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Java version for Tomcat

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linux-howto

http://unix.stackexchange.com – I want to run my Tomcat with Java 7 but all I found about configuring it doesn't work. The management interface of Tomcat shows 1.6.0_24-b24 as Java version. The JAVA_HOME variable is empty. % echo $JAVA_HOME I understand that in this case Tomcat uses the system default Java, which should be 7. % java -version java version "1.7.0_09" OpenJDK Runtime Environment (IcedTea7 2.3.3) (7u9-2.3.3-0ubuntu1~12.04.1) OpenJDK 64-Bit Server VM (build 23.2-b09, mixed mode) I changed it with update-alternatives. What part of the configuration am I missing? (HowTos)