How to use highlight in JTextArea?

i append a String text in JTextArea component. i wish that a part of String is highlighted, for example, text String has the length of 900 characters, i wish that characters between 200 and 220 are highlighted, how can i implement this? what method should i use? any suggestions and examples are appreciated. thanks!

Check out this thread:
http://forum.java.sun.com/thread.jsp?forum=57&thread=349458

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How to use highlighter feature

I have Adobe Acrobat Professional 8. I want to search an existing document and have it automatically highlight all words in my search and save the document with those words highlighted so I can print it that way.
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Rae

Hi,
I provide technical support for all adobe acrobat related questions... even those that adobe support fails to answer... if your work is interrupted because you have problems with how to use acrobat features or its giving you errors or its crashing on you... just let me know... I charge very less and support is provided!

How to use accessible highlighting in HTML?

I developing HTML5 web app and have a case when some parts of sentence should be highlighted. For example, "Your search for blac was adjusted to black".
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Can't figure out how to use home sharing

Since the latest couple iTunes updates, my family and I can not figure out how to use home sharing. Everyone in our household has their own iTunes, and for a long time we would just share our music through home sharing. But with the updates, so much has changed that we can no longer figure out how to use it.
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The problem im having is that after I am in another library through home sharing, I can't figure out how to select an album and import it to my library. They used to have it set up so that you just highlight all of the songs you want, and then all you had to do was click import. Now I don't even see an import button, or anything else like it. So im lost... I don't know if it's something im doing wrong, or if our home sharing system just isn't working properly.
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How to refresh a JPanel/JTextArea

My main problem is that I don't know how to correctly refresh a JTextArea in an Applet. I have an Applet with 2 internal frames. Each frame is comprised of a JPanel.
The first internal frame calls the second one as shown below:
// Set an internal frame for Confirmation and import the Confirm class into it//
Container CF = nextFrame.getContentPane();
//<Jpanel>
confirmation = new Confirmation( );
CF.add ( confirmation, BorderLayout.CENTER );
mFrameRef.jDesktopPane1.add(nextFrame,JLayeredPane.MODAL_LAYER);
currentFrame.setVisible(false); // Hide this Frame
nextFrame.setVisible(true); // Show Next Frame/Screen of Program
confirmation (Jpanel) has a JTextArea in it. When it's called the first time it displays the correct information (based on choices from the first frame). If a user presses the back button (to return to first frame) and changes something, it doesn't refresh in the JTextArea when they call the confirmation(Jpanel) again. I used System.out.println (called right after jtextareas code), and it shows the info has indeed changed...I guess I don't know how to correctly refresh a JTextArea in an Applet. Here is the relevent code for the 2nd Internal Frame (confirmation jpanel):
// Gather Info to display to user for confirmation //
final JTextArea log = new JTextArea(10,35);
log.setMargin(new Insets(5,5,5,5));
log.setEditable(false);
log.append("Name: " storeInfoRef.getFirstName() " "
+storeInfoRef.getLastName() );
log.append("\nTest Project: " +storeInfoRef.getTestProject() );
JScrollPane logScrollPane = new JScrollPane(log);

