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using Class.getResource() load resource file in Eclipse

There are many ways to load resource file in java app. What sun recommended is using Class.getResource(" resource_name ") or Class.getResourceAsStream(" resource_name ") then you will get URL and InputStream respectively. If resource_name is specified without "/", it will be prepend with Class package. So resource file must be in same place[folder structure] as the Class. What I love to do is call getResource() with "/" and put resource file at the root of package. This way i can have separate resource folder. below is in Eclipse, 1. From Package explorer right click src folder->click import 2. In import dialog, Choose General->File System ->next 3. from directory:->Browse to your resource folder. 4. to folder:-> I add "resource" as a folder name under src folder. then click "Finish". In the code, load resource with this.getClass().getResource("/resource/buttons1.png") or this.getClass().getResourceAs...
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Too many open files

Last week tomcat log file report many error about "Too many open files" when it has high traffic. Some in catalina_log say 2007-04-07 16:13:40 HttpProcessor[80][272] Starting background thread 2007-04-07 16:13:40 HttpConnector[80] accept: java.net.SocketException: Too many open files and here is from localhost_log 2007-04-07 16:13:40 StandardWrapperValve[myservlet]: Servlet.service() for servlet myservlet threw exception java.io.FileNotFoundException: /home/log/mylog_070407.log (Too many open files) This is because too many file descriptors're opened by tomcat. File descriptor can be limited in both system level and shell level. To check maximum number of fd in system type 'cat /proc/sys/fs/file-max'. In my case it is 65536(someone said it should set to 200000). Tomcat error when try to open socket number 272 so I think 65536 is ok for me for now. Anyway if u want to set it add 'fs.file-max = 200000' to /etc/sysctl.conf pnix@pnix-a7:~$ cat /proc/sys/fs/fil...
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Make your eclipse look better on ubuntu

When using eclipse on ubuntu, extra space between items and fonts size make it look awkward. I try to adjust fonts by go to [Window->Preferences->General->Appearance->Colors and Fonts]. This will not much help, reduce fonts size does not change space between item. Here is Eclipse Europa before tweak. Anyway, at last I found the way to make eclipse look more compact from googling. Thank for Wesley and Vladimir Buell for this trick . Create ".gtkrc-2.0" in your home directory enable you to customize gtk object style[more about gtkrc-2.0]. Here is my ".gtkrc-2.0". pnix@pnix-a7n:~$ cat .gtkrc-2.0 style "gtkcompact" { font_name="Sans 8" GtkButton::default_border={0,0,0,0} GtkButton::default_outside_border={0,0,0,0} GtkButtonBox::child_min_width=0 GtkButtonBox::child_min_heigth=0 GtkButtonBox::child_internal_pad_x=0 GtkButtonBox::child_internal_pad_y=0 GtkMenu::vertical-padding=1 GtkMenuBar::internal_padding=0 GtkMenuItem::horizontal_paddin...
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