What is Java and the Java VM ( Java Virtual Machine ) ? | Java Video Tutorial | the problem of supporting many operating systems and how the Java VM improves portability

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http://www.youtube.com/watch?v=hNvkR1LiV0wendofvid [starttext]This is a Video Tutorial explains What is Java and the Java VM ( Java Virtual Machine ) ? Java is a whole bunch of software engineering ideas - one of those ideas is write once run anywhere. This video explains the problem of supporting many operating systems and how the Java VM improves portability. This actually does not solve all the problems with diffrent platforms you still have to put in extra code to make things work so to say. The term your looking for is Portablitity which is why the C programming language was created. You can write code for C and copile it and run in on just about anything but it did not solve the problem with GUI API interfacing. The bigest problem with java is that its propritary and your chained to the VM so deep programming is not possible, driver is example. Good point. Portability is certainly an accurate description. And you're right it cannot do everything, such as hardware-hugging code like drivers. I'm not sure what you mean by Java being proprietary - it's open source now. You're not chained to the VM - you can implement native classes. Everything else - yes - has to go through the VM, but that's the idea.[endtext]

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[postlink] https://j2ee-tutorials-videos.blogspot.com/2012/04/what-is-java-and-java-vm-java-virtual.html [/postlink] http://www.youtube.com/watch?v=hNvkR1LiV0wendofvid [starttext]This is a Video Tutorial explains What is Java and the Java VM ( Java Virtual Machine ) ?

Java is a whole bunch of software engineering ideas - one of those ideas is write once run anywhere. This video explains the problem of supporting many operating systems and how the Java VM improves portability.

This actually does not solve all the problems with diffrent platforms you still have to put in extra code to make things work so to say. The term your looking for is Portablitity which is why the C programming language was created. You can write code for C and copile it and run in on just about anything but it did not solve the problem with GUI API interfacing. The bigest problem with java is that its propritary and your chained to the VM so deep programming is not possible, driver is example.

Good point. Portability is certainly an accurate description. And you're right it cannot do everything, such as hardware-hugging code like drivers. I'm not sure what you mean by Java being proprietary - it's open source now. You're not chained to the VM - you can implement native classes. Everything else - yes - has to go through the VM, but that's the idea.[endtext]