The first java program started today, strictly speaking, is the first "Hello World" that really started to study java;
1. There is no automatic prompt, although System.out.println() still pops up automatically, but no third-party editing aids are used.
2. There must be a method in the public class, but I write the System output statement directly.
3. The main function in Java is main(String args[]), so think about it, whether there is Main() in C#, and the Main() function of some website applications. Considering the implementation, after consulting my colleagues, I found that in C#, only the Main function is needed for executable programs.
4. After the environment is configured, after a simple trial of "Hello World", I want to start a Java Web project. It turned out that Eclipse was installed incorrectly, and I installed Java instead of Jee.
5. Rewrite the installation of Java EE and configure Tomcat. Then run on server reported an error, and after consulting many parties, I realized that unlike Vs, F5 will not automatically open the browser and jump to the page.