Question

what do you mean by platform independent and portable in java

Answer 1

When we compile your Java code then .class file is generated by javac compiler these codes are readable by JVM and every operating system have its own JVM so JVM is platform dependent but due to JVM java language is become platform independent.

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It means that you can run Java bytecode on any hardware that has a compliant JVM. It doesn't mean that ME is the same as SE is the same as EE. EE has EJBs, but SE and ME don't.