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sudo apt-get install sun-java6-jdk
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    * ÉèÖõ±Ç°Ä¬ÈϵÄjava½âÊÍÆ÷ºÍ±àÒëÆ÷£º (ubuntu9.10Èç¹ûûÓа²×°¶à¸öjavaÐéÄâ»úµÄ»°¿ÉÒÔÌø¹ýÕâÒ»²½¡£)
sudo update-alternatives --config java
Ö´Ðкó»á³öÏÖÀàËÆÈçÏµĻ­Ãæ:
There are 2 alternatives which provide `java'.
Selection Alternative
-----------------------------------------------
  # /usr/bin/gij-wrapper-4.1
  *+ 2 /usr/lib/jvm/java-6-sun/jre/bin/java
Press enter to keep the default[*], or type selection number:
ÊäÈë Óаüº¬ "sun" µÄÐеÄÇ°ÃæµÄÊý×Ö¡£ÈçÉÏÃæÏÔʾ£¬ÔòÊäÈë2£¬È»ºó»Ø³µÈ·¶¨¡£
sudo update-alternatives --config javac
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    * ÅäÖÃJAVA»·¾³±äÁ¿:
sudo gedit /etc/environment
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JAVA_HOME=/usr/lib/jvm/java-6-sun
CLASSPATH=.:/usr/lib/jvm/java-6-sun/lib
ҪʹÅäÖÃÉúЧ±ØÐëÖØÆô»úÆ÷»òÕßÔÚÃüÁîÐÐÊäÈë
. /etc/environment
    * ÅäÖÃJVMµÄÓÅÏȼ¶: (ubuntu9.10Èç¹ûûÓа²×°¶à¸öjavaÐéÄâ»úµÄ»°¿ÉÒÔÌø¹ýÕâÒ»²½¡£)
sudo gedit /etc/jvm
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/usr/lib/jvm/java-6-sun
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    * °²×°ä¯ÀÀÆ÷µÄJAVA Plugin£¨ÍƼö°²×°£©£º
sudo apt-get install sun-java6-plugin
    * ÖÐÎÄ×ÖÌåÉèÖãºÈç¹ûʹÓÃÎͦ×ÖÌåÓ¦¸Ã¿ÉÒÔ×àЧ£¬µ«ÊÇ»òÐí³öÏÖ¿Õ¸ñ£¬ÄÇô¿ÉÒԱ༭
/usr/lib/jvm/java-6-sun/jre/lib/fonts/fonts.dir


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