Java Fundamentals-java Cultural Foundation and operating environment

Basic Java Knowledge

1,java was a development language developed by Sun in 95, and was developed very quickly and acquired by Oracle Corporation in 09. Now divided into SE, ME, EE three development direction and software version.

2, the environment running Java is mainly implemented by the JVM (Java Virtual machine). First write the. Java end of the source file, compiled by the compiler into a. Class end of the bytecode file, and then through the interpreter to achieve consistent performance on different platforms.

The difference between 3,JVM,JRE and JDK:
Jvm,java virtual machine; Jre,java runtime Environment, Jdk;java Development Kit.

4,JDK Download and install:
Now you need to download the corresponding version of the JDK to the Oracle website, install it directly, install the configuration path, classpath two environment variables, respectively point to the JDK Bin directory and the Lib directory.

5. Use a text editor to edit Java programs, compile with Javac, and run Java. You can also write Java programs in a new project by using IDE tools such as Eclipse and MyEclipse.

6. Import the exported project in the IDE
You can directly copy the project directory directly from the workspace, or you can import it by using the Export menu.

7. The most important four points, the development experience.
More practice, the light can not write is not! Ask more, ask people forum save time! Do it yourself, debug errors grow faster! Learn to summarize, do not summarize will forget, timed summary form the best document!

Java Fundamentals-java Cultural Foundation and operating environment