Java properties

The Lightfoot SDK allows you to provide a set of properties that can be accessed using the System.getProperty method. These properties are created at link time using the XML configuration file and XML properties files from Java libraries.

Defining properties

You define properties for your application by adding a <properties> section. This contains a number of properties stored as name/value combinations.

Setting properties at runtime

Properties can be set at runtime using the com.dctl.j2me.system.PropertyManager.setProperty method. This can be used to override a linktime property or add an additional property.

Default properties

The following table lists the properties available and their default values
Name
 Value Description
microedition.platform
 DCT Lightfoot 2
 Name of the platform
microedition.encoding
 ISO8859_1
 Character set encoding
microedition.configuration
 CLDC-1.1
 J2ME configuration information
microedition.profiles
 Various
 This changes depending on the libraries loaded
user.language
 en
 English language
dct.connection.prefix
 com.dctl.j2me.io
 Class prefix for generic connection framework connectors
dct.connection.prefix.user
Class prefix for user defined generic connection framework connectors
dct.dynamic.class.loader
 com.dctl.j2me.system.HttpClassLoader
 Name of the class loader class
dct.CalendarType
 com.dctl.j2me.util.SimpleCalendar
 Name of the calendar class
dct.TimeZoneType
 com.dctl.j2me.util.SimpleTimeZone
 Name of the time zone class
dct.ConverterType
 com.dctl.j2me.i18n.SimpleConverter
 Name of the character conversion class
dct.midp.lcdui.width
 128
 Width of the lcdui display
dct.midp.lcdui.height
 128
 Height of the lcdui display
dct.midp.lcdui.repaint.interval
 100
 Milliseconds between repaints of the lcdui display
dct.midp.lcdui.repaint.priority
 1
 Time slice priority for the lcdui repaint thread
dct.midp.lcdui.event.priority
 1
 Time slice priority for the lcdui event thread
dct.midp.lcdui.system.plain
dct.midp.lcdui.system.italice
dct.midp.lcdui.system.bold
dct.midp.lcdui.system.bolditalic
dct.midp.lcdui.proportional.plain
dct.midp.lcdui.proportional.italice
dct.midp.lcdui.proportional.bold
dct.midp.lcdui.proportional.bolditalic
dct.midp.lcdui.monospace.plain
dct.midp.lcdui.monospace.italice
dct.midp.lcdui.monospace.bold
dct.midp.lcdui.monospace.bolditalic
 Platform dependant
 X11 font names for all the different fonts used
dct.midp.lcdui.font.size.small
 8
 Small font size
dct.midp.lcdui.font.size.medium
 10
 Medium font size
dct.midp.lcdui.font.size.large
 12
 Large font size
dct.midp.lcdui.display
The X11 display to connect to. If blank (default), connects back to display 0 on the machine that downloaded the application
dct.midp.lcdui.synchronized
 1
 If set to 1, the lcdui display is synchronized, possibly reducing performance but required for MIDP.
dct.midp.lcdui.commandButtons
 2
 The number of command buttons. On a PC keyboard they map beginning with F1, F2,...
dct.midp.lcdui.softbuttons.height
 10
 The height of the softy button screen area
dct.midp.lcdui.status.height
Height of the lcdui status area (not implemented)
dct.midp.lcdui.pointer
 0
 Set to 1 to enable a pointer. Currently only supported for remote X displays
dct.midp.lcdui.key
 1
 Set to 1 to enable keyboard events.
dct.midp.rms.store
 com.dctl.j2me.rms.flash.FlashFileSystem
 Name of the class providing record store support