centos7 安装jdk

1.查找需要卸载默认的openjdk

执行：rpm -qa | grep openjdk | grep -v grep

 

2.卸载openjdk

执行命令：rpm -e --nodeps java-1.7.0-openjdk-1.7.0.91-2.6.2.3.el7.x86_64

 

3.修改/etc/profile添加一下配置

JAVA_HOME=/usr/local/java/jdk1.8.0_121

JRE_HOME=/usr/local/java/jdk1.8.0_121/jre

PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib

export JAVA_HOME JRE_HOME PATH CLASSPATH

 

4.执行 source /etc/profile

 

<!--5f39ae17-8c62-4a45-bc43-b32064c9388a:[{"blockId":"1367-1513135670788","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"1"},{"char":"."},{"char":"查"},{"char":"找"},{"char":"需"},{"char":"要"},{"char":"卸"},{"char":"载"},{"char":"默"},{"char":"认"},{"char":"的"},{"char":"o"},{"char":"p"},{"char":"e"},{"char":"n"},{"char":"j"},{"char":"d"},{"char":"k"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"8879-1513135700243","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"执"},{"char":"行"},{"char":"："},{"char":"r"},{"char":"p"},{"char":"m"},{"char":" "},{"char":"-"},{"char":"q"},{"char":"a"},{"char":" "},{"char":"|"},{"char":" "},{"char":"g"},{"char":"r"},{"char":"e"},{"char":"p"},{"char":" "},{"char":"o"},{"char":"p"},{"char":"e"},{"char":"n"},{"char":"j"},{"char":"d"},{"char":"k"},{"char":" "},{"char":"|"},{"char":" "},{"char":"g"},{"char":"r"},{"char":"e"},{"char":"p"},{"char":" "},{"char":"-"},{"char":"v"},{"char":" "},{"char":"g"},{"char":"r"},{"char":"e"},{"char":"p"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"9899-1513135700243","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[],"isRichText":true,"keepLineBreak":true}},{"blockId":"8072-1513135700243","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"2"},{"char":"."},{"char":"卸"},{"char":"载"},{"char":"o"},{"char":"p"},{"char":"e"},{"char":"n"},{"char":"j"},{"char":"d"},{"char":"k"},{"char":" "}],"isRichText":true,"keepLineBreak":true}},{"blockId":"4674-1513135700243","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"执"},{"char":"行"},{"char":"命"},{"char":"令"},{"char":"："},{"char":"r"},{"char":"p"},{"char":"m"},{"char":" "},{"char":"-"},{"char":"e"},{"char":" "},{"char":"-"},{"char":"-"},{"char":"n"},{"char":"o"},{"char":"d"},{"char":"e"},{"char":"p"},{"char":"s"},{"char":" "},{"char":" "},{"char":"j"},{"char":"a"},{"char":"v"},{"char":"a"},{"char":"-"},{"char":"1"},{"char":"."},{"char":"7"},{"char":"."},{"char":"0"},{"char":"-"},{"char":"o"},{"char":"p"},{"char":"e"},{"char":"n"},{"char":"j"},{"char":"d"},{"char":"k"},{"char":"-"},{"char":"1"},{"char":"."},{"char":"7"},{"char":"."},{"char":"0"},{"char":"."},{"char":"9"},{"char":"1"},{"char":"-"},{"char":"2"},{"char":"."},{"char":"6"},{"char":"."},{"char":"2"},{"char":"."},{"char":"3"},{"char":"."},{"char":"e"},{"char":"l"},{"char":"7"},{"char":"."},{"char":"x"},{"char":"8"},{"char":"6"},{"char":"_"},{"char":"6"},{"char":"4"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"8020-1513135700244","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[],"isRichText":true,"keepLineBreak":true}},{"blockId":"3052-1513135700245","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"3"},{"char":"."},{"char":"修"},{"char":"改"},{"char":"/"},{"char":"e"},{"char":"t"},{"char":"c"},{"char":"/"},{"char":"p"},{"char":"r"},{"char":"o"},{"char":"f"},{"char":"i"},{"char":"l"},{"char":"e"},{"char":"添"},{"char":"加"},{"char":"一"},{"char":"下"},{"char":"配"},{"char":"置"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"6949-1513135700245","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"J"},{"char":"A"},{"char":"V"},{"char":"A"},{"char":"_"},{"char":"H"},{"char":"O"},{"char":"M"},{"char":"E"},{"char":"="},{"char":"/"},{"char":"u"},{"char":"s"},{"char":"r"},{"char":"/"},{"char":"l"},{"char":"o"},{"char":"c"},{"char":"a"},{"char":"l"},{"char":"/"},{"char":"j"},{"char":"a"},{"char":"v"},{"char":"a"},{"char":"/"},{"char":"j"},{"char":"d"},{"char":"k"},{"char":"1"},{"char":"."},{"char":"8"},{"char":"."