Java beginners have a problem here, I want to ask everyone, in the JDK's command line mode, we can use Java Class Parameters, the passage of the parameters, but I don't understand it, in the IDE environment, How to implement a similar operation? ? ? I am now excessively using Eclipse3.0, but it is not very familiar with it, so this problem, I don't know how to solve it, I want to be able to initialize the introduction, I hope everyone will advise!