jak配置的语句加入

export JAVA_HOME=/usr/local/jdk1.6.0_04
export JRE_HOME=/usr/local/jdk1.6.0_04/jre

export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH

export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

export JAVA_HOME=/usr/share/jre
export CLASSPATH=$CLASSPATH:.

export PATH=$PATH:/usr/share/jre/bin