To forum visitors:
I am prepared to pay a standard shareware fee of US$20 to a user who can resolve this technical problem.
If your advice resolves the problem, I'll forward the payment to your postal address (include your
address with your reply, and also your email address)
I am attempting to enable a HTML button (using Javascript's onClick command) to directly input a number into one of the parameter text boxes in the Easy Filter Java applet (ie, enter a new color value number in the text field of the standard Colors Multiplicator Filter interface).
The applet is Freeware and can be downloaded at:
(It is a very effective bitmap display and editing utility)
To achieve this, I am trying to access the part of the applet that defines and sets the textbox. The text box is defined in the .class file by accessing the parameter details in the genericfilter.txt file (accompanies the .class files). I need to access 'private String appletInitialize()' and then one of the 'textFieldParameters' which sets the textbox.
I understand the basic syntax for referencing the applet:
document.appletname.setString("An example"). However, accessing the text fields in this applet is more complex!!
Please can you recommend the correct Javascript syntax to achieve communication with the applet.
Thank you for your kind assistance.
JM Graham
[email protected]
The Java source code for the applet: EasyFilter.class
# Easy Filter - E.B/JavaZOOM 1999 #
# Contact: [email protected] #
# #
/* Originally compiled from */
import java.awt.*;
import java.applet.Applet;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.image.MemoryImageSource;
import java.awt.image.PixelGrabber;
import java.util.Vector;
public synchronized class EasyFilter extends Applet implements KeyListener
private String paramFileName;
private Color bgColor;
private Color fgColor;
private Color parColor;
private Color sepColor;
private Color titleColor;
private Color helpColor;
private int WinWidth;
private int WinHeight;
private String title;
private String logoFileName;
private String originalImageFileName;
private String filteredCaption;
private String originalCaption;
private Vector paramsName;
private Vector paramsValue;
private Vector paramsComment;
private Panel panelParameters[];
private Label labelParameters[];
private TextField textFieldParameters[];
private Label labelComments[];
private int nbParameters;
private ScrollPane scrollPaneParams;
private Panel panelParams;
private Image theLogo;
private Image theOriginalImage;
private Image theFilteredImage;
private int theOriginalPixelArray[];
private int logoWidth;
private int logoHeight;
private int imageWidth;
private int imageHeight;
private drawCanvas canvasTitle;
private Panel panelTitle;
private Label labelTitle;
private Panel panelImages;
private Panel panelOriginalImage;
private drawCanvas canvasOriginalImage;
private Label labelOriginalImage;
private Panel panelFilteredImage;
private drawCanvas canvasFilteredImage;
private Label labelFilteredImage;
private Panel panelHelp;
private Label labelHelp;
private int Yspc;
private FilterImplementation theFilter;
public void init()
String string = null;
string = appletInitialize();
if (string != null)
Label label = new Label(new StringBuffer("Error: ").append(string).toString(), 1);
Panel panel = new Panel();
setLayout(new FlowLayout(1, 5, Yspc));
public void keyPressed(KeyEvent keyEvent)
boolean flag = true;
if (KeyEvent.getKeyText(keyEvent.getKeyCode()).equals("Enter"))
for (int i = 0; i < nbParameters; )
paramsValue.setElementAt(new Double(textFieldParameters.getText()), i);
catch (NumberFormatException e)
labelHelp.setText(labelParameters[i].getText() + ": Not a Number");
flag = false;
if (flag == 1)
labelHelp.setText(" .... Running, please wait .... ");
theFilteredImage = createImage(new MemoryImageSource(theFilter.getFinalImageWidth(), theFilter.getFinalImageHeight(), theFilter.getFinalImageBuffer(), 0, theFilter.getFinalImageWidth()));
