Replacing Else If

[jingly99]

I am looking for a way to replace ELSE if condition. for example I have:

if (this.test.equals("A")) {
this.test= "B";

this.service = "B2";
return true;
}
else if (this.test.equals("B")) {
this.carrierServiceLevel = "C";

this.service = "C2";
return true;
}

Just like above we have like 10 else if.. all of that is in sequence. So if A fails, than B, else C, else D,, etc.

How can I replace this else if using some different way. I want to store this a, b c, values in DB so in future I can easily change the value in DB than hardcoding in Java..

Please let me know how can I replace this else if...

Thanks

[AndreB]

You can code your static values as enumerations (enums) and use the switch statement if you want ;-)

[jingly99]

I dont want static values, i want it to be dynamic, I want to store it in db and then remove the else if logic..

[AndreB]

Can you provide some example scenario?

If I get you right, then you can store in your db a value of the classname and then load it via the classloader. But it all depends. For me a more precise description of your problem would be great.

[jingly99]

Currently, what we do is,...

Default value selected is A, then application runs some logic, if it return "FAILURE", we want user to select next value B, again if it returns "FAILURE" , select C,

Currently we are doing this by

if(this.test.equals("A"){
this.test = "B"
return true;

}
else if(this.test.equals("B"){
this.test = "C"
return true;
}

we do this from A-F... we are using this else if to check what user has selected based on that we assign this.test to next value....

Now their is a change in values.. all the values will be for example.. instead of A it will AA, B it will be BB..

so what we decided is to store this value AA, BB , in Database, assing some sequence like AA is 1, BB is 2,, then read this table, and assign this.test to whatever the next value should be , by replacing if else and hardcoded values in that....

i hope it makes sense...

[AndreB]

Hm, maybe you can write a value class that defines a succesfunction.
And provide a method to check whether the value is valid.

public class Value {
  
       // provide logic for the value, like the real value and additional information

      public Value getSuccessor() {
              Value currentValue = this;
              // determine the next value given the "this" val (via DB?)
             ...
      }
}

The calling method would look like this

// if failure
if (!doTestValue(test.currentValue)) {
   test.currentValue = currentValue.getSuccessor();
}
return true;

does this help?