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Историческую версию Java Compiler JPDK можно получить на Android
Теперь запустите Java код на андроид устройства.
An Online Java Compiler powered by ESS (Eagle Software Solutions).
An user can compile and execute their java code on any android mobile having internet connection.
It is an JPDK - java portable development kit.
Now write your code on tablets or phones. Best way to learn and explore java.