ubuntu13.04下安裝jdk7

2024-06-28 13:28:08

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Ubuntu13.04下安裝jdk7參考http://www.neversaydie.cc/ubuntu-install-jdk-in-detailed/?而來(lái)

1.手工從Oralce官網(wǎng)下載jdk-7u25-linux-x64.gz?然后mv?jdk-7u25-linux-x64.gz?/usr/local/devtools

2.解壓?tar?zxvf?jdk-7u25-linux-x64.gz

3.設(shè)置環(huán)境變量

vim /etc/PRofile

按a進(jìn)入編輯模式，在文件最后輸入

#set java environment

export?JAVA_HOME=/usr/local/devtools/jdk1.7.0_25??
export?CLASSPATH=.:${JAVA_HOME}/lib:$CLASSPATH
export?PATH=${JAVA_HOME}/bin:$PATH
按ESC退出編輯模式，輸入:wq

PS：看到有好多人設(shè)置了JRE_HOME，個(gè)人認(rèn)為沒(méi)有必要 使命令生效 source?/etc/profile 4.再次設(shè)置環(huán)境變量vim /etc/bash.bashrc

按a進(jìn)入編輯模式，在文件最后輸入

#set java environment

export?JAVA_HOME=/usr/local/devtools/jdk1.7.0_25??
export?CLASSPATH=.:${JAVA_HOME}/lib:$CLASSPATH
export?PATH=${JAVA_HOME}/bin:$PATH
按ESC退出編輯模式，輸入:wq

使命令生效 source?/etc/bash.bashrc

5.如果ubuntu可能還會(huì)有默認(rèn)的jdk，如openjdk；為了使默認(rèn)使用的是我們安裝的jdk，還需執(zhí)行如下命令:

sudo?update-alternatives?--install?/usr/bin/java?java?/usr/local/devtools/jdk1.7.0_25/bin/java?300
sudo?update-alternatives?--install?/usr/bin/javac?javac?/usr/local/devtools/jdk1.7.0_25/bin/javac?300
sudo?update-alternatives?--install?/usr/bin/jar?jar?/usr/local/devtools/jdk1.7.0_25/bin/jar?300
sudo?update-alternatives?--install?/usr/bin/javah?javah?/usr/local/devtools/jdk1.7.0_25/bin/javah?300
sudo?update-alternatives?--install?/usr/bin/javap?javap?/usr/local/devtools/jdk1.7.0_25/bin/javap?300

sudo?update-alternatives?--config?java 6.驗(yàn)證安裝是否成功java -version出現(xiàn)一下信息則說(shuō)明成功了java version "1.7.0_25" Java(TM) SE Runtime Environment (build 1.7.0_25-b15) Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)

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