Here is the relevant code that I am having the problem with...
import javax.swing.*;
import java.awt.*;
import java.util.*;
public class Confirmation extends JPanel {
// Variables declaration
private StoreInfo storeInfoRef; // Reference to StoreInfo
private MFrame mFrameRef; // Reference to MFrame
private Progress_Monitor pmd; // Ref. to Progress Monitor
private JLabel ConfirmMessage; // Header Message
private JButton PrevButton; // Navigation Button btwn frames
private JInternalFrame prevFrame, currentFrame; // Ref.to Frames
// End of variables declaration
public Confirmation(MFrame mFrame, StoreInfo storeInfo) {
mFrameRef = mFrame; // Reference to MFrame
storeInfoRef = storeInfo; // Reference to Store Info
prevFrame = mFrameRef.FileChooserFrame; // Ref. to Previous Frame
currentFrame = mFrameRef.ConfirmationFrame; // Ref. to this Frame
initComponents();
// GUI for this class //
private void initComponents() {
ConfirmMessage = new JLabel();
PrevButton = new JButton();
UploadButton = new JButton();
setLayout(new GridBagLayout());
GridBagConstraints gridBagConstraints1;
ConfirmMessage.setText("Please confirm that the information "
+"entered is correct");
add(ConfirmMessage, gridBagConstraints1);
// Gather Info to display to user for confirmation //
final JTextArea log = new JTextArea(10,35);
log.setMargin(new Insets(5,5,5,5));
log.setEditable(false);
log.append("Name: " storeInfoRef.getFirstName() " "
+storeInfoRef.getLastName() );
log.append("\nTest Project: " +storeInfoRef.getTestProject() );
log.append("\nTest Director: " +storeInfoRef.getTestDirector() );
log.append("\nTest Location: " +storeInfoRef.getTestLocation() );
log.append("\nDate: " +storeInfoRef.getDate() );
String fileOutput = "";
Vector temp = new Vector( storeInfoRef.getFiles() );
for ( int v=0; v < temp.size(); v++ )
fileOutput += "\n " +temp.elementAt(v); // Get File Names
log.append("\nFile: " +fileOutput );
// log.repaint();
// log.validate();
// log.revalidate();
JScrollPane logScrollPane = new JScrollPane(log);
System.out.println("Name: " storeInfoRef.getFirstName() " " +storeInfoRef.getLastName() );
System.out.println("Test Project: " +storeInfoRef.getTestProject() );
System.out.println("Test Director: " +storeInfoRef.getTestDirector() );
System.out.println("Test Location: " +storeInfoRef.getTestLocation() );
System.out.println("Date: " +storeInfoRef.getDate() );
System.out.println("File: " +fileOutput );
// End of Gather Info //
add(logScrollPane, gridBagConstraints1);
PrevButton.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
PrevButtonMouseClicked(evt);
PrevButton.setText("Back");
JPanel Buttons = new JPanel();
Buttons.add(PrevButton);
add(Buttons, gridBagConstraints1);
// If User Presses 'Prev' Button //
private void PrevButtonMouseClicked(java.awt.event.MouseEvent evt) {
try
currentFrame.setVisible(false); // Hide this Frame
prevFrame.setVisible(true); // Show Next Frame/Screen of Program
catch ( Throwable e ) // If A Miscellaneous Error
System.err.println( e.getMessage() );
e.printStackTrace( System.err );
}// End of Confirmation class

JNI - How to use the error reporting mechanism?

I've developed a C++ DLL which is loaded from a commercial Win32 application (not written by me) as a plug-in for external calculations. On its initialization the C++ DLL launches the Java VM via the JNI invocation interface. When the DLL functions are called by the application, they forward the calls to Java objects inside the Java VM, again via JNI invocation interface.
This works well, but I have encountered a weird error.
From Java I open a JFrame containing a JTextArea as small console for debug output messages. If I turn output to this debug console off (my printToConsole routine checks whether a boolean flag is set), the string concatenation operator may lead to a crash of the Java VM.
For example, if in one of the Java functions called from the
DLL via JNI invocation interface the following is the first statement,
it leads to a crash of the Java VM and the application that loaded the C++ proxy DLL.
String test=""+Math.random(); // String test not used later
Interestingly, if I comment this statement out, the Java code works fine WITHOUT any crash. I've already thought about potential races and synchronization issues in my code, but I don't see where this is the case. And the string concatenation error fails as well, if I insert sleep() statements in front of it and at other places in the code. However, if I turn on log messages printed to my JFrame debug console (containing a JTextArea), the String concatenation works without problems.
So maybe the JNI interface has a bug and affects the Java VM; I don't see where my JNI code is wrong.
One problem is that I do not get any stdout output, as the C++ proxy DLL is loaded by the Windows application, even if I start the Windows application from the DOS command line (under Windows).
Does anyone know how to use the error reporting mechanism?
http://java.sun.com/j2se/1.4.2/docs/guide/vm/error-handling.html
Is it possible that the JVM, when it crashes, writes debug information about the crash into a file instead of stdout/stderr?
My C++ proxy DLL was compiled in debug mode, but the commercial application (which loaded the DLL) is very likely not.
I do not know hot to find the reason why the String concatenation fails inside the Java function called from the C++ DLL via JNI.

