Select Java application is required for running Java programs in eclipse.

When you run a Java app in eclipse, a window like this is always displayed:

Refer to the followingArticle: Bytes. UpperCode:

Package COM. tao. pattern; import Java. lang. reflect. method; public class father {public static void main (string [] ARGs) {son = new son (); method [] Methods = Son. getclass (). getmethods (); For (method M: Methods) {system. out. println (M. getname () ;}} public void show () {}} class son extends father {}

Print result:

Showmaingetclasshashcode=stostringpolicypolicyallwaitwait

It can be found that the main method of the parent class is inherited in the subclass, so there are two main methods in a class file, so the above window will pop up and let you choose.