canvasFilteredImage.setBounds(0, 0, theFilter.getFinalImageWidth(), theFilter.getFinalImageHeight());
labelHelp.setText("- Done -");
labelHelp.setText("- Press Enter to run the Filter -");
public void keyReleased(KeyEvent keyEvent)
public void keyTyped(KeyEvent keyEvent)
private String appletInitialize()
WinWidth = size().width;
WinHeight = size().height;
if (getParameter("bgcolor") == null)
bgColor = new Color(0, 0, 40);
bgColor = new Color(Integer.parseInt(getParameter("bgcolor"), 16));
if (getParameter("fgcolor") == null)
fgColor = new Color(255, 255, 255);
fgColor = new Color(Integer.parseInt(getParameter("fgcolor"), 16));
if (getParameter("sepcolor") == null)
sepColor = new Color(158, 128, 128);
sepColor = new Color(Integer.parseInt(getParameter("sepcolor"), 16));
if (getParameter("parcolor") == null)
parColor = new Color(24, 24, 24);
parColor = new Color(Integer.parseInt(getParameter("parcolor"), 16));
if (getParameter("titlecolor") == null)
titleColor = new Color(255, 255, 0);
titleColor = new Color(Integer.parseInt(getParameter("titlecolor"), 16));
if (getParameter("helpcolor") == null)
helpColor = new Color(0, 255, 255);
helpColor = new Color(Integer.parseInt(getParameter("helpcolor"), 16));
paramsName = new Vector();
paramsValue = new Vector();
paramsComment = new Vector();
paramFileName = getParameter("paramfile");
String string = readParams(paramFileName);
if (string != null)
return string;
MediaTracker mediaTracker = new MediaTracker(this);
theOriginalImage = getImage(getDocumentBase(), originalImageFileName);
mediaTracker.addImage(theOriginalImage, 0);
if (logoFileName != null)
theLogo = getImage(getDocumentBase(), logoFileName);
mediaTracker.addImage(theLogo, 1);
catch (InterruptedException e1)
return "Error while loading image";
if (mediaTracker.isErrorAny())
return "Error while loading image";
if (logoFileName != null)
logoWidth = theLogo.getWidth(this);
logoHeight = theLogo.getHeight(this);
imageWidth = theOriginalImage.getWidth(this);
imageHeight = theOriginalImage.getHeight(this);
theOriginalPixelArray = new int[imageWidth * imageHeight];
PixelGrabber pixelGrabber = new PixelGrabber(theOriginalImage, 0, 0, imageWidth, imageHeight, theOriginalPixelArray, 0, imageWidth);
panelTitle = new Panel();
canvasTitle = new drawCanvas();
labelTitle = new Label();
panelTitle.setLayout(new FlowLayout(1, 10, Yspc));
canvasTitle.setBounds(0, 0, logoWidth, logoHeight);
catch (InterruptedException e2)
return "Internal Error, Try RELOAD !";
if (title != null)
labelTitle.setFont(new Font("Dialog", 1, 14));
panelImages = new Panel();
panelOriginalImage = new Panel();
canvasOriginalImage = new drawCanvas();
labelOriginalImage = new Label();
panelFilteredImage = new Panel();
canvasFilteredImage = new drawCanvas();
labelFilteredImage = new Label();
panelImages.setLayout(new FlowLayout(1, 10, Yspc));
panelOriginalImage.setLayout(new BorderLayout(0, 2));
panelOriginalImage.add("Center", canvasOriginalImage);
canvasOriginalImage.setBounds(0, 0, imageWidth, imageHeight);
panelOriginalImage.add("South", labelOriginalImage);
labelOriginalImage.setFont(new Font("SansSerif", 0, 10));
panelFilteredImage.setLayout(new BorderLayout(0, 2));
panelFilteredImage.add("Center", canvasFilteredImage);
theFilter = new FilterImplementation(paramsValue, theOriginalPixelArray, imageWidth, imageHeight);
theFilteredImage = createImage(new MemoryImageSource(theFilter.getFinalImageWidth(), theFilter.getFinalImageHeight(), theFilter.getFinalImageBuffer(), 0, theFilter.getFinalImageWidth()));
canvasFilteredImage.setBounds(0, 0, theFilter.getFinalImageWidth(), theFilter.getFinalImageHeight());
panelFilteredImage.add("South", labelFilteredImage);
labelFilteredImage.setFont(new Font("SansSerif", 0, 10));
scrollPaneParams = new ScrollPane(0);