},{"char":"0"},{"char":"_"},{"char":"1"},{"char":"2"},{"char":"1"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"7577-1513135700245","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"J"},{"char":"R"},{"char":"E"},{"char":"_"},{"char":"H"},{"char":"O"},{"char":"M"},{"char":"E"},{"char":"="},{"char":"/"},{"char":"u"},{"char":"s"},{"char":"r"},{"char":"/"},{"char":"l"},{"char":"o"},{"char":"c"},{"char":"a"},{"char":"l"},{"char":"/"},{"char":"j"},{"char":"a"},{"char":"v"},{"char":"a"},{"char":"/"},{"char":"j"},{"char":"d"},{"char":"k"},{"char":"1"},{"char":"."},{"char":"8"},{"char":"."},{"char":"0"},{"char":"_"},{"char":"1"},{"char":"2"},{"char":"1"},{"char":"/"},{"char":"j"},{"char":"r"},{"char":"e"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"3112-1513135700245","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"P"},{"char":"A"},{"char":"T"},{"char":"H"},{"char":"="},{"char":"$"},{"char":"P"},{"char":"A"},{"char":"T"},{"char":"H"},{"char":":"},{"char":"$"},{"char":"J"},{"char":"A"},{"char":"V"},{"char":"A"},{"char":"_"},{"char":"H"},{"char":"O"},{"char":"M"},{"char":"E"},{"char":"/"},{"char":"b"},{"char":"i"},{"char":"n"},{"char":":"},{"char":"$"},{"char":"J"},{"char":"R"},{"char":"E"},{"char":"_"},{"char":"H"},{"char":"O"},{"char":"M"},{"char":"E"},{"char":"/"},{"char":"b"},{"char":"i"},{"char":"n"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"3635-1513135700245","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"C"},{"char":"L"},{"char":"A"},{"char":"S"},{"char":"S"},{"char":"P"},{"char":"A"},{"char":"T"},{"char":"H"},{"char":"="},{"char":"."},{"char":":"},{"char":"$"},{"char":"J"},{"char":"A"},{"char":"V"},{"char":"A"},{"char":"_"},{"char":"H"},{"char":"O"},{"char":"M"},{"char":"E"},{"char":"/"},{"char":"l"},{"char":"i"},{"char":"b"},{"char":"/"},{"char":"d"},{"char":"t"},{"char":"."},{"char":"j"},{"char":"a"},{"char":"r"},{"char":":"},{"char":"$"},{"char":"J"},{"char":"A"},{"char":"V"},{"char":"A"},{"char":"_"},{"char":"H"},{"char":"O"},{"char":"M"},{"char":"E"},{"char":"/"},{"char":"l"},{"char":"i"},{"char":"b"},{"char":"/"},{"char":"t"},{"char":"o"},{"char":"o"},{"char":"l"},{"char":"s"},{"char":"."},{"char":"j"},{"char":"a"},{"char":"r"},{"char":":"},{"char":"$"},{"char":"J"},{"char":"R"},{"char":"E"},{"char":"_"},{"char":"H"},{"char":"O"},{"char":"M"},{"char":"E"},{"char":"/"},{"char":"l"},{"char":"i"},{"char":"b"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"7186-1513135700246","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"e"},{"char":"x"},{"char":"p"},{"char":"o"},{"char":"r"},{"char":"t"},{"char":" "},{"char":"J"},{"char":"A"},{"char":"V"},{"char":"A"},{"char":"_"},{"char":"H"},{"char":"O"},{"char":"M"},{"char":"E"},{"char":" "},{"char":"J"},{"char":"R"},{"char":"E"},{"char":"_"},{"char":"H"},{"char":"O"},{"char":"M"},{"char":"E"},{"char":" "},{"char":"P"},{"char":"A"},{"char":"T"},{"char":"H"},{"char":" "},{"char":"C"},{"char":"L"},{"char":"A"},{"char":"S"},{"char":"S"},{"char":"P"},{"char":"A"},{"char":"T"},{"char":"H"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"2534-1513135751817","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[],"isRichText":true,"keepLineBreak":true}},{"blockId":"3049-1513135752681","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"4"},{"char":"."},{"char":"执"},{"char":"行"},{"char":" "},{"char":"s"},{"char":"o"},{"char":"u"},{"char":"r"},{"char":"c"},{"char":"e"},{"char":" "},{"char":"/"},{"char":"e"},{"char":"t"},{"char":"c"},{"char":"/"},{"char":"p"},{"char":"r"},{"char":"o"},{"char":"f"},{"char":"i"},{"char":"l"},{"char":"e"}],"isRichText":true,"keepLineBreak":true}},{"blockId":"4742-1513135775249","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[],"isRichText":true,"keepLineBreak":true}},{"blockId":"4850-1513135775753","blockType":"paragraph","styles":{"align":"left","indent":0,"text-indent":0,"line-height":1.75},"type":"paragraph","richText":{"data":[{"char":"5"},{"char":"."},{"char":"执"},{"char":"行"},{"char":" "},{"char":"j"},{"char":"a"},{"char":"v"},{"char":"a"},{"char":" "},{"char":"-"},{"char":"v"},{"char":"e"},{"char":"r"},{"char":"s"},{"char":"i"},{"char":"o"},{"char":"n"},{"char":" "},{"char":"查"},{"char":"看"},{"char":"j"},{"char":"a"},{"char":"v"},{"char":"a"},{"char":"版"},{"char":"本"}],"isRichText":true,"keepLineBreak":true}}]-->

5.执行 java -version 查看java版本