Here are the three easiest ways to fix Java’s “not recognized as an internal or external command” error: Install or reinstall Java and the JDK on your computer Add Java’s bin directory to the computer ...

After the location of the JDK or JRE installation is found, those programs can initiate Java-based processes, start Java virtual machines and use command line utilities such as the Java archive ...

I use Red Hat 7.1. How can I install the JDK on my box..Thanks in advance ...