Oracle's newly released Java 7 runtime is relatively painless to install and uninstall.

Java used to be deeply embedded in OS X, but in recent versions of the OS it's an optional install. Here is how to check to see if it is installed, and how to disable or remove it.

Java’s shady bundled adware is no longer a Windows exclusive, as Oracle has started sneaking the Ask.com toolbar into the Mac version. Similar to the Windows version, Java for OS X now attempts ...

You can check which Java version is on your Mac to see if you have the most up-to-date Java running, or you can check on the Java website.