Developing a portable application

Question

Is an API included with the J2ME library that will provide details on the device the application is running on?
I developed an application with the main GUI using the Canvas class. I developed it using the Nokia emulator, and all functions and the display work as expected.
When I load the same application on a Samsung, I start to run into problems. First, the font is too small, resulting in a lot of white space on the screen. Next, on the Nokia, I was forced to define a command for the OK button. If I did not, my first menu item, was assigned to the Middle Soft Key, instead of the Left Soft Key. On the Samsung, the command does not show up.

Answer 1

First, the font is too small, resulting in a lot of white space on the screen. Unless and otherwise u create ur own bitmap font , u cant make ur system font to be displayed same in all the devices since every device has its own system font.
I was forced to define a command for the OK button. If I did not, my first menu item, was assigned to the Middle Soft Key, instead of the Left Soft Key. On the Samsung, the command does not show up.I came across the same problem .As the softkey code in nokia and samsung differs u get this problem . I will give a snip of code . May it can help u
switch(keycode){
         case LEFT_SOFT_KEY:   // -6 for nokia
         case LEFT_SOFT_KEY:  // -21 for motorola
                 now ur  code should start here for the left soft key
                 break;This is how i made my application run over all the diff devices
Regrds
Pravin