panelParams = new Panel();
nbParameters = paramsName.size();
int i = WinHeight - (33 + 7 * Yspc + logoHeight + imageHeight + 23);
if (i < Yspc + 2 + 24)
i = Yspc + 2 + 24;
scrollPaneParams.setBounds(0, 0, WinWidth - 10, i);
panelParams.setLayout(new GridLayout(nbParameters, 1, 5, Yspc / 2));
panelParameters = new Panel[nbParameters];
labelParameters = new Label[nbParameters];
textFieldParameters = new TextField[nbParameters];
labelComments = new Label[nbParameters];
for (int j = 0; j < nbParameters; j++)
panelParameters[j] = new Panel();
panelParameters[j].setLayout(new FlowLayout(0, 5, 1));
labelParameters[j] = new Label();
labelParameters[j].setFont(new Font("Dialog", 1, 12));
textFieldParameters[j] = new TextField(8);
labelComments[j] = new Label();
panelHelp = new Panel();
labelHelp = new Label();
panelHelp.setLayout(new FlowLayout(1, 5, 0));
labelHelp.setText(" Change colour values and press enter ");
return null;
private String readParams(String string1)
Object object1;
String string2;
if (string1 == null)
return "Filename of filter's parameters needed";
URL uRL = new URL(getDocumentBase(), string1);
URLConnection uRLConnection = uRL.openConnection();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(uRLConnection.getInputStream()));
string2 = null;
catch ()
return object1.getMessage();
catch ()
return object1.getMessage();
catch ()
return object1.getMessage();
if (bufferedReader != null)
Object object2;
for (object2 = bufferedReader.readLine(); object2 != null && string2 == null; object2 = bufferedReader.readLine())
string2 = extractFormat(object2);
catch ()
string2 = object2.getMessage();
if (string2 != null)
return string2;
return null;
private String extractFormat(String string1)
if (string1.length() == 0)
return null;
int i = 0;
int j = string1.indexOf(" ", i);
if (j == -1)
return "Bad format error (space missing)";
String string2 = string1.substring(i, j);
if (string2.equals("TITLE"))
i = j;
j = string1.indexOf(34, i);
if (j == -1)
return "Bad format (Double quote in TITLE missing)";
i = j + 1;
j = string1.indexOf(34, i);
if (j == -1)
return "Bad format (Double quote in TITLE missing)";
title = string1.substring(i, j);
return null;
if (string2.equals("ORIGINALCAPTION"))
i = j;
j = string1.indexOf(34, i);
if (j == -1)
return "Bad format (Double quote in ORIGINALCAPTION missing)";
i = j + 1;
j = string1.indexOf(34, i);
if (j == -1)
return "Bad format (Double quote in ORIGINALCAPTION missing)";
originalCaption = string1.substring(i, j);
return null;
if (string2.equals("FILTEREDCAPTION"))
i = j;
j = string1.indexOf(34, i);
if (j == -1)
return "Bad format (Double quote in FILTEREDCAPTION missing)";
i = j + 1;
j = string1.indexOf(34, i);
if (j == -1)
return "Bad format (Double quote in FILTEREDCAPTION missing)";
filteredCaption = string1.substring(i, j);
return null;
if (string2.equals("LOGO"))
i = j + 1;
j = string1.length();
logoFileName = string1.substring(i, j);
return null;
if (string2.equals("ORIGINALIMAGE"))
i = j + 1;
j = string1.length();
originalImageFileName = string1.substring(i, j);
return null;
if (!string2.equals("PARAM"))
return null;
i = j;
j = string1.indexOf(34, i);
if (j == -1)
return "Bad format in a PARAM line";
i = j + 1;
j = string1.indexOf(34, i);
if (j == -1)
return "Bad format in a PARAM line";
paramsName.addElement(string1.substring(i, j));
i = j + 2;
j = string1.indexOf(32, i);
if (j == -1)
return "Bad format in a PARAM line";
paramsValue.addElement(new Double(string1.substring(i, j)));
j = string1.indexOf(34, i);
catch (NumberFormatException e)
return "Bad format in a PARAM line";
if (j == -1)
return "Bad format (Double quote in PARAM comment missing)";
i = j + 1;
j = string1.indexOf(34, i);
if (j == -1)
return "Bad format (Double quote in PARAM comment missing)";
paramsComment.addElement(string1.substring(i, j));
return null;
public EasyFilter()
logoHeight = 33;
Yspc = 5;

