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Easy Learn Java: Programming Articles, Examples and Tips - Page 10


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Question: I'm having problems with the JavaComm (javax.comm) serial / parallel A

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Question: I'm having problems with the JavaComm (javax.comm) serial / parallel API from Sun ver 2.0 for the Win32 platform. It works with JDK 1.1.8 or lower, but I cannot get it to work with Java2 - 1.2.2 and 1.3. It refuses to see my serial ports...
Answer: JavaComm 2.0 works with all Java 2 distributions including 1.3 and 1.3.1. However there are a few rules:

1. Install JavaComm for each JRE you are using. Often it's difficult to figure out what JRE is in use. It can happen that you use two different versions from command line and form your
IDE where you develop your program.

2. Install three files into the places:

in32com.dll --> jre/bin
comm.jar --> jre/lib/ext
javax.comm.properties --> jre/lib

After that it should work!
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Our older tips: March 22, 2001 - Oktober 21, 2002 read here.
All published and not published on site tips you can find here


611 bytes more | 24 comments | Printer Friendly Page  Send to a Friend | Score: 5
Posted by jalex on Tuesday, January 21, 2003 (16:40:45) (5512 reads)

Question: JLabels: when I add ''too much'' text I can't see all of it.

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Question: JLabels: when I add "too much" text I can't see all of it.
Also, how to break line into a few pieces?
Possible solutions?

Answer: The getPreferredSize() method of the JLabel will return you the minimum size.
The size that required to display the text in full. But you need to choose a layout
that will not respect those sizes. Not so easy question as well Smile
It was suggested to use Jlist instead of JLabel and disable it with setEnabled(false). The selection will be disabled and you need to add your lines as lines to data model of JList.
Probably you need to take care about UI properties of JList (copy fro JLabel) to make it looking the same...
--
Sergey
******************************************************************
Our older tips: March 22, 2001 - Oktober 21, 2002 read here.
All published and not published on site tips you can find here


999 bytes more | 2 comments | Printer Friendly Page  Send to a Friend | Score: 3
Posted by jalex on Tuesday, January 21, 2003 (16:36:05) (4279 reads)

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