JDK6、JDK7、JDK8三個(gè)版本的匯總地址：https://pan.baidu.com/s/1pKSYv8Z

安裝

JDK6安裝

JDK6下載地址

見網(wǎng)盤

安裝完畢后確認(rèn)版本

JavaForOSX2014-001.dmg contains?Javafor Mac OS X (1.6.0_65-b14-462).It will be installed to?* /System/Library/Java?*?and /System/Library/Frameworks while?Oracle?Java is located at?/Library/Java

>cd /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

>./bin/java -version

java version "1.6.0_65"

Java(TM) SE Runtime Environment (build 1.6.0_65-b14-466.1-11M4716)

Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-466.1, mixed mode)

JDK7安裝

JDK7下載地址

安裝完畢后確認(rèn)版本

JDK7之后，安裝目錄比較規(guī)范化了，按著版本號(hào)在/Library/Java/JavaVirtualMachines/下自動(dòng)建立子目錄

/Library/Java/JavaVirtualMachines>ls -lrt

total 0

drwxr-xr-x 3 root wheel 102 11 2 15:22 jdk1.7.0_67.jdk

drwxr-xr-x 3 root wheel 102 11 3 14:58 jdk1.7.0_71.jdk

drwxr-xr-x 3 root wheel 102 4 9 13:44 jdk1.8.0_40.jdk5

JDK8安裝

安裝和下載同JDK7

每次安裝完后，自動(dòng)更新/usr/libexec/java_home

/Users/lcz>/usr/libexec/java_home

/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home

配置多JDK版本環(huán)境

修改profile文件

1.打開~/.bash_profile，沒有的話創(chuàng)建

vim ~/.bash_profile

2.在文件中寫入，保存、退出

export JAVA_6_HOME=/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

export JAVA_7_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home

export JAVA_8_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home

alias jdk6="export JAVA_HOME=$JAVA_6_HOME" #編輯一個(gè)命令jdk6，輸入則轉(zhuǎn)至jdk1.6

alias jdk7="export JAVA_HOME=$JAVA_7_HOME" #編輯一個(gè)命令jdk8，輸入則轉(zhuǎn)至jdk1.8

alias jdk8="export JAVA_HOME=$JAVA_8_HOME" #編輯一個(gè)命令jdk8，輸入則轉(zhuǎn)至jdk1.8

export JAVA_HOME=`/usr/libexec/java_home` #最后安裝的版本，這樣當(dāng)自動(dòng)更新時(shí)，始終指向最新版本

驗(yàn)證

/Users/lcz>. .bash_profile

/Users/lcz>java -version

java version "1.8.0_40"

Java(TM) SE Runtime Environment (build 1.8.0_40-b27)

Java HotSpot(TM) 64-Bit Server VM (build 25.40-b25, mixed mode)

/Users/lcz>jdk6

/Users/lcz>java -version

java version "1.6.0_65"

Java(TM) SE Runtime Environment (build 1.6.0_65-b14-466.1-11M4716)

Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-466.1, mixed mode)

/Users/lcz>jdk7

/Users/lcz>java -version

java version "1.7.0_71"

Java(TM) SE Runtime Environment (build 1.7.0_71-b14)

Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)

【補(bǔ)充jdk1.8命令安裝】

Brew下載并安裝JDK1.8

brew cask search java

brew caskinstall?java

java -version

總結(jié)

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