message="+message; }
                              finally { conn.commit();     }
} catch (Exception e6) { out.println("Error blob 6: "+e6.toString()); };
                         } //end if rs.next()
                         else {      throw new SQLException("Could not locate message record in database."); }
} catch (Exception e7) { out.println("Error blob : "+e7.toString()); };
} // end pass
} // end pass2
else //request is not multipart/form-data
message = "Uploaden mislukt !...Gegevens niet verstuurd via multipart/form-data.";
responseRedirect = "/forum/error.jsp?message="+message;
out.println("Request not multipart/form-data.");
catch(Exception e)
try
//print error message to standard out
out.println("Error in doPost: " + e);
//send error message to client
out.println("An unexpected error has occurred.");
out.println("Error description: " + e);
}catch (Exception f) {}
response.sendRedirect(responseRedirect);
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
Regards
Martin

How can I copy and paste images' file?

I need to duplicate images' files (.jpeg or .gif) from a directory to another one.
How can I do?
Is there any method to do that?(with jdk1.3.1)
Thanks for your help.

The following class copies files. Just call "java FileCopier file1 file2". FileInputStream and FileOutputStream also accept File instances instead of Strings, which will help when you work with different directories.
// file: FileCopier.java
import java.io.*;
public class FileCopier {
private String fileIn, fileOut;
private int buffersize = 32768;
public FileCopier(String fileIn, String fileOut) {
    this.fileIn = fileIn;
    this.fileOut = fileOut;
public void copy() throws IOException {
    FileInputStream reader = new FileInputStream(fileIn);
    FileOutputStream writer = new FileOutputStream(fileOut);
    byte[] buffer = new byte[buffersize];
    int read;
    while( (read = reader.read(buffer, 0, buffersize)) > 0 ) {
      writer.write(buffer, 0, read);
    writer.flush();
public static void main(String args[]) throws IOException {
    FileCopier copier = new FileCopier(args[0], args[1]);
    copier.copy();
}

How do i save my drawing as an image file?

hiee
I have made a drawing panel on an Internal frame.
I can draw basic 2D shapes on it.
Now , i wanted to save this as an image file (ie.gif or jpeg).
How do i do that??