Addition to my above submission
To clarify, I'll offer the US$20 to the FIRST person who offers me a workable solution to the problem, not to everyone!!!

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    ACTIVE TRACE LEVEL           1

    B Wed Aug 31 15:45:40 2011
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    B  Loading DB library 'D:\usr\sap\CUS\DVEBMGS04\exe\dboraslib.dll' ...
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    B  New connection 0 created
    M sysno      04
    M sid        CUS
    M systemid   560 (PC with Windows NT)
    M relno      7000
    M patchlevel 0
    M patchno    52
    M intno      20050900
    M make:      multithreaded, Unicode, optimized
    M pid        456
    M  kernel runs with dp version 210000(ext=109000) (@(#) DPLIB-INT-VERSION-210000-UC)
    M  length of sys_adm_ext is 572 bytes
    M  ***LOG Q0Q=> tskh_init, WPStart (Workproc 0 456) [dpxxdisp.c   1293]
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    M  DpSysAdmExtCreate: ABAP is active
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    M  DpShMCreate: sizeof(tm_adm)          3954072     (19672)
    M  DpShMCreate: sizeof(wp_ca_adm)          24000     (80)
    M  DpShMCreate: sizeof(appc_ca_adm)     8000     (80)
    M  DpCommTableSize: max/headSize/ftSize/tableSize=500/8/528056/528064
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    M  DpFileTableSize: max/headSize/ftSize/tableSize=0/0/0/0
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    M  DpShMCreate: sizeof(vmc_adm)          0     (1452)
    M  DpShMCreate: sizeof(wall_adm)          (38456/34360/64/184)
    M  DpShMCreate: sizeof(gw_adm)     48
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    M  DpShMCreate: allocated sys_adm at 05C00040
    M  DpShMCreate: allocated wp_adm at 05C01E28
    M  DpShMCreate: allocated tm_adm_list at 05C065A8
    M  DpShMCreate: allocated tm_adm at 05C065D8
    M  DpShMCreate: allocated wp_ca_adm at 05FCBB70
    M  DpShMCreate: allocated appc_ca_adm at 05FD1930
    M  DpShMCreate: allocated comm_adm at 05FD3870
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    M  DpShMCreate: allocated ca_info at 060547A0
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    B  dbexpbuf: Buffer EIBUF (addr: 0FBA00D0, size: 4194304, end: 0FFA00D0)
    B  dbexpbuf: Buffer ESM   (addr: 134E00D0, size: 4194304, end: 138E00D0)
    B  dbexpbuf: Buffer CUA   (addr: 138F00D0, size: 3072000, end: 13BDE0D0)
    B  dbexpbuf: Buffer OTR   (addr: 13BE00D0, size: 4194304, end: 13FE00D0)
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    M  icm/accept_remote_trace_level -> 0
    M  rdisp/no_hooks_for_sqlbreak -> 0
    M  CCMS: AlInitGlobals : alert/use_sema_lock = TRUE.

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    S  initialize debug system
    T  Stack direction is downwards.
    T  debug control: prepare exclude for printer trace
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    S  using table TSP02FX for frontend printing
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    S  size of open spool request entry: 2132 bytes
    S  immediate print option for implicitely closed spool requests is disabled

    A Wed Aug 31 15:46:18 2011

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    A  System page size: 4kb, total admin_size: 5132kb, dir_size: 5076kb.
    A  Attached to PXA (address 688A0040, size 150000K)
    A  abap/pxa = shared protect gen_remote
    A  -PXA--

    A Wed Aug 31 15:46:20 2011
    A  ABAP ShmAdm attached (addr=57A40000 leng=20955136 end=58E3C000)
    A  >> Shm MMADM area (addr=57EB5E58 leng=126176 end=57ED4B38)
    A  >> Shm MMDAT area (addr=57ED5000 leng=16150528 end=58E3C000)
    A  RFC Destination> destination crmsys_CUS_04 host crmsys system CUS systnr 4 (crmsys_CUS_04)

    A Wed Aug 31 15:46:21 2011
    A  RFC Options> H=crmsys,S=04,d=2,
    A  RFC FRFC> fallback activ but this is not a central instance.
    A  RFC rfc/signon_error_log = -1
    A  RFC rfc/dump_connection_info = 0
    A  RFC rfc/dump_client_info = 0
    A  RFC rfc/cp_convert/ignore_error = 1
    A  RFC rfc/cp_convert/conversion_char = 23
    A  RFC rfc/wan_compress/threshold = 251
    A  RFC rfc/recorder_pcs not set, use defaule value: 2
    A  RFC rfc/delta_trc_level not set, use default value: 0
    A  RFC rfc/no_uuid_check not set, use default value: 0
    A  RFC rfc/bc_ignore_thcmaccp_retcode not set, use default value: 0
    A  RFC Method> initialize RemObjDriver for ABAP Objects
    M  ThrCreateShObjects          allocated 13730 bytes at 0FFB0040

