On real world and real application C++ is still usually faster than java , mainly because of lighter memory footprint that result in better cache performance. But to use all of C++ capability you, the developer must work hard. You can achieve superior results, but you must use your brain for that.
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You cannot use C# in Android Studio . However, Java is VERY similar to C#.
Read moreIs C++ faster than Java on Android?
Though Java is a good language, C++ has quite a few more advantages for Android mobile development. C++ helps to include lower memory footprint as it has no garbage collection. C++ can compile all C programs virtually allowing the developer to reuse C software. On the other hand, Java programs run faster than C++ .
Read moreCan I use C++ in Android Studio?
The Android Native Development Kit (NDK): a toolset that allows you to use C and C++ code with Android , and provides platform libraries that allow you to manage native activities and access physical device components, such as sensors and touch input.
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