Yes. One of the fundamental principles of Java is "write once,
run anywhere." This means that Java source code can run on any
platform for which a JVM exists, regardless of where the original
code was developed.
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Java is called as platform independent because it uses the
WORA(Write Once and Run Anywhere) principle.
Java programming language is designed to be run under any OS and
that is the main advantage of it.
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Anywhere You Run To was created in 1982.
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Depending on how you learn and how quickly, anywhere from once
to hundreds of times.