java - Refactoring to expose private methods for unit testing -

i have class process string , many actions on turn turn.

those actions need done in specific order.

example:

public string process(string stringtoprocess) throws exception {      processedstring = process1(processedstring);     processedstring = process2(processedstring);     processedstring = process3(processedstring);     processedstring = process4(processedstring);     ...     processedstring = process10(processedstring);     ...      return processedstring; } 

i'm sure there better way refactor make cleaner, of all, want able unit test process1, process2 etc.

note process1, 2 etc... can whether 2 line methods or big ones.

i need process methods somehow public test them. there design pattern achieve this?

i thought using enums achieve this, thought somehow making more confusing. implementation not best sure, @ 1 glance, know what's happening.

edit: approach not bad me, process methods should private. , want unit test them. saw question, can test them if private, first step make sure couldn't done better.

you may take @ http://www.codeproject.com/articles/455228/design-patterns-3-of-3-behavioral-design-patterns#chain maybe it's kind of overkill task.

what extract process1, process2 etc separate classes. can a) test them unit tests separately b) inject them class , use them in process method in necessary order.

take post: design pattern multi-step algorithm maybe ideas there.