JAVA_HOME grepppping

jalal@klein:/var/lib/tomcat7/webapps$ grep -iR java_home /var/lib/tomcat7
/var/lib/tomcat7/work/catalina.policy:// These permissions apply to javac when ${java.home] points at $JAVA_HOME/jre
/var/lib/tomcat7/work/catalina.policy:// ${java.home} points at $JAVA_HOME/jre
/var/lib/tomcat7/conf/policy.d/01system.policy:// These permissions apply to javac when ${java.home] points at $JAVA_HOME/jre
/var/lib/tomcat7/conf/policy.d/01system.policy:// ${java.home} points at $JAVA_HOME/jre
grep: /var/lib/tomcat7/conf/tomcat-users.xml: Permission denied
jalal@klein:/var/lib/tomcat7/webapps$ vi /var/lib/tomcat7/work/catalina.policy
jalal@klein:/var/lib/tomcat7/webapps$ grep -i java_home /etc/init.d/tomcat7
# The first existing directory is used for JAVA_HOME (if JAVA_HOME is not
    if [ -r "$jdir/bin/java" -a -z "${JAVA_HOME}" ]; then
	JAVA_HOME="$jdir"
export JAVA_HOME
if [ -z "${JSSE_HOME}" -a -r "${JAVA_HOME}/jre/lib/jsse.jar" ]; then
    JSSE_HOME="${JAVA_HOME}/jre/"
	TOMCAT_SH="set -a; JAVA_HOME=\"$JAVA_HOME\"; source \"$DEFAULT\"; \
	if [ -z "$JAVA_HOME" ]; then
		log_failure_msg "no JDK or JRE found - please set JAVA_HOME"
		--user $TOMCAT7_USER --exec "$JAVA_HOME/bin/java" \
			--user $TOMCAT7_USER --exec "$JAVA_HOME/bin/java" \
		--user $TOMCAT7_USER --exec "$JAVA_HOME/bin/java" \
		--user $TOMCAT7_USER --exec "$JAVA_HOME/bin/java" \
jalal@klein:/var/lib/tomcat7/webapps$ grep -iR java_home /usr/share/tomcat7
/usr/share/tomcat7/defaults.template:# JDK version 6. If JAVA_HOME is not set, some common directories for
/usr/share/tomcat7/defaults.template:#JAVA_HOME=/usr/lib/jvm/openjdk-6-jdk
/usr/share/tomcat7/bin/catalina.sh:#   JAVA_HOME       Must point at your Java Development Kit installation.
/usr/share/tomcat7/bin/catalina.sh:#                   Defaults to JAVA_HOME if empty. If JRE_HOME and JAVA_HOME
/usr/share/tomcat7/bin/catalina.sh:  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
/usr/share/tomcat7/bin/catalina.sh:  JAVA_HOME=`cygpath --absolute --windows "$JAVA_HOME"`
/usr/share/tomcat7/bin/catalina.sh:    echo "Using JAVA_HOME:       $JAVA_HOME"
/usr/share/tomcat7/bin/tool-wrapper.sh:#   JAVA_HOME       Must point at your Java Development Kit installation.
/usr/share/tomcat7/bin/tool-wrapper.sh:#                   Defaults to JAVA_HOME if empty. If JRE_HOME and JAVA_HOME
/usr/share/tomcat7/bin/tool-wrapper.sh:  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
/usr/share/tomcat7/bin/tool-wrapper.sh:  JAVA_HOME=`cygpath --absolute --windows "$JAVA_HOME"`
/usr/share/tomcat7/bin/daemon.sh:        JAVA_HOME="$2"
/usr/share/tomcat7/bin/daemon.sh:# Set JAVA_HOME to working JDK or JRE
/usr/share/tomcat7/bin/daemon.sh:# JAVA_HOME=/opt/jdk-1.6.0.22
/usr/share/tomcat7/bin/daemon.sh:# If not set we'll try to guess the JAVA_HOME
/usr/share/tomcat7/bin/daemon.sh:if [ -z "$JAVA_HOME" ]; then
/usr/share/tomcat7/bin/daemon.sh:    test -x "$JAVA_BIN" && JAVA_HOME="`dirname $JAVA_BIN`"
/usr/share/tomcat7/bin/daemon.sh:    test ".$JAVA_HOME" != . && JAVA_HOME=`cd "$JAVA_HOME/.." >/dev/null; pwd`
/usr/share/tomcat7/bin/daemon.sh:    JAVA_BIN="$JAVA_HOME/bin/java"
/usr/share/tomcat7/bin/daemon.sh:      -java-home "$JAVA_HOME" \
/usr/share/tomcat7/bin/daemon.sh:      -java-home "$JAVA_HOME" \
/usr/share/tomcat7/bin/daemon.sh:      -java-home "$JAVA_HOME" \
/usr/share/tomcat7/bin/setclasspath.sh:#  Set JAVA_HOME or JRE_HOME if not already set, ensure any provided settings
/usr/share/tomcat7/bin/setclasspath.sh:if [ -z "$JAVA_HOME" -a -z "$JRE_HOME" ]; then
/usr/share/tomcat7/bin/setclasspath.sh:    if [ -x '/usr/libexec/java_home' ] ; then
/usr/share/tomcat7/bin/setclasspath.sh:      export JAVA_HOME=`/usr/libexec/java_home`
/usr/share/tomcat7/bin/setclasspath.sh:      export JAVA_HOME="/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home"
/usr/share/tomcat7/bin/setclasspath.sh:  if [ -z "$JAVA_HOME" -a -z "$JRE_HOME" ]; then
/usr/share/tomcat7/bin/setclasspath.sh:    echo "Neither the JAVA_HOME nor the JRE_HOME environment variable is defined"
/usr/share/tomcat7/bin/setclasspath.sh:if [ -z "$JAVA_HOME" -a "$1" = "debug" ]; then
/usr/share/tomcat7/bin/setclasspath.sh:  echo "JAVA_HOME should point to a JDK in order to run in debug mode."
/usr/share/tomcat7/bin/setclasspath.sh:  JRE_HOME="$JAVA_HOME"
/usr/share/tomcat7/bin/setclasspath.sh:    if [ ! -x "$JAVA_HOME"/bin/java -o ! -x "$JAVA_HOME"/bin/javac ]; then
/usr/share/tomcat7/bin/setclasspath.sh:      echo "The JAVA_HOME environment variable is not defined correctly"
/usr/share/tomcat7/bin/setclasspath.sh:      echo "NB: JAVA_HOME should point to a JDK not a JRE"
/usr/share/tomcat7/bin/setclasspath.sh:    if [ ! -x "$JAVA_HOME"/bin/java -o ! -x "$JAVA_HOME"/bin/jdb -o ! -x "$JAVA_HOME"/bin/javac ]; then
/usr/share/tomcat7/bin/setclasspath.sh:      echo "The JAVA_HOME environment variable is not defined correctly"
/usr/share/tomcat7/bin/setclasspath.sh:      echo "NB: JAVA_HOME should point to a JDK not a JRE"
/usr/share/tomcat7/bin/setclasspath.sh:    _RUNJDB="$JAVA_HOME"/bin/jdb