* SaveAsGif_Demo.java
* Created on 13 mars 2005, 11:26
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.NoSuchElementException;
import javax.swing.*;
* @author Andr� Uhres
public class SaveAsGif_Demo extends javax.swing.JFrame {
    /** Creates new form SaveAsGif_Demo */
    public SaveAsGif_Demo() {
        initComponents();
        myPanel = new MyPanel();
        getContentPane().add(myPanel, BorderLayout.CENTER);
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
    private void initComponents() {
        jToolBar1 = new javax.swing.JToolBar();
        jButton1 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Save as .gif Demo");
        jToolBar1.setFloatable(false);
        jButton1.setText("Save");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
        jToolBar1.add(jButton1);
        jToolBar1.add(jLabel1);
        getContentPane().add(jToolBar1, java.awt.BorderLayout.NORTH);
        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-400)/2, (screenSize.height-300)/2, 400, 300);
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
        File file = new File("c:\\test.gif");
        if(SaveAsPic.saveGif(file, myPanel.captureJPanel(myPanel))){
            jLabel1.setText("The diagram was saved as " + file.getAbsolutePath());
            return;
        jLabel1.setText("Error:failed to save as gif");
     * @param args the command line arguments
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new SaveAsGif_Demo().setVisible(true);
    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JToolBar jToolBar1;
    // End of variables declaration
    private MyPanel myPanel;
class MyPanel extends JPanel {
    MyPanel(){
        super();
    public void paint(Graphics g){
        g.drawRect(10, 10, 100,100);
    Image i ;
    public Image captureJPanel( JPanel jp ) {
        i = this.createImage( jp.getSize().height, jp.getSize().width );
        Graphics g = i.getGraphics();
        jp.paint( g );
        return i;
class SaveAsPic {
    public static boolean saveGif(File file, Image image) {
        boolean flag = true;
        try {
            FileOutputStream fileoutputstream = new FileOutputStream(file);
            GifEncoder gifencoder = new GifEncoder(image, fileoutputstream);
            gifencoder.encode();
            fileoutputstream.close();
        catch(IOException ioexception) {
            System.out.println("Error encoding Gif-file: " + ioexception.getMessage());
            flag = false;
        return flag;
    SaveAsPic() {
class IntHashtableEnumerator
    implements Enumeration {
    IntHashtableEnumerator(IntHashtableEntry ainthashtableentry[], boolean flag) {
        table = ainthashtableentry;
        keys = flag;
        index = ainthashtableentry.length;
    public boolean hasMoreElements() {
        if(entry != null)
            return true;
        while(index-- > 0)
            if((entry = table[index]) != null)
                return true;
        return false;
    public Object nextElement() {
        if(entry == null)
            while(index-- > 0 && (entry = table[index]) == null) ;
        if(entry != null) {
            IntHashtableEntry inthashtableentry = entry;
            entry = inthashtableentry.next;
            if(keys)
                return new Integer(inthashtableentry.key);
            else
                return inthashtableentry.value;
        } else {
            throw new NoSuchElementException("IntHashtableEnumerator");
    boolean keys;
    int index;
    IntHashtableEntry table[];
    IntHashtableEntry entry;
