Ubuntu 14.04下安装Eclipse的经验分享
<p>ubuntu系统自带有openjdk，在终端中输入java -version命令，会有一些提示，这对后面安装没有影响主要是让大家了解一下</p><p>1</p>
<p># 首先到http://www.oracle.com/technetwork/java/javase/downloads/下载jdk，我下载的是最新版jdk-8u20-linux-i586.tar.gz，下载完成使用命令</p>
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<code class="bash functions">sudo</code> <code class="bash functions">tar</code> <code class="bash plain">zxvf jdk-8u20-linux-i586.</code><code class="bash functions">tar</code><code class="bash plain">.gz</code>
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<p> 解压</p>
<p>2</p>
<p># 然后将解压好的jdk1.8.0_20文件夹复制到/usr/lib/jvm目录里<br>
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<code class="bash functions">sudo</code> <code class="bash functions">cp</code> <code class="bash plain">-r ~</code><code class="bash plain">/jdk1</code><code class="bash plain">.8.0_20/ </code><code class="bash plain">/usr/lib/jvm/</code>
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<p>3</p>
<p># 配置环境变量 <br></p>
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<code class="bash functions">sudo</code> <code class="bash plain">gedit ~/.profile</code>
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<p><br>
在末尾加上: <br></p>
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<td class="code"><div class="container"><div class="line number1 index0 alt2"><code class="plain plain">export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_20 </code></div></div></td>
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<p>然后保存关闭，使用source更新下 <br>
source ~/.profile <br>
使用env命令察看JAVA_HOME的值 <br>
env <br>
如果显示JAVA_HOME=/usr/lib/jvm/jdk1.8.0_20，说明配置成功。</p>
<p>4</p>
<p># 修改系统默认的jdk，如下<br></p>
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<div class="line number1 index0 alt2"><code class="plain plain">sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.8.0_20/bin/java 300 </code></div>
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<div class="line number3 index2 alt2"><code class="plain plain">sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.8.0_20/bin/javac 300 </code></div>
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<code class="plain spaces"> </code><code class="plain plain">sudo update-alternatives --config java </code>
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<code class="plain spaces"> </code><code class="plain plain">sudo update-alternatives --config javac </code>
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<p>5<br>
查看java版本信息，<br>
终端输入 java -version<br>
看到如下信息，就说明修改Ok: <br>
java version "1.8.0_20"<br>
Java(TM) SE Runtime Environment (build 1.8.0_20-b26)<br>
Java HotSpot(TM) Client VM (build 25.20-b23, mixed mode)<br></p>
<p>6<br>
<br>
ubuntu下安装配置eclipse<br>
去官网http://developer.android.com/sdk/index.html下载了eclipse包adt-bundle-linux-x86-20140702.zip，下载后解压到你想放的文件夹中就可以了。<br>
解压命令 unzip adt-bundle-linux-x86-20140702.zip<br>
我放在/home/kingqi/ADT目录下<br>
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7<br>
将eclipse执行文件符号链接到/usr/local/bin。<br></p>
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<code class="bash functions">cd</code> <code class="bash plain">/usr/local/bin</code>
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<code class="bash functions">sudo</code> <code class="bash functions">ln</code> <code class="bash plain">-s </code><code class="bash plain">/home/kingqi/ADT/adt-bundle-linux-x86-20140702/eclipse/eclipse</code>
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<p>ok，大功告成，打开终端，输入eclipse就可以启动了。</p>
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