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1. Download the Sun JDK package from the Java website and install as follows (see Table 1
(page 12) for the correct version and website link):
Change to the Sun JDK install package directory, as appropriate for your system, and install
the package by entering the following command:
# chmod 755 jdk-1_5_0_10-linux-amd64-rpm.bin
# ./jdk-1_5_0_10-linux-amd64-rpm.bin
2. Create a symbolic link for Sun JDK by entering the following:
# ln -s /usr/java/jdk1.5.0_10 /usr/local/jdk
3. The JAVA_HOME environment variable must be properly set before stack components, such
as Tomcat, can begin executing.
To export the JAVA_HOME environment variable, modify the system file that is appropriate
for your shell, /etc/profile.d/alljava.sh or /etc/profile.d/alljava.csh:
For the alljava.sh file, add the following lines:
if [ -x /usr/local/jdk/bin/java ] ; then
export PATH=$PATH:/usr/local/jdk/bin
export JAVA_BINDIR=/usr/local/jdk/bin
export JAVA_ROOT=/usr/local/jdk
export JAVA_HOME=/usr/local/jdk
export JRE_HOME=/usr/local/jdk
unset JDK_HOME
unset SDK_HOME
export JDK_HOME=/usr/local/jdk
export SDK_HOME=/usr/local/jdk
else
if [ -x /usr/lib/java/jre/bin/java ] ; then
# it is IBMJava2-JRE or SunJava2-JRE
export PATH=$PATH:/usr/lib/java/jre/bin
export JAVA_BINDIR=/usr/lib/java/jre/bin
export JAVA_ROOT=/usr/lib/java
export JAVA_HOME=/usr/lib/java/jre
export JRE_HOME=/usr/lib/java/jre
unset JDK_HOME
unset SDK_HOME
fi
fi
For the alljava.csh file, add the following lines:
if ( -x /usr/local/jdk/bin/java ) then
setenv PATH ${PATH}:/usr/local/jdk/bin
setenv JAVA_BINDIR /usr/local/jdk/bin
setenv JAVA_ROOT /usr/local/jdk
setenv JAVA_HOME /usr/local/jdk
setenv JRE_HOME /usr/local/jdk
unsetenv JDK_HOME
unsetenv SDK_HOME
setenv JDK_HOME /usr/local/jdk
setenv SDK_HOME /usr/local/jdk
else
if (-x /usr/lib/java/jre/bin/java)then
#it is IBMJava2-JRE or SunJava2-JRE
setenv PATH ${PATH}:/usr/lib/java/jre/bin
setenv JAVA_BINDIR /usr/lib/java/jre/bin
setenv JAVA_ROOT /usr/lib/java
setenv JAVA_HOME /usr/lib/java/jre
setenv JRE_HOME /usr/lib/java/jre
unsetenv JDK_HOME
unsetenv SDK_HOME
endif
endif
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