class IntHashtableEntry {
    protected Object clone() {
        IntHashtableEntry inthashtableentry = new IntHashtableEntry();
        inthashtableentry.hash = hash;
        inthashtableentry.key = key;
        inthashtableentry.value = value;
        inthashtableentry.next = next == null ? null : (IntHashtableEntry)next.clone();
        return inthashtableentry;
    IntHashtableEntry() {
    int hash;
    int key;
    Object value;
    IntHashtableEntry next;
class IntHashtable extends Dictionary
    implements Cloneable {
    public IntHashtable(int i, float f) {
        if(i <= 0 || (double)f <= 0.0D) {
            throw new IllegalArgumentException();
        } else {
            loadFactor = f;
            table = new IntHashtableEntry;
threshold = (int)((float)i * f);
return;
public IntHashtable(int i) {
this(i, 0.75F);
public IntHashtable() {
this(101, 0.75F);
public int size() {
return count;
public boolean isEmpty() {
return count == 0;
public synchronized Enumeration keys() {
return new IntHashtableEnumerator(table, true);
public synchronized Enumeration elements() {
return new IntHashtableEnumerator(table, false);
public synchronized boolean contains(Object obj) {
if(obj == null)
throw new NullPointerException();
IntHashtableEntry ainthashtableentry[] = table;
for(int i = ainthashtableentry.length; i-- > 0;) {
for(IntHashtableEntry inthashtableentry = ainthashtableentry[i]; inthashtableentry != null; inthashtableentry = inthashtableentry.next)
if(inthashtableentry.value.equals(obj))
return true;
return false;
public synchronized boolean containsKey(int i) {
IntHashtableEntry ainthashtableentry[] = table;
int j = i;
int k = (j & 0x7fffffff) % ainthashtableentry.length;
for(IntHashtableEntry inthashtableentry = ainthashtableentry[k]; inthashtableentry != null; inthashtableentry = inthashtableentry.next)
if(inthashtableentry.hash == j && inthashtableentry.key == i)
return true;
return false;
public synchronized Object get(int i) {
IntHashtableEntry ainthashtableentry[] = table;
int j = i;
int k = (j & 0x7fffffff) % ainthashtableentry.length;
for(IntHashtableEntry inthashtableentry = ainthashtableentry[k]; inthashtableentry != null; inthashtableentry = inthashtableentry.next)
if(inthashtableentry.hash == j && inthashtableentry.key == i)
return inthashtableentry.value;
return null;
public Object get(Object obj) {
if(!(obj instanceof Integer)) {
throw new InternalError("key is not an Integer");
} else {
Integer integer = (Integer)obj;
int i = integer.intValue();
return get(i);
protected void rehash() {
int i = table.length;
IntHashtableEntry ainthashtableentry[] = table;
int j = i * 2 + 1;
IntHashtableEntry ainthashtableentry1[] = new IntHashtableEntry[j];
threshold = (int)((float)j * loadFactor);
table = ainthashtableentry1;
for(int k = i; k-- > 0;) {
for(IntHashtableEntry inthashtableentry = ainthashtableentry[k]; inthashtableentry != null;) {
IntHashtableEntry inthashtableentry1 = inthashtableentry;
inthashtableentry = inthashtableentry.next;
int l = (inthashtableentry1.hash & 0x7fffffff) % j;
inthashtableentry1.next = ainthashtableentry1[l];
ainthashtableentry1[l] = inthashtableentry1;
public synchronized Object put(int i, Object obj) {
if(obj == null)
throw new NullPointerException();
IntHashtableEntry ainthashtableentry[] = table;
int j = i;
int k = (j & 0x7fffffff) % ainthashtableentry.length;
for(IntHashtableEntry inthashtableentry = ainthashtableentry[k]; inthashtableentry != null; inthashtableentry = inthashtableentry.next)
