Linux安装多个jdk版本进行切换
<p>本文为大家分享了Linux jdk安装多个版本切换的具体方法，供大家参考，具体内容如下</p>
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1. 上传jdk7 和 jdk8 包</p>
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2. 解压</p>
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<code class="bash plain"></code><code class="bash comments"># tar -zxvf /package/jdk-7u80-linux-x64.tar.gz </code>
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3. 配置jdk变量</p>
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<code class="bash plain"> </code><code class="bash functions">vi</code> <code class="bash plain">/etc/profile</code>
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<code class="bash functions">export</code> <code class="bash plain">JAVA_HOME=</code><code class="bash plain">/package/jdk1</code><code class="bash plain">.7.0_80</code>
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<code class="bash functions">export</code> <code class="bash plain">CLASSPATH=.:$JAVA_HOME</code><code class="bash plain">/lib/dt</code><code class="bash plain">.jar:$JAVA_HOME</code><code class="bash plain">/lib/tools</code><code class="bash plain">.jar</code>
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<code class="bash functions">export</code> <code class="bash plain">PATH=$PATH:$JAVA_HOME</code><code class="bash plain">/bin</code>
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4. java -version</p>
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5. 给jdk1.7设置序列号</p>
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<code class="bash plain">$ alternatives --</code><code class="bash functions">install</code> <code class="bash plain">/usr/bin/java</code> <code class="bash plain">java </code><code class="bash plain">/package/jdk1</code><code class="bash plain">.7.0_80 3</code>
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6. 安装jdk1.8</p>
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<code class="bash plain">$ alternatives --</code><code class="bash functions">install</code> <code class="bash plain">/usr/bin/java</code> <code class="bash plain">java </code><code class="bash plain">/package/jdk1</code><code class="bash plain">.8.0_124 2</code>
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7.选择jdk对应的数字--切换jdk版本</p>
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<code class="bash plain"></code><code class="bash comments"># java -version</code>
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<code class="bash plain">java version </code><code class="bash string">"1.7.0_80"</code>
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<code class="bash plain">Java(TM) SE Runtime Environment (build 1.7.0_80-b15)</code>
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<code class="bash plain">Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)</code>
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<code class="bash plain"></code><code class="bash comments"># alternatives --config java</code>
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<code class="bash plain">There are 3 programs </code><code class="bash functions">which</code> <code class="bash plain">provide </code><code class="bash string">'java'</code><code class="bash plain">.</code>
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<code class="bash spaces"> </code><code class="bash plain">Selection Command</code>
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<code class="bash plain">* 1 </code><code class="bash plain">/package/jdk1</code><code class="bash plain">.8.0_121</code><code class="bash plain">/java</code>
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<code class="bash spaces"> </code><code class="bash plain">2 </code><code class="bash plain">/package/jdk1</code><code class="bash plain">.8.0_121</code><code class="bash plain">/bin/java</code>
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<code class="bash spaces"> </code><code class="bash plain">+ 3 </code><code class="bash plain">/package/jdk1</code><code class="bash plain">.7.0_80</code><code class="bash plain">/bin/java</code>
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<code class="bash plain">Enter to keep the current selection[+], or </code><code class="bash functions">type</code> <code class="bash plain">selection number: 2</code>
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<code class="bash plain"></code><code class="bash comments"># java -version</code>
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<code class="bash plain">java version </code><code class="bash string">"1.8.0_121"</code>
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<code class="bash plain">Java(TM) SE Runtime Environment (build 1.8.0_121-b13)</code>
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<code class="bash plain">Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)</code>
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。</p>
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