Yes, I've initially thought about errors in the C++ code too. But the C++ code is actually very simple and short. It doesn't allocate anything on the C++ side. It allocates a couple of ByteBuffers inside the Java VM however via JNI invocation interface calls of env->NewDirectByteBuffer(). The native memory regions accessed via the ByteBuffers are allocated not by my own C++ code, but by the program that calls my DLL (the program is Metastock).
The interesting thing is that everything works fine if output to my debug console is enabled, which means that in the Java print routine getConsoleLoggingState() returns true and text is appended to the jTextArea.
static synchronized void print(String str)
{ MetaStockMonitor mMon=getInstance();
if ( mMon.getFileLoggingState() && mMon.logFileWriter!=null) {
mMon.logFileWriter.print(str);
mMon.logFileWriter.flush();
if ( mMon.getConsoleLoggingState() ) {
mMon.jTextArea1.append(str);
Only if output to the JTextArea is turned off (ie. getConsoleLoggingState()==false), the crash happens when the FIRST statement in the Java routine called via JNI invocation interface is a (useless) String concatenation operation, as described above.
String test=""+Math.random(); // String test not used later
Moreover, the crash happens BEFORE the allocated ByteBuffer objects are accessed in the Java code. But again, if console output is turned on, it works stable. If console output is turned off, it works when the (useless) String concatenation operation is removed in the Java routine called from C++.
I've already thought about potential races (regarding multiple threads), but this can be ruled out in my case. It almost appears as if the JVM can have problems when called by the invocation interface (I tested it with Java 1.4.2 b28).
All the calls between C++ and Java go ALWAYS in the direction from C++ code to Java. Unfortunately, there is no special JRE version with extensive logging capabilities to facilitate debugging. And the problem is not easily reproducible either.
JNIEnv* JNI_GetEnv()
JNIEnv *env;
cached_jvm->AttachCurrentThread((void**)&env,NULL);
fprintf(logfile,"env=%i\n",env);
fflush(logfile);
return env;
// function called by Metastock's MSX plug-in interface
BOOL __stdcall createIndEngine (const MSXDataRec *a_psDataRec,
const MSXDataInfoRecArgsArray *a_psDataInfoArgs,
const MSXNumericArgsArray *a_psNumericArgs,
const MSXStringArgsArray *a_psStringArgs,
const MSXCustomArgsArray *a_psCustomArgs,
MSXResultRec *a_psResultRec)
a_psResultRec->psResultArray->iFirstValid=0;
a_psResultRec->psResultArray->iLastValid=-1;
jthrowable ex;
jmethodID mid;
JNIEnv* env=JNI_GetEnv();
jobject chart=getChart(env, a_psDataRec);
if ( chart==NULL) {
return MSX_ERROR;
jobject getChart (JNIEnv* env, const MSXDataRec *a_psDataRec)
jthrowable ex;
jmethodID mid;
int closeFirstValid, closeLastValid;
closeFirstValid=a_psDataRec->sClose.iFirstValid;
closeLastValid=a_psDataRec->sClose.iLastValid;
long firstDate, firstTime;
if (closeFirstValid>=1 && closeFirstValid<=closeLastValid) {
firstDate = a_psDataRec->psDate[closeFirstValid].lDate;
firstTime = a_psDataRec->psDate[closeFirstValid].lTime;
} else {
firstDate=0;
firstTime=0;
jclass chartFactoryClass = env->FindClass("wschwendt/metastock/msx/ChartFactory");
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot find class ChartFactory\n");
printSBufViaJava(sbuf);
return NULL;
mid = env->GetStaticMethodID(chartFactoryClass, "getInstance", "()Lwschwendt/metastock/msx/ChartFactory;");
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot find method ID for ChartFactory.getInstance()\n");
printSBufViaJava(sbuf);
return NULL;
jobject chartFactory=env->CallStaticObjectMethod(chartFactoryClass, mid);
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Exception while calling ChartFactory.getInstance()");
printSBufViaJava(sbuf);
return NULL;
mid = env->GetMethodID(chartFactoryClass, "getChartID", "(Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;IIIIIII)F");
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot find method ID for ChartFactory.getChartID()\n");
printSBufViaJava(sbuf);
return NULL;
jobject symbolBuf=env->NewDirectByteBuffer(a_psDataRec->pszSymbol, strlen(a_psDataRec->pszSymbol) );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot allocate symbolBuf\n");
printSBufViaJava(sbuf);
return NULL;
jobject securityNameBuf=env->NewDirectByteBuffer(a_psDataRec->pszSecurityName, strlen(a_psDataRec->pszSecurityName) );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot allocate securityNameBuf\n");
printSBufViaJava(sbuf);
return NULL;
jobject securityPathBuf=env->NewDirectByteBuffer(a_psDataRec->pszSecurityPath, strlen(a_psDataRec->pszSecurityPath) );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot allocate securityPathBuf\n");
printSBufViaJava(sbuf);
return NULL;
jobject securityOnlineSourceBuf=env->NewDirectByteBuffer(a_psDataRec->pszOnlineSource, strlen(a_psDataRec->pszOnlineSource) );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Cannot allocate onlineSourceBuf\n");
printSBufViaJava(sbuf);
return NULL;
// Java Function call leads to crash, if console output is turned off and
// the first statement in the Java routine is a (useless) string concatenation.
// Otherwise it works stable.
jfloat chartID=env->CallFloatMethod(chartFactory, mid, securityNameBuf, symbolBuf,
securityPathBuf, securityOnlineSourceBuf, (jint)(a_psDataRec->iPeriod),
(jint)(a_psDataRec->iInterval), (jint)(a_psDataRec->iStartTime),
(jint)(a_psDataRec->iEndTime), (jint)(a_psDataRec->iSymbolType),
(jint)firstDate, (jint)firstTime );
if (ex= env->ExceptionOccurred() ) {
env->ExceptionDescribe();
env->ExceptionClear();
sprintf(sbuf, "DLL: Exception while calling ChartFactory.getChartID()");
printSBufViaJava(sbuf);
return NULL;