if(inthashtableentry.hash == j && inthashtableentry.key == i) {
Object obj1 = inthashtableentry.value;
inthashtableentry.value = obj;
return obj1;
if(count >= threshold) {
rehash();
return put(i, obj);
} else {
IntHashtableEntry inthashtableentry1 = new IntHashtableEntry();
inthashtableentry1.hash = j;
inthashtableentry1.key = i;
inthashtableentry1.value = obj;
inthashtableentry1.next = ainthashtableentry[k];
ainthashtableentry[k] = inthashtableentry1;
count++;
return null;
public Object put(Object obj, Object obj1) {
if(!(obj instanceof Integer)) {
throw new InternalError("key is not an Integer");
} else {
Integer integer = (Integer)obj;
int i = integer.intValue();
return put(i, obj1);
public synchronized Object remove(int i) {
IntHashtableEntry ainthashtableentry[] = table;
int j = i;
int k = (j & 0x7fffffff) % ainthashtableentry.length;
IntHashtableEntry inthashtableentry = ainthashtableentry[k];
IntHashtableEntry inthashtableentry1 = null;
for(; inthashtableentry != null; inthashtableentry = inthashtableentry.next) {
if(inthashtableentry.hash == j && inthashtableentry.key == i) {
if(inthashtableentry1 != null)
inthashtableentry1.next = inthashtableentry.next;
else
ainthashtableentry[k] = inthashtableentry.next;
count--;
return inthashtableentry.value;
inthashtableentry1 = inthashtableentry;
return null;
public Object remove(Object obj) {
if(!(obj instanceof Integer)) {
throw new InternalError("key is not an Integer");
} else {
Integer integer = (Integer)obj;
int i = integer.intValue();
return remove(i);
public synchronized void clear() {
IntHashtableEntry ainthashtableentry[] = table;
for(int i = ainthashtableentry.length; --i >= 0;)
ainthashtableentry[i] = null;
count = 0;
public synchronized Object clone() {
try {
IntHashtable inthashtable = (IntHashtable)super.clone();
inthashtable.table = new IntHashtableEntry[table.length];
for(int i = table.length; i-- > 0;)
inthashtable.table[i] = table[i] == null ? null : (IntHashtableEntry)table[i].clone();
return inthashtable;
catch(CloneNotSupportedException _ex) {
throw new InternalError();
public synchronized String toString() {
int i = size() - 1;
StringBuffer stringbuffer = new StringBuffer();
Enumeration enumeration = keys();
Enumeration enumeration1 = elements();
stringbuffer.append("{");
for(int j = 0; j <= i; j++) {
String s = enumeration.nextElement().toString();
String s1 = enumeration1.nextElement().toString();
stringbuffer.append(s + "=" + s1);
if(j < i)
stringbuffer.append(", ");
stringbuffer.append("}");
return stringbuffer.toString();
private IntHashtableEntry table[];
private int count;
private int threshold;
private float loadFactor;
abstract class ImageEncoder
implements ImageConsumer {
public ImageEncoder(Image image, OutputStream outputstream) throws IOException {
this(image.getSource(), outputstream);
public ImageEncoder(ImageProducer imageproducer, OutputStream outputstream) throws IOException {
width = -1;
height = -1;
started = false;
accumulate = false;
producer = imageproducer;
out = outputstream;
abstract void encodeStart(int i, int j) throws IOException;
abstract void encodePixels(int i, int j, int k, int l, int ai[], int i1, int j1) throws IOException;
abstract void encodeDone() throws IOException;
public synchronized void encode() throws IOException {
encoding = true;
iox = null;
producer.startProduction(this);
while(encoding)
try {
wait();
catch(InterruptedException _ex) { }
if(iox != null)
throw iox;
else
return;
private void encodePixelsWrapper(int i, int j, int k, int l, int ai[], int i1, int j1) throws IOException {
