爲什麼Tomcat使用反射來實現Catalina instancilization

Question

閱讀Tomcat 7源代碼，我只是想知道Tomcat實例Catalina爲什麼通過使用反射而不是簡單地使用new創建對象並直接調用方法來調用相關方法？

Answer 1

答案是在Bootstrap類的javadoc註釋：

/** 
* Bootstrap loader for Catalina. This application constructs a class loader 
* for use in loading the Catalina internal classes (by accumulating all of the 
* JAR files found in the "server" directory under "catalina.home"), and 
* starts the regular execution of the container. The purpose of this 
* roundabout approach is to keep the Catalina internal classes (and any 
* other classes they depend on, such as an XML parser) out of the system 
* class path and therefore not visible to application level classes. 
* 
* @author Craig R. McClanahan 
* @author Remy Maucherat 
* @version $Id: Bootstrap.java 1142323 2011-07-02 21:57:12Z markt $ 
*/ 

public final class Bootstrap { ... }