Replacing if else statement with pattern

I have a if else statement which might grow in the near future.

    public void decide(String someCondition){

        if(someCondition.equals("conditionOne")){
            //
            someMethod("someParameter");

        }else if(someCondition.equals("conditionTwo")){

           //
           someMethod("anotherParameter");

        }
        .
        .
        else{

            someMethod("elseParameter");

        }
}

Since, this is already looking messy, I think it would be better if I can apply any design patterns here. I looked into Strategy pattern but I am not sure if that will reduce if else condition here. Any suggestions?