ä¸ã软件ä¸è½½
1ãä¸è½½JDK
äºãå®è£
JDK7.0çæ¬
1ãå
å¸è½½æå¡å¨èªå¸¦çjdk软件å
# java -version #æ¥çæå¡å¨æ¯å¦å®è£
è¿jdk
java version "1.6.0_17"
OpenJDK Runtime Environment (IcedTea6 1.7.4) (rhel-1.21.b17.el6-i386)
OpenJDK Client VM (build 14.0-b16, mixed mode)
# rpm -qa |grep gcj #æ¥çæå¡å¨å®è£
çjdk软件å
ä¿¡æ¯
libgcj-4.4.4-13.el6.i686
java-1.5.0-gcj-1.5.0.0-29.1.el6.i686
# yum -y remove java-1.5.0-gcj-1.5.0.0-29.1.el6.i686 #å¸è½½è½¯ä»¶å
2ãå®è£
jdk7.0
解åé
ç½®å®è£
# mkdir -p /usr/lib/jvm
# tar zxvf jdk-7u9-linux-i586.tar.gz -C /usr/lib/jvm
# mv /usr/lib/jvm/jdk1.7.0_09 /usr/lib/jvm/java7
3ãæ·»å jdk7.0å°ç³»ç»ç¯å¢åé
ï¼ãcp /etc/profile /etc/profile.bak #å¤ä»½
ï¼ãvi /etc/profile #ç¼è¾,å¨æåæ·»å ä¸é¢çå
容
export JAVA_HOME=/usr/lib/jvm/java7
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
ï¼ãsource /etc/profile ããã#使é
ç½®æ件ç«å³çæ
ç±äºç³»ç»ä¸å¯è½ä¼æé»è®¤çå
¶ä»çæ¬JDKï¼æ以ï¼ä¸ºäºå°æ们å®è£
çJDK设置为é»è®¤JDKçæ¬ï¼è¿è¦è¿è¡å¦ä¸å·¥ä½ã
update-alternatives --install /usr/bin/java java /usr/lib/jvm/java7/bin/java 300
update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java7/bin/javac 300
update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/java7/bin/jar 300
update-alternatives --install /usr/bin/javah javah /usr/lib/jvm/java7/bin/javah 300
update-alternatives --install /usr/bin/javap javap /usr/lib/jvm/java7/bin/javap 300
æ§è¡ä¸é¢å½ä»¤ï¼è®¾ç½®é»è®¤çæ¬ï¼æ¤å½ä»¤æ§è¡åï¼ç³»ç»ä¼ååºå½ååå¨çåç§JDKçæ¬ï¼ä¼æç¤ºä½ éæ©
# update-alternatives --config java
4ãæµè¯
# java -version # æµè¯æ¯å¦æå
java version "1.7.0_09"
Java(TM) SE Runtime Environment (build 1.7.0_09-b05)
Java HotSpot(TM) Client VM (build 23.5-b02, mixed mode)
温馨提示:内容为网友见解,仅供参考