How can i highlight a text item

hi to every body
i am using oracle forms 6i and I have many of text item which includes numbers of different format such as 12345 ,12-3-456,1-2345-12-23
as you know when the user doubleclick on the text item it will highlight the value .
only for the values which is not include A '-' .
my question is How can I highlight the values which is include '-' when A user doubleclick

DEAR ALL,
I have an date block and in that date block there the display items are dates in tabular forms there are many dates display when user double click on the current date or any date it show the data of that date in the next block. i want to create a (when button pressed) in my Control Block that when button press the current date color changed automatically so for that what should i wirte in when button pressed.
Thanks for you cooperation
Regards,
Kamran J. Chaudhry
Message was edited by:
Kamran J. Chaudhry

How to use XSJS file path in Controller.js file

Hi Experts,
Regarding How to use XSJS file path in Controller.js file.
I have gone through the SAP HANA Extended Application Services (Thomas Jung http://scn.sap.com/community/developer-center/hana/blog/2012/11/29/sap-hana-extended-application-services article.)
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var aUrl = '../../logic/demo_main.xsjs? (highlighted)
Suppose my XSJS file is at http://ipaddress:8000/newtest/Func.XSJS.
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var aUrl = '../../newtest/Func.xsjs?
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Can you please provide more details on this?

Dear Thomas,
I am a abap developer , recently we meet a problem on our webdynpro report performnace issue. As in the development, we use SALV_WD_TABLE to design a ALV. and verything work correctly in our DEV system.
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How do you highlight text in Pages v5?

Hi guys,
Was struggling a bit with the recent changes from Pages 5 and was wondering how we could highlight text (using different colours etc)?
Thanks !

Your question is answered in the following post:
https://discussions.apple.com/message/23519269#23519269

How to use AppleScript to set "character fill color" in Pages 5.2?

