<1># rpm -qa|grep jdk ← 查看jdk的信息或直接执行
或

rpm -q jdk

或

java -version

< 2># rpm -qa | grep gcj ← 确认gcj的版本号
< 3># yum -y remove java-1.4.2-gcj-compat ← 卸载gcj

http://www.oracle.com/technetwork/java/javase/downloads JDK下载

cd /opt

tar xzvf *.tar.gz

mv *.tar.gz jdk

vi /etc/profile

export JAVA_HOME=/opt/jdk1.8.0_45
export PATH=$JAVA_HOME/bin:@H_<a href="/tag/403/" target="_blank" class="keywords">403</a>_96@PATH <br> export CLASSPATH=.:<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-4-Frame" role="textbox" aria-readonly="true"> <nobr> <span class="math" id="MathJax-Span-387" style="width: 14.349em; display: inline-block;"><span style="display: inline-block; position: relative; width: 11.469em; height: 0px; font-size: 125%;"><span style="position: absolute; clip: rect(1.816em 1000em 3.149em -0.424em); top: -2.717em; left: 0.003em;"><span class="mrow" id="MathJax-Span-388"><span class="mi" id="MathJax-Span-389" style="font-family: MathJax_Math-italic;">J<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.056em;"></span></span><span class="mi" id="MathJax-Span-390" style="font-family: MathJax_Math-italic;">A</span><span class="mi" id="MathJax-Span-391" style="font-family: MathJax_Math-italic;">V<span style="display: inline-block; overflow: hidden; 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overflow: hidden; height: 1px; width: 0.109em;"></span></span><span class="mi" id="MathJax-Span-397" style="font-family: MathJax_Math-italic;">E<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="texatom" id="MathJax-Span-398"><span class="mrow" id="MathJax-Span-399"><span class="mo" id="MathJax-Span-400" style="font-family: MathJax_Main;">/</span></span></span><span class="mi" id="MathJax-Span-401" style="font-family: MathJax_Math-italic;">l</span><span class="mi" id="MathJax-Span-402" style="font-family: MathJax_Math-italic;">i</span><span class="mi" id="MathJax-Span-403" style="font-family: MathJax_Math-italic;">b</span><span class="texatom" id="MathJax-Span-404"><span class="mrow" id="MathJax-Span-405"><span class="mo" id="MathJax-Span-406" style="font-family: MathJax_Main;">/</span></span></span><span class="mi" id="MathJax-Span-407" style="font-family: MathJax_Math-italic;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mi" id="MathJax-Span-408" style="font-family: MathJax_Math-italic;">t</span><span class="mo" id="MathJax-Span-409" style="font-family: MathJax_Main;">.</span><span class="mi" id="MathJax-Span-410" style="font-family: MathJax_Math-italic; padding-left: 0.163em;">j</span><span class="mi" id="MathJax-Span-411" style="font-family: MathJax_Math-italic;">a</span><span class="mi" id="MathJax-Span-412" style="font-family: MathJax_Math-italic;">r</span><span class="mo" id="MathJax-Span-413" style="font-family: MathJax_Main; padding-left: 0.269em;">:</span></span><span style="display: inline-block; width: 0px; height: 2.723em;"></span></span></span><span style="border-left: 0.003em solid; display: inline-block; overflow: hidden; width: 0px; height: 1.403em; vertical-align: -0.397em;"></span></span> </nobr></span><script type="math/tex" id="MathJax-Element-4">JAVA_HOME/lib/dt.jar:@H_<a href="/tag/403/" target="_blank" class="keywords">403</a>_96@JAVA_HOME/lib/tools.jar <br> source /etc/profile // 这条命令是让配置马上生效。</p> <p><a href="javascript:void()" class="outlink" data="/link?url=http://www.linuxidc.com/Linux/2015-01/111414.htm" rel="nofollow" target="_blank">http://www.linuxidc.com/Linux/2015-01/111414.htm</a></p> <p>.bin 的安装</p> <p><a href="http://www.jb51.cc/article/p-qhsfiqfn-dq.html">http://www.jb51.cc/article/p-qhsfiqfn-dq.html</a></p> <p>.rpm 的安装 <br> <a href="javascript:void()" class="outlink" data="/link?url=http://www.cnblogs.com/rilley/archive/2012/02/02/2335395.html" rel="nofollow" target="_blank">http://www.cnblogs.com/rilley/archive/2012/02/02/2335395.html</a></p> </div></div> <div class="topcard-tags"></div> <ul class="list-group"> <li class="list-group-item"><a href="/centos/380853.html" title="Centos6.5 启动后桌面空白，login输入用户名密码提示module is unknow">上一篇：Centos6.5 启动后桌面空白，login输</a><a href="/centos/380851.html" title="Centos 7 安装VNC步骤" class="text-muted pull-right">下一篇：Centos 7 安装VNC步骤</a> </li> </ul> </div> </div> </div> <!-- row end --> <div class="row row-sm"> <div class="col-sm-12 col-md-12 col-lg-12"> <div class="card"> <ins class="adsbygoogle" style="display:block" data-ad-format="autorelaxed" data-ad-client="ca-pub-4605373693034661" data-ad-slot="9144498553"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({});$