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For this trick worked:

1. Find the file info.plist in "/Library/Java/JavaVirtualMachines/your-JRE/Contents
2. add to info.plist in <dict>:

... <key>NSCameraUsageDescription</key> <string>OpenCV/string> <key>NSMicrophoneUsageDescription</key> <string>OpenCV</string> ...

After that I had to reopen the project in Netbeans but I was asked to grand access to the camera as it should be.