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Top 10 Advance Java Interview questions?

Top 10 Advance Java Interview questions?   What are the differences between abstract classes and interfaces in Java? What is the difference between ArrayList and LinkedList in Java? What is the purpose of the finalize() method in Java? What is polymorphism in Java and how is it achieved? What are the different types of inner classes in Java? What is the difference between static and non-static methods in Java? What are the different types of exceptions in Java and how do they differ? What is the difference between checked and unchecked exceptions in Java? How does Java handle multithreading and synchronization? What are the different types of JDBC drivers in Java and how do they differ?
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MacOS Catalina is Apple's next desktop operating system | Comingfly

MacOS Catalina is Apple's next desktop operating system



Where does macOS go from here? Sailing, apparently. Apple announced today that the next version of macOS (10.15) will be known as Catalina. And one of the big new features is a complete rethink of iTunes, which is now broken out into individual Music, Podcast and TV apps. Based on the quick preview from Apple's WWDC keynote, the Podcast app looks a lot more useful for finding new shows, thanks to a bit of machine learning. The TV app will also finally bring support for 4K HDR video to Macs, something that was only possible with the Apple TV 4K until now.



The real question for Apple is how iTunes will exist moving forward. While the individual apps make more sense than cramming more functionality into iTunes, the separation could be confusing for people who've grown used to Apple's existing software. And of course, we don't know if these apps will eventually make their way over to Windows.

As for other new features, macOS Catalina will be able to use iPads as secondary displays with "Sidecar." That works both wired and wirelessly, and it allows you to use the tablet as a touchscreen controller for the Mac, as well. Additionally, Voice Control will let you control the operating system entirely with spoken words. And you can breathe a side of relief if you're worried about privacy, as Apple says all of the voice processing happens on your device, instead of on the cloud.



Surprisingly, Apple didn't give us many other details about macOS Catalina, and said nothing about plans to bring over more iOS apps. That was a notable change in last year's macOS Mojave, and we expected Apple to make it easier for developers to port their own iOS apps for its next desktop OS. We've still got a long while until Catalina's release, however, so there's still time for Apple to shed more light on it.

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