If I want to merge two variables and want to get the value of the resultant variable(String) for eg.
String var1 = "ab";
String var2 = "bc";
String abbc = "hello";
I have the two variables var1 and var2. On mergeing the two variables the resultant string is "abbc". I want the value of Variable abbc from this. Is it possible.
I need to use this code again and again in my programs for the same conditions. I have multiple variables named in a fixed pattern and I want to pick up the value of the variable which is derived after joining multiple variables. So, either I have to put a if else if condition in all the places or put it in a common library, which i do not want to do. So just thought that there should be some mechanism thru which this can be achieved, like eval in javascript etc.
> I need to use this code again and again in my
> programs for the same conditions. I have multiple
> variables named in a fixed pattern and I want to pick
> up the value of the variable which is derived after
> joining multiple variables. So, either I have to put
> a if else if condition in all the places or put it in
> a common library, which i do not want to do. So just
> thought that there should be some mechanism thru
> which this can be achieved, like eval in javascript
> etc.
As mentioned you should look into using a Map with String keys if you really want to do this. If you want to go even further over the top, use something like beanshell, Groovy or Javascript (evidently made easy in Java 1.6)
Or redesign so you don't have to do this.
Good Luck
Lee
If you have a lot of variables, that's bad:
Object foo1;
Object foo2;
...
Object foo1024;
You should be storing that data in an array or collection.
I suggest you read the collection framework tutorial: http://java.sun.com/docs/books/tutorial/collections/index.html
