Anyone can be affected by avascular necrosis. However, it's most common in people between the ages of 30 and 60. Because of this relatively young age range, avascular necrosis can have significant long-term consequences. Symptoms.
JDK (Java Development Kit). 1  It is a bundle of software that you can use to develop Java based applications. 2  Java Development Kit is needed for developing java applications. 3  The JDK needs more Disk space as it contains the JRE along with various development tools.
The JDK is installed in different locations on different UNIX and Linux operating systems according to the OS or Java vendor recommendations. There is no standard installation location for the JDK between UNIX/Linux systems. Historically it has been installed in one of the directories listed below.