Cannot use java

not sure if i am in the right area but thought i would start here.
i am trying to view a webcam to watch my dog at daycare, when i try viewing it i am told that i need to upgrade my java. did that java told me i downloaded it and ready to use.
but everytime i log into the site and click on the webcam i get a blank screen. i then get a message that my security is blocking me from using java.
can someone tell me step by step what my security should be set at in order to use java. as far as i can see i have everything right.
but still cannot view it on my macbook pro. i have OS X 10.9.3.
i can view the webcam on my iphone and ipad but i need to refresh every couple minutes.
which then brings me to another question.
when i sign into the daycare it ask me if i want to use JPEG, GIF or 3G. which is the correct one.
thank you for all and any help.

dogwalker 2,
there are currently three “latest versions” available — one based on Java 6, which is distributed by Apple; one based on Java 7, which is distributed by Oracle; and one based on Java 8, which is also distributed by Oracle. Did you install the latest Java from Apple, or one of the latest versions from Oracle? If you’ve downloaded the latest Java 6 from Apple, then you’ll need to also download the latest Java applet plug-in from Oracle if your dog daycare’s webcam access is provided as a Java applet — and that plug-in comes as part of Java 7 or Java 8, either of which can be downloaded from Oracle here. Once one of these is installed, you’ll have the Java pane in System Preferences again, and you’ll need to adjust its settings appropriately.
Any software can be the source of security problems. The keys are to only use what you need to, when you need to, and to stay on top of security updates as they’re released.

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