How to install OpenJDK 21 and 22 23 in Fedora 17 18 19 20 1.6 1.7 1.8 system Coexistence

First of all, in the high fedora, there is no java-openjdk-1.6 package that needs to be downloaded online, such as CentOS java-openjdk-1.6 package in 7: java-1.6.0-openjdk-1.6.0.36-1.13.8.1.el7_1.x86_64.rpm, measured can be installed in Fedora 20.

The following is reproduced, the main note installation prompts "Java-1.7.0-openjdk obsoletes java-1.6.0-openjdk", the use of rpm-nodeps can, and then also need: update-alternatives- Config Java and update-alternatives--config Javac, specifying version 1.6:

Yum Install java-1.6.0-openjdk--releasever=16--nogpgcheck

(--nogpgcheck because Yum complains of not have the key for Fedora, maybe there are better to ways this)

But This shows, that java-1.7.0-openjdk obsoletes java-1.6.0-openjdk and skips. And it shows that's the packagexorg-x11-fonts-type1 is needed. So I did

Yum Install Xorg-x11-fonts-type1

And then I used the OPENJDK package which Yum downloaded but refused to install because of theobsoletes

RPM--nodeps-ihv/var/cache/yum/x86_64/16/updates/packages/java-1.6.0-openjdk-1.6.0.0-68.1.11.5.fc16.x86_64.rpm

(--nodeps for overriding the obsoletes warning)

Now I have both Java 1.6 and Java 1.7 in my system. Java 1.7 is my default. and Java 1.6 is In/usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java.

PS: There won ' t be any conflicts to you install both 1.7 and 1.6. The reason for removing 1.6 from Fedora is, that OpenJDK6 willno longer get security updates after November 2012.

Ps:please vote up, if your liked my answer.

#update-alternatives--config Java

There are 2 programs which provide ' Java '.

Selection Command
-----------------------------------------------
*+ 1/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.79-2.5.5.0.fc20.x86_64/jre/bin/java
2/usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java

Enter to keep the current selection[+], or type selection number:2

# update-alternatives--config javac

There is 1 program that provides ' Javac '.

  selection    Command
-----------------------------------------------
*+ 1           /usr/lib/jvm/ Java-1.7.0-openjdk-1.7.0.79-2.5.5.0.fc20.x86_64/bin/javac

Enter to keep the current selection[+], or type Selection number: