Java (I) basic knowledge

• Java

Common DOS commands:

History of computer language:

Javase: Java Standard Edition, which provides a complete Java core API, formerly known as J2SE;

JavaEE: Java Enterprise Edition, which is mainly developing web applications, formerly known as J2EE;

Javame: small version, used for mobile terminals, formerly known as J2ME;

Java Card: a platform that supports some java applets and runs on small memory devices;

Java language features:

Java has two core mechanisms:

JDK and JRE:

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