怎样在Mac OS X上面指定Eclipse启动时用指定的某一版本号JDK？

编辑 $ECLIPSE_HOME/Eclipse.app/Contents/MacOS/eclipse.ini 文件。在 Finder 中右键或者Ctrl+点击 Eclipse 应用程序。然后点击“显示包内容”，进入文件夹 Contents/MacOS/ 就可以找到
通过 ls -ltr /Library/

name=Java" class="t_tag" style="word-wrap: break-word; cursor: pointer; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(255, 0, 0); white-space: nowrap; font-family: Helvetica, Arial, sans-serif; font-size: 14px;">Java/Java

name=Virtual" class="t_tag" style="word-wrap: break-word; cursor: pointer; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(255, 0, 0); white-space: nowrap; font-family: Helvetica, Arial, sans-serif; font-size: 14px;">VirtualMachines/ 列出已经安装好的各个 JDK 

name=%E7%89%88%E6%9C%AC" class="t_tag" style="word-wrap: break-word; cursor: pointer; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(255, 0, 0); white-space: nowrap; font-family: Helvetica, Arial, sans-serif; font-size: 14px;">版本号的路径，然后在 eclipse.ini 文件里指定之，比方：
-vm
/Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/bin/java

系统默认则是
/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java

同一时候，能够先通过运行 /usr/libexec/java_home -V 能够查看全部的 JAVA_HOME 指向哪。比方：
Matching Java Virtual Machines (5):
    1.8.0_25, x86_64:   "Java SE 8"     /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home
    1.8.0_20, x86_64:   "Java SE 8"     /Library/Java/JavaVirtualMachines/jdk1.8.0_20.jdk/Contents/Home
    1.7.0_71, x86_64:   "Java SE 7"     /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home
    1.6.0_65-b14-466.1, x86_64: "Java SE 6"     /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
    1.6.0_65-b14-466.1, i386:   "Java SE 6"     /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

/Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home

ls -ltr /usr/libexec/java_home 显示文件信息