2010年1月25日 · The best example of this is the Math class which contains a ton of static helper methods to help you calculate things like the log of a number, the exponent of a number... etc. Where you draw the line as to what's a helper method and what's just a regular method is pretty subjective, but that's the gist of it. Other answers here are pretty good ...

2017年10月14日 · So Im creating a Helper method in Java to calculate postage based on size, but I can't seem to figure out the return part. Im still new to helper methods and accessors etc. Im using Eclipse and its

2012年8月30日 · A Helper class is one containing methods dependent on one particular scenario, methods that are not implementing the main logic of that scenario because another class does it. The Helper's methods could stay into the main-logic-implementing-class but doing so would pollute it hence they are better extracted into a distinct class (i.e. Helper).

2009年2月12日 · Secondly they are private so you can not even override in subclass so static or non-static doesn't make any difference. Thirdly a non-static private method can be called from a constructor of the class also, it need not be static. Now coming to your question of whether a private helper method should be defined as static or non-static.

2014年3月25日 · The first method is just the public-facing facade that sets up the initial conditions (parameters) of the recursive method. The real action is in the recursive method. Recursive (helper) methods usually have three things that must be determined (and coded): The initial state; The terminating condition; How to advance to the next state

2012年6月6日 · Class B has this method, but I cannot create an object of Class B and test this method since Class B gets session information from User, and I can set session information from JUnit class. I have created saveDetailsHelper method that replicates behavior of Class B - saveDetails() method, and am calling that in testDetails() method as shown above.

2013年4月9日 · I need to create lot of helper routines for converting strings. Something like : String Function1(String s) {} I would like to call them from any Activity. What is the best way to do this ? Do I need to create a class or not ? I was thinking just to have one separate file with all these functions. Is this a candidate for a package or not ?

2016年10月24日 · @Peter Lawrey I would assume it uses the compareTo(T o) method because the methods will only operate on Comparables. How e.g. the "isLessThan(T o)" is implemented is still the same as it always was in the compareTo(T o) method. I prefer having code that tells the story directly, rather than having to look up what compareTo() > 0 means. –

2013年2月25日 · and this is how i used it in main method. String help = RecursivePalindrome.helper(x); If I keep it like this then on the helper method they ask me for a return value but if i put the return help; then the method doesn't execute correctly. If I change the helper method to void then i cant put String help on my main method. This is what happens ...

2019年1月10日 · You need to make the method that you'd like to call - the_error_is_displayed in your case - a public static method. That way it can be called from anywhere. That way it can be called from anywhere. Share