Java Development

[Timinator]

I'm fairly new at this.  Trying to obtain the amount of free memory with the following code, but the result is 0.  Any ideas?  JDE 4.5,8300 Simulator with 4.2

/*
 * MemMark.java
 */
// imports
import net.rim.device.api.ui.*;
import net.rim.device.api.ui.component.*;
import net.rim.device.api.ui.container.*;
import net.rim.device.api.system.*;
import net.rim.device.api.system.MemoryStats.*;


//extend the UiApplication
public class MemMark extends UiApplication
{
    public static void main(String[] args)
    {
        //instance the app & start event thread
        MemMark myApp = new MemMark();
        myApp.enterEventDispatcher();
    }
    public MemMark()
    {
        //show the launch screen
        pushScreen(new LaunchScreen());
    }
}

//Create the launch screen, extend MainScreen
final class LaunchScreen extends MainScreen
{
    public LaunchScreen()
    {
        //invoke the MainScreen constructor
        super();
        //get the current free memory
        MemoryStats ms = new MemoryStats();        
        int m = ms.getFree();
        //add the title
        LabelField title = new LabelField("MemMark", LabelField.ELLIPSIS | LabelField.USE_ALL_WIDTH);
        setTitle(title);
        //add text to the screen
        add(new RichTextField("Available memory:"));
        add(new RichTextField(String.valueOf(m)));
    }
    //override onClose() with exiting msg
    public boolean onClose()
    {
        Dialog.alert("Exiting...");
        System.exit(0);
        return true;
    }
}

 

[peter_strange]

JDE 4.5 and Sim 4.2? 

Just a thought, but I think the Sim and JDE need to match (or Sim can be later), in the same way as for devices - see  

What Is - Appropriate version of the BlackBerry JDE knowledge base article for assistance with choosing the correct version of the BlackBerry JDE for your environment:

http://tinyurl.com/36w5sx

[Timinator]

Nice catch.  However I've also tried thus under a 4.5 simulator and on my 8300 with the 4.5 beta, with the same results.  getFree() still returns 0. 

[twindsor · Accepted solution]

The Memory class provides MemoryStats objects that contain the information you are looking for: http://www.blackberry.com/developers/docs/4.5.0api/net/rim/device/api/system/Memory.html

Tim

[Timinator]

Changing the import to ...system.memory.* and then using: int m = Memory.getFlashFree(); did the trick.  Thanks for the assist.