objc[8838]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/bin/java (0x10e5b04c0) and /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk

我的Mac pro IDEA2017.1版本报以下错，虽然不影响使用，但是比较蛋疼。

objc[8838]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/bin/java (0x10e5b04c0) and /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/jre/lib/libinstrument.dylib (0x10e7454e0). One of the two will be used. Which one is undefined.

解决方法：
添加：idea.no.launcher=true 到 idea.properties文件中。

怎样进这个文件：

1. 在Finder 的应用程序中找到IDEA的图标，右键，显式包内容，contents→bin里面