The issue switch java back and forth

[songwei]

I installed java 1.8.0 and 1.7.0_55 on my MAC, and followed the steps to install them in to jenv, but it could accept switching version only once. Then I checked the environment PATH and I found that both path of 1.8.0 and 1.7.0 were set in it . And I noticed that the PATH was set in script jenv_use.sh, I think it is unnecessary because we have $HOME/.jenv/candidates/java/current in PATH environment, we just need re-link current .