This article will tell you how to install/uninstall multiple java versions on mac os both use homebrew or manually. It also shows you how to set JAVA_HOME & PATH system environment variable to make your installed JDK the default JDK. We recommend you use homebrew because it provides a lot of easy-to-use tools.
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HomeBrew is a very useful package management tool on Mac OS. It can be used to install, update, uninstall, search, and list Mac OS software packages. It makes your work simple and clear. But HomeBrew is not installed on Mac OS by default, you need to install it before using it. This article will tell
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In the previous article How To Draw Rectangle View Use Swift In the iOS App we have learned how to draw a rectangle, how to set the rectangle background color, and how to add the rectangle as the subview of the iOS app’s main view. But when we set the rectangle background color, we use
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Swift dictionary is used to store key value pair data. The stored key and value data type should be consistent. The key value data type can be declared at the dictionary variable declaration time, or the data type can be identified by the data assigned to the dictionary variable at run time. This article will
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There are three kinds of variable declaration in swift programming. You can declare a swift variable as a variable (var name: String = “jerry”) that value can be changed in code, a constant ( let x:Int = Int(10) ) that value can not be changed, and an optional variable ( var x:Int? ) that value
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This example will show you how to use a swift CGRect object to draw a rectangle in the iOS app, it also shows you how to add the rectangle as the subview of the app’s main container view. In this example, we will create a new project DrawRectangleView, and this project will be added to
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You must use a lot of Wi-Fi networks in your life, at least one Wi-Fi at home and one Wi-Fi at work. And generally, the Wi-Fi password is saved automatically in your Mac. But sometimes you need to get the Wi-Fi password again for example tell the Wi-Fi password to others but you forget the
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When I install VirtualBox on macOS, I meet an error message like this The installation failed. The installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance. I struggled for some time and finally find the solution to fix it. Now let me tell you.
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If you are a professional MacBook user, you will choose a large external monitor, so how to set up multiple monitors for one MacBook? The method is very simple. First, connect the external display with your MacBook and then do some configuration in MacOS. Please follow the below steps to do it.
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When you use a MacBook Pro to develop an iOS application, you may find the screen is not big enough, so the better way is to mirror your MacBook Pro’s screen to an external monitor, this can make your eyes relax and healthy. This article will tell you how to mirror your MacBook Pro’s screen
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