    N Wed Aug 31 15:46:22 2011
    N  SsfSapSecin: putenv(SECUDIR=D:\usr\sap\CUS\DVEBMGS04\sec): ok

    N  =================================================
    N  ===...SSF Security Toolkit name SAPSECULIB .
    N  ===...SSF trace level is 0 .
    N  ===...SSF library is D:\usr\sap\CUS\DVEBMGS04\exe\sapsecu.dll .
    N  ===...SSF hash algorithm is SHA1 .
    N  ===...SSF symmetric encryption algorithm is DES-CBC .
    N  ===...sucessfully completed.
    N  =================================================

    N Wed Aug 31 15:46:23 2011
    N  MskiInitLogonTicketCacheHandle: Logon Ticket cache pointer retrieved from shared memory.
    N  MskiInitLogonTicketCacheHandle: Workprocess runs with Logon Ticket cache.
    M  JrfcVmcRegisterNativesDriver o.k.
    W  =================================================
    W  === ipl_Init() called
    B    dbtran INFO (init_connection '<DEFAULT>' [ORACLE:700.08]):
    B     max_blocking_factor =  15,  max_in_blocking_factor      =   5,
    B     min_blocking_factor =  10,  min_in_blocking_factor      =   5,
    B     prefer_union_all    =   0,  prefer_join                 =   0,
    B     prefer_fix_blocking =   0,  prefer_in_itab_opt          =   1,
    B     convert AVG         =   0,  alias table FUPD            =   0,
    B     escape_as_literal   =   1,  opt GE LE to BETWEEN        =   0,
    B     select *            =0x0f,  character encoding          = STD / <none>:-,
    B     use_hints           = abap->1, dbif->0x1, upto->2147483647, rule_in->0,
    B                           rule_fae->0, concat_fae->0, concat_fae_or->0

    W Wed Aug 31 15:46:24 2011
    W    ITS Plugin: Path dw_gui
    W    ITS Plugin: Description ITS Plugin - ITS rendering DLL
    W    ITS Plugin: sizeof(SAP_UC) 2
    W    ITS Plugin: Release: 700, [7000.0.52.20050900]
    W    ITS Plugin: Int.version, [32]
    W    ITS Plugin: Feature set: [10]
    W    ===... Calling itsp_Init in external dll ===>
    W  === ipl_Init() returns 0, ITSPE_OK: OK
    W  =================================================
    E  Enqueue Info: rdisp/wp_no_enq=1, rdisp/enqname=<empty>, assume crmsys_CUS_04
    E  Replication is disabled
    E  EnqCcInitialize: local lock table initialization o.k.
    E  EnqId_SuppressIpc: local EnqId initialization o.k.
    E  EnqCcInitialize: local enqueue client init o.k.

    B Wed Aug 31 15:46:48 2011
    B  table logging switched off for all clients

    M Wed Aug 31 15:47:55 2011
    M  SecAudit(RsauShmInit): WP attached to existing shared memory.
    M  SecAudit(RsauShmInit): addr of SCSA........... = 05BD0040
    M  SecAudit(RsauShmInit): addr of RSAUSHM........ = 05BD07A8
    M  SecAudit(RsauShmInit): addr of RSAUSLOTINFO... = 05BD07E0
    M  SecAudit(RsauShmInit): addr of RSAUSLOTS...... = 05BD07EC

    A Wed Aug 31 15:48:44 2011
    A  RFC FRFC> fallback on the central gateway crmsys sapgw04 activ

    B Wed Aug 31 15:49:47 2011
    B  dbmyclu : info : my major identification is 3232288873, minor one 4.
    B  dbmyclu : info : Time Reference is 1.12.2001 00:00:00h GMT.
    B  dbmyclu : info : my initial uuid is D98FA690E8AA314D9B69930868792664.
    B  dbmyclu : info : current optimistic cluster level: 0
    B  dbmyclu : info : pessimistic reads set to 2.

  • Communication between Abap and Java and Java to Abap

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  • Communication between c++ and java

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