How to use a DropDownList in Java Swing.Its very very Urgent
Hi Sir,
Here i need to know how to do (or) create a dropdownlist by using Java Swing.I know that there is JMenuBar & JMenuItems without using that when i click a JButton for example the dropdownlist should come from the top to bottom.I have already posted this quesion once.And i found that it has been removed.So i hope that this time i will get a better answer.Pls.do provide the code as well sir.So that i will be very thankful to u.Since i am involved in a project which contains this
feature.It is very very Urgent.So pls.do provide the code i will be waiting for the reply.
Thanx,
m.ananthu
use JComboBox
JComboBox liste = new JComboBox(new Object[]{"azerty","qwerty});the api documentation :
http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/JComboBox.html
the turotial on combobox :
http://java.sun.com/docs/books/tutorial/uiswing/components/combobox.html
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How to do a dropdownlist in java Swing much like a JMenuBar items
Hi sir,
Here i want to know how to do a dropdownlist in java swing much like a JMenuBar items falling from the top to bottom .Here i should not use JMenuBar in any way.
So that i need to do the dropdownlist by using other feature only.Since i am new to this.I need ur help urgently.Pls do provide the code for this so that i will be so gratefull to u.It is very Urgent.Since i have involved in a project which involves this feature.Pls. do provide the answer as well as the code quickly as possible.
Thanx
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How to use host variable in Java?
How do I use host variable in java? I am getting SQL code of -404 and description of SQL code is The UPDATE or INSERT statement specifies a String that is too long column-name SQLSTATE=22001. Below is my code:
* i n s e r t M e s s a g e
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sql.append("(");
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sql.append(",").append("'I'");
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sql.append(",").append("' '");
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sql.append(",").append("CURRENT TIME");
sql.append(",").append("'").append(lastUpdateId).append("'");
sql.append(",").append("CURRENT DATE");
sql.append(",").append("CURRENT TIME");
sql.append(",").append("'").append(longMessage).append("'");
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ps.executeUpdate();
System.out.println("Refreshed Record: ");
catch (SQLException sqle) {
System.out.println("SQLException: "+ sqle + ". SQLSTATE=" + sqle.getSQLState()+" SQLCODE=" + sqle.getErrorCode());
finally {
if (ps != null) {
try {
ps.close();
ps=null;
catch (Exception e) {}
if (ps1 != null) {
try {
ps1.close();
ps1=null;
catch (Exception e) {}
if (connection != null) {
try {
connection.close();
connection = null;
catch (Exception e) {}
if (connection1 != null) {
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connection1.close();
connection1 = null;
catch (Exception e) {}
return list;
if my longMessage is smaller like one line then everything works fine, but as soon as my longMessage if greater than 254 it starts giving me -404. How do I work around or Is there any way to use host variable in Java?
All kind of help is appreciated. Any question then please email me at [email protected].
Thank you.This is what you got to do to insert a larger value.
//Assuming that message length is less than 254+ 254 characters.
//If larger then run the update loop that many times.
String longMessage = "Blah blah ... ";
String firstPart = "";
String secondPart = "";
int messageLength = longMessage.length();
if (messageLength > 254)
try
firstPart = longMessage.subString(0, 253);
secondPart = longMessage.subString(254, message);
catch (IndexOutOfBoundsException e)
//In the first insert set the first 254 characters
ps.setString(1, firstPart);
int result = ps.executeUpdate();
if (result != 0)
System.out.println("Insert sucessful ");
if (messageLength > 254)
//now update with the second part.
static String UPDATE_SECOND_PART = UPDATE my.table SET LONG_COL = LONG_COL || ? WHERE KEY_COL = ?;
ps2 = connection.getPreparedStatement(UPDATE_SECOND_PART);
ps2.setString(1, secondPart);
ps2.setString(2, businessId); //assuming that businessId is the primary key.
int result2 = ps2.executeUpdate();
if (result2 != 0)
System.out.println("Update sucessful ");
else
System.out.println("Update failed ");
else
System.out.println("Insert failed ");
}Hope this helps. -
Using console program from java swing
Can anyone please tell me if the following is possible and how to do it. I want to create a gui for mencoder and so for example i will be wanting toexecute mencoder from the swing app to find out the the auto crop values so i can visually display them. As well when i am actually encoding the files i want to somehow use the progress output from the program and visually display it in swing using a progress bar. I am just quiter sure where to start or even what doing this is called. I know it is possible just now how.
Cheers
DamianYou can use Runtime.exec or ProcessBuilder to run external programs.
If you do that, I'd suggest trying to use arguments to mencoder that change its console output to be easier to parse. I don't know if such an option exists, but many programs built for the command line provide such options, and mencoder certainly provides a lot of options. Block off a few weeks and you might make your way through a third of the manual.
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How to Use Exec function in Java Code
How to Use Exec method
I want to Execute command
net Start "some service"
using exec method of runtime class
or i use some other way if suggestAssuming you have read http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Runtime.html#exec(java.lang.String) already, I can only suggest to be more specific in what your problems are. If you are after just some example code, then download ftp://ftp.ebi.ac.uk/pub/software/textmining/monq/monq.tar.gz and have a look at the source code of monq.stuff.Exec. It does all those things which are necessary to keep track of a Process after it was created with exec.
Harald.
BioMed Information Extraction: http://www.ebi.ac.uk/Rebholz-srv/whatizit
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