An additional jdk was installed and configured on RHEL5.
yum install java-1.7.0-openjdk.x86_64
update-alternatives
It appeared to work: java -version points to desired 1.7.
However, javac -version still points to old 1.6.
sudo update-alternatives --config javac only lists one option. I could not find the additional javac.
How do I install or configure a 1.7 javac?
That package contains only the jre. You need the java-1.7.0-openjdk-devel package.