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在Mac上，升级IntelliJ Idea 2017.01后，运行的时候出现了一个红色的警告：
objc[8715]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/bin/java (0x102c804c0) and /Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/libinstrument.dylib (0x102d5c4e0). One of the two will be used. Which one is undefined.
解决方法：
在idea中，进行修改idea.properties
打开idea --> 工具栏Help --> Edit Custom Properties...
添加一下内容
#custom IntelliJ IDEA properties idea_rt idea.no.launcher=true
重启idea就可以了