How to configure Tomcat to use Java 7

Question

I have a web application in java 6 byte code and would like to test it in a Java 7 JVM environmment. For that purpose, I would like to configure Tomcat (fo

Answer 1

I had installed it via

sudo apt-get install tomcat7

Setting up JAVA_HOME or PATH did not help me. I had to add entry in file- /etc/default/tomcat7

# Run Tomcat as this user ID. Not setting this or leaving it blank will use the
# default of tomcat7.
TOMCAT7_USER=tomcat7

# Run Tomcat as this group ID. Not setting this or leaving it blank will use
# the default of tomcat7.
TOMCAT7_GROUP=tomcat7

# The home directory of the Java development kit (JDK). You need at least
# JDK version 1.5. If JAVA_HOME is not set, some common directories for 
# OpenJDK, the Sun JDK, and various J2SE 1.5 versions are tried.
#JAVA_HOME=/usr/lib/jvm/openjdk-6-jdk
JAVA_HOME=/usr/lib/jvm/java-8-oracle
...

This is Java 8 but you get the point.