beginner

Learn java today Chapter
1: Understand its origin
2: Understand its characteristics
3: Understand its composition
4: Install, configure, and use the javaSE development environment
Personal understanding:
(1)
Java founder Gosling java was originally born to embed devices But due to some coincidences, it entered the Internet and developed rapidly. java was released on May 23, 1995, and then the java toolkit was successively developed.
(2)
In 1999, SUN divided the java2 platform into 3 versions in 3 major fields: J2SE, J2EE, J2ME. In the following years, java rose rapidly on the enterprise platform, which led Microsoft to launch a NET platform with a similar architecture to java, which ended java's dominance.
(3)
Features: simple, portable, dynamic, high-performance, safe.