Hi,
I going to encrypt some files on my Memory card by MIDLet. I know what i need JSR-75 support. Also i hear what not all directories accessable (for ex root folders).
Where can i see a list of devices which support JSR-75 (i don't like idea to view every phone specs separetely)?
Is any way to avoid JSR-75 requirement?
Can i read and write data to files in a memory card root folder?
For direct file access from J2ME, a prerequisite is JSR-75 support.
Per device, at least for Nokia devices, you will find it listed here: http://forum.nokia.com/devices (I don't know anyone that has extracted the data to a single list of devices with JSR-75 support, but in general you assume it based on the S60 or S40 version where the support first appeared, and then assume that all devices based on that release and later will still have it).
From Java, all files/directories on the device are not accessible in any case.
It depends which device(s) you mean. Some won't have any E-drive in the first place, others might have protected files/directories not accessible to the Java VM (your MIDlet) and there can also be device where the access is not restricted. There is no universal truth in this matter.
Forum posts: 693
For direct file access from J2ME, a prerequisite is JSR-75 support.
Per device, at least for Nokia devices, you will find it listed here: http://forum.nokia.com/devices (I don't know anyone that has extracted the data to a single list of devices with JSR-75 support, but in general you assume it based on the S60 or S40 version where the support first appeared, and then assume that all devices based on that release and later will still have it).
From Java, all files/directories on the device are not accessible in any case.
Forum posts: 13
What you mean:
So, i can't read a file content on e:\ drive in J2ME?
Forum posts: 693
It depends which device(s) you mean. Some won't have any E-drive in the first place, others might have protected files/directories not accessible to the Java VM (your MIDlet) and there can also be device where the access is not restricted. There is no universal truth in this matter.