if(!started) {
started = true;
encodeStart(width, height);
if((hintflags & 2) == 0) {
accumulate = true;
accumulator = new int[width * height];
if(accumulate) {
for(int k1 = 0; k1 < l; k1++)
System.arraycopy(ai, k1 * j1 + i1, accumulator, (j + k1) * width + i, k);
return;
} else {
encodePixels(i, j, k, l, ai, i1, j1);
return;
private void encodeFinish() throws IOException {
if(accumulate) {
encodePixels(0, 0, width, height, accumulator, 0, width);
accumulator = null;
accumulate = false;
private synchronized void stop() {
encoding = false;
notifyAll();
public void setDimensions(int i, int j) {
width = i;
height = j;
public void setProperties(Hashtable hashtable) {
props = hashtable;
public void setColorModel(ColorModel colormodel) {
public void setHints(int i) {
hintflags = i;
public void setPixels(int i, int j, int k, int l, ColorModel colormodel, byte abyte0[], int i1,
int j1) {
int ai[] = new int[k];
for(int k1 = 0; k1 < l; k1++) {
int l1 = i1 + k1 * j1;
for(int i2 = 0; i2 < k; i2++)
ai[i2] = colormodel.getRGB(abyte0[l1 + i2] & 0xff);
try {
encodePixelsWrapper(i, j + k1, k, 1, ai, 0, k);
catch(IOException ioexception) {
iox = ioexception;
stop();
return;
public void setPixels(int i, int j, int k, int l, ColorModel colormodel, int ai[], int i1,
int j1) {
if(colormodel == rgbModel) {
try {
encodePixelsWrapper(i, j, k, l, ai, i1, j1);
return;
catch(IOException ioexception) {
iox = ioexception;
stop();
return;
int ai1[] = new int[k];
for(int k1 = 0; k1 < l; k1++) {
int l1 = i1 + k1 * j1;
for(int i2 = 0; i2 < k; i2++)
ai1[i2] = colormodel.getRGB(ai[l1 + i2]);
try {
encodePixelsWrapper(i, j + k1, k, 1, ai1, 0, k);
catch(IOException ioexception1) {
iox = ioexception1;
stop();
return;
public void imageComplete(int i) {
producer.removeConsumer(this);
if(i == 4)
iox = new IOException("image aborted");
else
try {
encodeFinish();
encodeDone();
catch(IOException ioexception) {
iox = ioexception;
stop();
protected OutputStream out;
private ImageProducer producer;
private int width;
private int height;
private int hintflags;
private boolean started;
private boolean encoding;
private IOException iox;
private static final ColorModel rgbModel = ColorModel.getRGBdefault();
private Hashtable props;
private boolean accumulate;
private int accumulator[];
class GifEncoderHashitem {
public GifEncoderHashitem(int i, int j, int k, boolean flag) {
rgb = i;
count = j;
index = k;
isTransparent = flag;
public int rgb;
public int count;
public int index;
public boolean isTransparent;
class GifEncoder extends ImageEncoder {
public GifEncoder(Image image, OutputStream outputstream) throws IOException {
super(image, outputstream);
interlace = false;
maxbits = 12;
maxmaxcode = 4096;
htab = new int[5003];
codetab = new int[5003];
hsize = 5003;
clear_flg = false;
accum = new byte[256];
public GifEncoder(Image image, OutputStream outputstream, boolean flag) throws IOException {
super(image, outputstream);
interlace = false;
maxbits = 12;
maxmaxcode = 4096;
htab = new int[5003];
codetab = new int[5003];
hsize = 5003;
clear_flg = false;
accum = new byte[256];
interlace = flag;
public GifEncoder(ImageProducer imageproducer, OutputStream outputstream) throws IOException {
super(imageproducer, outputstream);
interlace = false;
maxbits = 12;
maxmaxcode = 4096;
htab = new int[5003];
codetab = new int[5003];
hsize = 5003;
clear_flg = false;
accum = new byte[256];
public GifEncoder(ImageProducer imageproducer, OutputStream outputstream, boolean flag) throws IOException {
super(imageproducer, outputstream);
interlace = false;
