How to use same validation method for two action methods

I have an action Method and validation method for this method in Struts2. I want to use this validation method for another action method. I have no Idea how to do it. Please help. The scenario is described below:

public class ApplicantRegistrationDetails extends ActionSupport {
    
     public String personOfCollectiveTrademark() {
      // some code..
         
     }

     public String insertAndValidateIECcode(){
        // I have to use same validation method
        // for this method as above.

     }

     //validation
     public void validatePersonOfCollectiveTrademark() {
       // validations for first method
     }

}

You can do it easily by using prefix based method validation.

 /**
  * Validates insertAndValidateIECcode()
  */
 public void  validateInsertAndValidateIECcode(){
    // The implementation uses same validation method
    // for personOfCollectiveTrademark().
    validatePersonOfCollectiveTrademark();
 }