Downgrade java from version 8 to 7

java version downgrade
Vaidotas picture Vaidotas · Apr 27, 2014 · Viewed 30.4k times · Source

I have installed Java 1.8 from Oracle on Ubuntu because I though it would be best, newest version compatible with previous ones. But it is not. javac 1.8 produces bytecode runnable only on the java-8-oracle, scala does not run.

Before upgrade I was using java-7-openjdk, everything was fine. While I can choose my older virtual machine using sudo update-alternatives --config java, but I also need to be able to choose older compiler. How can I do this?

Answer

Kayaman picture Kayaman · Apr 27, 2014

Use the -target flag to generate bytecode for earlier version. E.g. javac -target 1.5 FooBar.java.

There's no need to downgrade.

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