maxbits = 12;
maxmaxcode = 4096;
htab = new int[5003];
codetab = new int[5003];
hsize = 5003;
clear_flg = false;
accum = new byte[256];
interlace = flag;
void encodeStart(int i, int j) throws IOException {
width = i;
height = j;
rgbPixels = new int[j][i];
void encodePixels(int i, int j, int k, int l, int ai[], int i1, int j1) throws IOException {
for(int k1 = 0; k1 < l; k1++)
System.arraycopy(ai, k1 * j1 + i1, rgbPixels[j + k1], i, k);
void encodeDone() throws IOException {
int i = -1;
int j = -1;
colorHash = new IntHashtable();
int k = 0;
for(int l = 0; l < height; l++) {
for(int i1 = 0; i1 < width; i1++) {
int j1 = rgbPixels[l][i1];
boolean flag = j1 >>> 24 < 128;
if(flag)
if(i < 0) {
i = k;
j = j1;
} else
if(j1 != j)
rgbPixels[l][i1] = j1 = j;
GifEncoderHashitem gifencoderhashitem = (GifEncoderHashitem)colorHash.get(j1);
if(gifencoderhashitem == null) {
if(k >= 256)
throw new IOException("too many colors for a GIF");
gifencoderhashitem = new GifEncoderHashitem(j1, 1, k, flag);
k++;
colorHash.put(j1, gifencoderhashitem);
} else {
gifencoderhashitem.count++;
byte byte0;
if(k <= 2)
byte0 = 1;
else
if(k <= 4)
byte0 = 2;
else
if(k <= 16)
byte0 = 4;
else
byte0 = 8;
int k1 = 1 << byte0;
byte abyte0[] = new byte[k1];
byte abyte1[] = new byte[k1];
byte abyte2[] = new byte[k1];
for(Enumeration enumeration = colorHash.elements(); enumeration.hasMoreElements();) {
GifEncoderHashitem gifencoderhashitem1 = (GifEncoderHashitem)enumeration.nextElement();
abyte0[gifencoderhashitem1.index] = (byte)(gifencoderhashitem1.rgb >> 16 & 0xff);
abyte1[gifencoderhashitem1.index] = (byte)(gifencoderhashitem1.rgb >> 8 & 0xff);
abyte2[gifencoderhashitem1.index] = (byte)(gifencoderhashitem1.rgb & 0xff);
GIFEncode(super.out, width, height, interlace, (byte)0, i, byte0, abyte0, abyte1, abyte2);
byte GetPixel(int i, int j) throws IOException {
GifEncoderHashitem gifencoderhashitem = (GifEncoderHashitem)colorHash.get(rgbPixels[j][i]);
if(gifencoderhashitem == null)
throw new IOException("color not found");
else
return (byte)gifencoderhashitem.index;
static void writeString(OutputStream outputstream, String s) throws IOException {
byte abyte0[] = s.getBytes();
outputstream.write(abyte0);
void GIFEncode(OutputStream outputstream, int i, int j, boolean flag, byte byte0, int k, int l,
byte abyte0[], byte abyte1[], byte abyte2[]) throws IOException {
Width = i;
Height = j;
Interlace = flag;
int k1 = 1 << l;
int j1;
int i1 = j1 = 0;
CountDown = i * j;
Pass = 0;
int l1;
if(l <= 1)
l1 = 2;
else
l1 = l;
curx = 0;
cury = 0;
writeString(outputstream, "GIF89a");
Putword(i, outputstream);
Putword(j, outputstream);
char c = '\uFF80';
c |= 'p';
c |= (byte)(l - 1);
Putbyte((byte)c, outputstream);
Putbyte(byte0, outputstream);
Putbyte((byte)0, outputstream);
for(int i2 = 0; i2 < k1; i2++) {
Putbyte(abyte0[i2], outputstream);
Putbyte(abyte1[i2], outputstream);
Putbyte(abyte2[i2], outputstream);
if(k != -1) {
Putbyte((byte)33, outputstream);
Putbyte((byte)-7, outputstream);
Putbyte((byte)4, outputstream);
Putbyte((byte)1, outputstream);
Putbyte((byte)0, outputstream);
Putbyte((byte)0, outputstream);
Putbyte((byte)k, outputstream);
Putbyte((byte)0, outputstream);
Putbyte((byte)44, outputstream);
Putword(i1, outputstream);
Putword(j1, outputstream);
Putword(i, outputstream);
Putword(j, outputstream);
if(flag)
Putbyte((byte)64, outputstream);
else
Putbyte((byte)0, outputstream);
Putbyte((byte)l1, outputstream);
compress(l1 + 1, outputstream);
Putbyte((byte)0, outputstream);
Putbyte((byte)59, outputstream);
void BumpPixel() {
curx++;
if(curx == Width) {
curx = 0;
if(!Interlace) {
cury++;
return;
switch(Pass) {
default:
break;
case 0: // '\0'
cury += 8;
if(cury >= Height) {
Pass++;
cury = 4;
return;
break;
case 1: // '\001'
cury += 8;
if(cury >= Height) {
Pass++;
cury = 2;
return;
break;
case 2: // '\002'
cury += 4;
if(cury >= Height) {
Pass++;
cury = 1;
return;
break;
case 3: // '\003'
cury += 2;
return;
int GIFNextPixel() throws IOException {
if(CountDown == 0) {
return -1;
} else {
CountDown--;
byte byte0 = GetPixel(curx, cury);
BumpPixel();
return byte0 & 0xff;
void Putword(int i, OutputStream outputstream) throws IOException {
Putbyte((byte)(i & 0xff), outputstream);
Putbyte((byte)(i >> 8 & 0xff), outputstream);
void Putbyte(byte byte0, OutputStream outputstream) throws IOException {
outputstream.write(byte0);
final int MAXCODE(int i) {
return (1 << i) - 1;
void compress(int i, OutputStream outputstream) throws IOException {
g_init_bits = i;
clear_flg = false;
n_bits = g_init_bits;
maxcode = MAXCODE(n_bits);
ClearCode = 1 << i - 1;
EOFCode = ClearCode + 1;
free_ent = ClearCode + 2;
char_init();
int j1 = GIFNextPixel();
int i2 = 0;
for(int j = hsize; j < 0x10000; j *= 2)
i2++;
i2 = 8 - i2;
int l1 = hsize;
cl_hash(l1);
output(ClearCode, outputstream);
int i1;
label0:
while((i1 = GIFNextPixel()) != -1) {
int k = (i1 << maxbits) + j1;
int l = i1 << i2 ^ j1;
if(htab[l] == k) {
j1 = codetab[l];
continue;
if(htab[l] >= 0) {
int k1 = l1 - l;
if(l == 0)
k1 = 1;
do {
if((l -= k1) < 0)
l += l1;
if(htab[l] == k) {
j1 = codetab[l];
continue label0;
} while(htab[l] >= 0);
output(j1, outputstream);
j1 = i1;
if(free_ent < maxmaxcode) {
codetab[l] = free_ent++;
htab[l] = k;
} else {
cl_block(outputstream);
output(j1, outputstream);
output(EOFCode, outputstream);
void output(int i, OutputStream outputstream) throws IOException {
cur_accum &= masks[cur_bits];
if(cur_bits > 0)
cur_accum |= i << cur_bits;
else
cur_accum = i;
for(cur_bits += n_bits; cur_bits >= 8; cur_bits -= 8) {
char_out((byte)(cur_accum & 0xff), outputstream);
cur_accum >>= 8;
if(free_ent > maxcode || clear_flg)
if(clear_flg) {
maxcode = MAXCODE(n_bits = g_init_bits);
clear_flg = false;
} else {
n_bits++;
if(n_bits == maxbits)
maxcode = maxmaxcode;
else
maxcode = MAXCODE(n_bits);
if(i == EOFCode) {
for(; cur_bits > 0; cur_bits -= 8) {
char_out((byte)(cur_accum & 0xff), outputstream);
cur_accum >>= 8;
flush_char(outputstream);
void cl_block(OutputStream outputstream) throws IOException {
cl_hash(hsize);
free_ent = ClearCode + 2;
clear_flg = true;
output(ClearCode, outputstream);
void cl_hash(int i) {
for(int j = 0; j < i; j++)
htab[j] = -1;
void char_init() {
a_count = 0;
void char_out(byte byte0, OutputStream outputstream) throws IOException {
accum[a_count++] = byte0;
if(a_count >= 254)
flush_char(outputstream);
void flush_char(OutputStream outputstream) throws IOException {
if(a_count > 0) {
outputstream.write(a_count);
outputstream.write(accum, 0, a_count);
a_count = 0;
private boolean interlace;
int width;
int height;
int rgbPixels[][];
IntHashtable colorHash;
int Width;
int Height;
boolean Interlace;
int curx;
int cury;
int CountDown;
int Pass;
static final int EOF = -1;
static final int BITS = 12;
static final int HSIZE = 5003;
int n_bits;
int maxbits;
int maxcode;
int maxmaxcode;
int htab[];
int codetab[];
int hsize;
int free_ent;
boolean clear_flg;
int g_init_bits;
int ClearCode;
int EOFCode;
int cur_accum;
int cur_bits;
int masks[] = {
0, 1, 3, 7, 15, 31, 63, 127, 255, 511,
1023, 2047, 4095, 8191, 16383, 32767, 65535
int a_count;
byte accum[];

