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Webcam.getDafault() throws exception

See original GitHub issue

Just at the initialisation of the Webcam I get the below exception. It seems to happen when webcams cannot be found. If trhe webcam can be found everything works fine. I would not expect the exception to be thrown… I want to test for null in case the webcam is not found…

The first call is:

webcam = Webcam.getDefault();

log4j:WARN No appenders could be found for logger (com.github.sarxos.webcam.Webcam).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
nov 14, 2017 11:21:50 AM uk.chromis.pos.customers.CustomersView <init>
SEVERE: null
com.github.sarxos.webcam.WebcamException: java.util.concurrent.ExecutionException: com.github.sarxos.webcam.WebcamException: Cannot execute task
	at com.github.sarxos.webcam.WebcamDiscoveryService.getWebcams(WebcamDiscoveryService.java:124)
	at com.github.sarxos.webcam.Webcam.getWebcams(Webcam.java:816)
	at com.github.sarxos.webcam.Webcam.getDefault(Webcam.java:879)
	at com.github.sarxos.webcam.Webcam.getDefault(Webcam.java:856)
	at com.github.sarxos.webcam.Webcam.getDefault(Webcam.java:834)
        at .... ()

Issue Analytics

State:
Created 6 years ago
Comments:8 (5 by maintainers)

Top GitHub Comments

1reaction

sarxoscommented, Nov 15, 2017

@namitsharma99,

To automatically use default driver (included in main JAR), just remove these two dependencies from your POM:

dependency>
			<groupId>com.github.sarxos</groupId>
			<artifactId>webcam-capture-driver-ipcam</artifactId>
			<version>0.3.4</version>
		</dependency>
		<dependency>
			<groupId>com.github.sarxos</groupId>
			<artifactId>webcam-capture-driver-jmf</artifactId>
			<version>0.3.9</version>
		</dependency>

Also, please use the newest stable version of webcam capture which is 0.3.11. This will be valid for drivers as well if you would like to use non-default one. When main JAR is 0.3.11 then all drivers need to be 0.3.11.

0reactions

sarxoscommented, Nov 16, 2017

Great 😃 Good luck with your project!

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