ava's design allows app development and performance to be decoupled (to a good extent, when compared to C or C++). Combined with the lower learning curve (again

ava's design allows app development and performance to be decoupled (to a good extent, when compared to C or C++). Combined with the lower learning curve (again, compared to that which ruled before - aka C++), this commoditizes app development and has hence found much adoption in industry, leaving a small team of specialists to work on performance (& the jvm). Adoption leads to funds leads to research and/or improvements until Java expanded to include much of what needed to be done via programming, in other words, you can get almost everything you want done in java. In other words, Java is an industry standard, or if you will, a household name. So why do we need Java ? same reason as we need division of labour.