How to read image file in bpel..

i want to pick up image files of format .jpg & .png in bpel..
Thanks...

Hi,
Ok, got your flow. I'd recommend start small and simple.
Receive
Assign
Invoke - Invoke File adapter using Synchronous Read Operation (Normal Read operation will not work in the middle of process) with Opaque schema and by specifying the exact file name.
I think you can't specify the file name as regular expression in Sync Read operation.
Also follow the below link for more details on how to achieve your requirement.
http://docs.oracle.com/cd/E23943_01/integration.1111/e10231/adptr_file.htm#BABGHDHG
Regards,
Neeraj Sehgal

How to save or save a drawing in a PNG or any Image file format ?

Hi,
I am working on a signature capturing application using J2ME MIDP 2.0 for Palm Treo 750 with Windows Mobile 6.0
I am taking signatures as a drawing on a CustomItem.
Now, i want to send it to a php script running on Apache server to save this signature as a PNG, jpeg or any image file at server end.
or how can i save this drawing on my local file system as a png or any other type of image file.
Plz help if anybody knows the right way....
Thanks.

Hi Hithayath,
Thnx for the reply.
Actually, i hv no problem in storing a data locally or sending it on a web server. The problem in related with the formats.
I mean, how can we create a png or jpg file using the raw bytes of an image drawn on a canvas or CustomItem.. ?
We can get the integer array of RGB points using getRGB() method of image object. Now, if i will write this data after converting to binary in a file then that file
will show a message like "Preview not available". It means the format is not recognized.
So, my question is how can we convert this raw data in a png or jpg format so it can be displayed on a web page or stored in a png or jpg file..?
I think now u can better understand the problem.
Waiting for the reply....
Thanks. :)

How to save a selected word image to image file in open XML in PNG format?

Hi Everyone,
I have a very strange problem. I want to extract the image from word using open xml sdk. Here the user selects the image on opened word, and then clicks on any button, so it should extract the same selected image to any predefined location in the PNG format.
I also tried to do the same thing using Word API, there I am copying the selection of image to clipboard and then getting the image and converting it to bitmap and saving it, but the image resolution is coming very bad. Is there any method through which
I can save the image to file either by Open XML sdk or Word API using C#.
Thanks,
Shahab Abbasi

Hi Shahab,
To extract images from word document, please take a look at this thread:
https://social.msdn.microsoft.com/Forums/office/en-US/e2a795ea-2ab7-401e-b6a8-0576220553f8/openxml-excel-how-to-extract-only-image-files?forum=oxmlsdk
string fileName = @"C:\test.docx";
using (WordprocessingDocument document = WordprocessingDocument.Open(fileName, true))
var e = document.MainDocumentPart.ImageParts.GetEnumerator();
int picNum = 0;
while (e.MoveNext())
picNum++;
ImagePart imagePart = e.Current;
Stream stream = imagePart.GetStream();
long length = stream.Length;
byte[] byteStream = new byte[length];
stream.Read(byteStream, 0, (int)length);
FileStream fstream = new FileStream(@"C:\abc.jpg", FileMode.OpenOrCreate);
fstream.Write(byteStream, 0, (int)length);
fstream.Close();
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How to delete a jar file after loading image files from it

Hi,
How can I delete a jar file after some image files have been loaded? For example, say, I have "a.jar" which contains an image "a.gif" in the root directory of the c drive. I would like to get the image size and then delete the jar file. Here is the code snippet:
    URL url = new URL("jar:file:/C:\\a.jar!/a.gif");
    Icon icon = new ImageIcon(url);
    System.out.println("icon size ? " + icon.getIconHeight());
    File file = new File("c:\\a.jar");
    while(file.exists())
        file.delete();
        try
            Thread.sleep(100);
        catch (InterruptedException ignored)
    System.out.println("file deleted.");I get the image size correctly but just can not delete the jar file. Apparently the file handle is not released, but how to close it? Any hint will be appreciated.
Justin Jan

I am sure the URLConnection.defaultUseCaches is set before it is connected otherwise I should catch an IllegalStateException on conn.setUseCaches(false).
        try
            URL url = new URL("jar:file:/C:\\a.jar!/a.gif");
         URLConnection conn = url.openConnection();
         conn.setDefaultUseCaches(false);
         conn.setUseCaches(false);
            Icon icon = new ImageIcon(url);
            System.out.println("icon size ? " + icon.getIconHeight());
            url.openConnection().getInputStream().close();
            System.gc();
         System.runFinalization();
            File file = new File("c:\\a.jar");
            while (file.exists())
                file.delete();
                try
                    Thread.sleep(10);
                catch (InterruptedException ignored)
            System.out.println("file deleted.");
        catch (Throwable t)
            t.printStackTrace();

Convention of image file byte assignation..how?

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