The Java runtime, java, is often in the same bin directory. If the installed version is older (i.e. it is Java 5 and you wish to use the more recent Java 7 release), you should proceed below with downloading and installing a JDK. It is possible that you have the Java runtime (JRE), but not the JDK.
Earlobe piercings typically heal completely within 4 to 6 weeks. However, ear cartilage piercings -- such as a tragus, conch or helix piercing -- do not heal fully for 3 to 6 months. Swelling and redness usually resolve fairly quickly, typically within about a week.
As we have said the time frame for a newly pierced nose to completely heal varies from 2 to 4 months for nostril piercing and 6 to 8 months for septum piercings. Swelling and other symptoms that appear immediately after the piercing is done however normally go away in 10 to 15 days.