JSR 179 Location API - Build Error (cannot find symbol)

[fro5tie]

Hi guys ive just started playing with the location api (jsr 179) for j2me, and cant figure out why theres an error, ive used try and catch around the code....

import javax.microedition.location.*;

try {

			Criteria cr = new Criteria();

			cr.setHorizontalAccuracy(500);

			LocationProvider lp = new LocationProvider.getInstance(cr);

			Location l = lp.getLocation(60);

			Coordinates c = l.getQualifiedCoordinates();

			if (c != null) {

				//do something

			}

		}

		catch (LocationException locExc) {

			System.out.println("Error Getting Location: " + locExc);

		}

my error message is

enu.java:130: unreported exception java.lang.InterruptedException; must be caught or declared to be thrown
			Location l = lp.getLocation(60);
			                           ^
1 error
com.sun.kvem.ktools.ExecutionException

am i doing something very stupid?
obviously this is only a snip of the code but if you need more just shout! any help would be greatly appreciated,thanks!

[hartti]

getLocation() can throw

LocationException - if the location couldn't be retrieved or if the timeout period expired
java.lang.InterruptedException - if the operation is interrupted by calling reset() from another thread
java.lang.SecurityException - if the calling application does not have a permission to query the location information
java.lang.IllegalArgumentException - if the timeout = 0 or timeout < -1

In your code you only catch LocationException...

Hartti

[fro5tie]

Got it sorted now yes thanks just needed to throw just Exception, thanks silly me

[mikedeklerk]

It would be nice if the actual solution would have been posted here. This topic only gives me small hints now, and I can see that one particular coder has solved his/her problem.

I am having the same problems as described in the first post. I need to make a throwable object or something?
Any help would be great!

Thanks in advance.

[grahamhughes]

When you invoke a method that can throw exceptions that are not subclasses of RuntimeException, then your code must either catch that exception, or the enclosing method must also declare itself as throwing the same exception.

For example: Connector.open() throws IOException, so:

// This is NOT OK
public InputStream openServerConnection() {
    return Connector.open(SERVER_URL);
}

// This IS OK
public InputStream openServerConnection() throws IOException {
    return Connector.open(SERVER_URL);
}

// This IS OK (but bad practice!)
public InputStream openServerConnection() {
    try {
        return Connector.open(SERVER_URL);
    } catch (IOException e) {
        return null;
    }
} 

The latter of these is bad practice, because the returned null will probably cause a NullPointerException, which will make the problem much harder to identify than the original IOException (which contained information about the actual problem).

Graham.