compile a java file within solaris server

I have to modify a .java file in a project. But I dont have any editor to compile java. I use putty to connect server(Solaris). And using putty console I modify .java file and save it. Then I down the server and again up the server to reload the application. But still this file is not compiled means the expected result not get.
Now I want to know wheather it is possible to compile a java file within server?

Again I try to compile this .java file at that path using javac in putty. Now I get some error related to import files "can not find symbol".means it can not load another supporting java file.

Plz help me regarding this.???

re: compile a java file within solaris server

Do you know how to compile java files on your computer first?
Do you know what "can not find symbol" error means?