For Pages 5.2 on OSX 10.9.3, what is the correct applescript for changing the "character fill" of text in pages.
If you highlight text, you do this via your mouse in the inspector by clicking "style," "advanced option (the gear wheel to the right of bold, italics, and underline), "character fill color (clicking on the multi-color circle, not the dropdown menu), and then choosing a color that comes up in the "colors" dialogue box.
I've looked all over and cannot find how to use applescript to set the character fill color in pages.
In some examples (not directly related) I see "character fill" used.
In others, I see "colorfill."
Basically, I want to use applescript, embedded in a keyboard maestro macro, to change the background color of the text (not the text color itself) to particular colors.
Given the changes and updates to Pages this year, and to applescript, what's the easy way to do this?
Thanks!
Chuck

Pages v5.2 still does not include selection-object, or character background color entries in its AppleScript dictionary, as does Pages ’09. Indirectly, using System Events, you can get the text selection in Pages v5.2, but then you can do nothing to change the selection. No assurances as to if or when Apple will mature the AppleScript dictionary support for Pages v5 series.

How do I highlight text in Pages?

How do I highlight text in Pages - none of the menus, nor the 'Help' function seems to help...

It's tough searching for something when you can't guess the terms to use. It's called a "background color." You can choose a color from the format bar.

How do I highlight text in the new Pages? It's not clear.

I have the new version of Pages. And it appears that highlighting of text is an issue. This is a basic function.
I found there is one quick key version, but doesn't clearly explain how to change highlighting colours. How to get into it.
I have to explain this to my 80 year old mom, who we told to get a Mac because it was easier!
So if anyone has it laid out step 1, 2, 3, that would be helpful, because it's not clear to me either.
Thanks!
Apple - please to a quick fix for this one, it should be the same as changing the size or the font or like bold or italic. Simple, clear, fast and doable..... for anyone!

TO Peter,
Thanks for the list. I had found it in LibreOffice, tucked away in the Background tab of the Character pane opened by the Character... menu item in the Format menu, and named "Background Color. A few steps further down than in Pages. Apache OpenOffice has it in the same place. But both also have a hilight icon in the toolbar.
I didn't fin highlighting or Color fill in Text Edit (v1.8). Might need a further search.
But this well-equipped party of (one) oscurantist did find a shorter path to highlighting text in Pages '09, cleverly hidden in plain view! See the image below.
TO hscortez,
I'm aware that changing the text colour is not highlighting.
But YeOldMacFan pointed out how to change text colour AND how to change background colour of text, using Character fill, found in the Advanced Options (Pages 5) or the More (Pages '09) tab of the Text Inspector.
Character Fill fills the space around the character with the chosen colour. As shown above, it's essentially the same effect as dragging a hiliter pen along a line of printed text.
Unfortunately, whats shown above is the Character fill well on the format bar of Pages '09—right out in the open like the highlighter pen button in LibreOffice, and presumeably in MS Word. I don't have Pages 5 (avoiding it until a few more of the missing features arrive), but I do note that Pages for iOS offers highlight as one of the options in the contextual menu that appears when a block of text is selcted.
The process appears to be:
tap twice to select some text.
drag the handles at each end of the selection to adjust what's selected.
tap Highlight in the menu that has appeared on the screen.
One thing missing appears to be colour choice. The default is a 'hiliter yellow'. I didn't see a way to select a different colour.
"Hopefully, this will make it on their upgrade list. "
Hope is good, but taking action is useful.
Pages menu > Provide Pages Feedback > Make your request that this be added to Pages 5. Requests made through Provide ...Feedback go directly to Apple. Comments and questions here are read by users like yourself, and we don't have the ability to change the way the apps work. Not directly,anyway.
Regards,
Barry

How do i highlight text in a pdf document

how do i highlight test in PDF document?

Thank you so much, Bill, for your reply. My problem was/is that I could
not get the highlight tool to work. I tried countless times before posting
my query on the website. You assumed correctly; I was/am working with text.
I was using Adobe reader to highlight text in an Adobe doc I had created
and need to forward to a third party. I wanted to highlight that text in
the document that is salient to the actions I am asking of the third party.
Perhaps the highlight tool cannot be used in a previously created Adobe
document. In any event, I do appreciate your reply.

How can I highlight text in a document scanned in pdf format?

How can I highlight text in a document scanned in a pdf format?

If it wasn't OCRed in Acrobat then you can only use the non-text commenting tools, like the Square or Polygon. Press Ctrl+E to open the Properties bad and you could make it look like a text highlight annotation.

How to use highlight in JTextArea?

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