In_array jsp code

Question

Hi, can you tell me please, how can i know if some value exists in an array?
For example, in PHP i can use the function in_array(), what can i use programming JSP?

Answer 1

You can do a simple iteration search like this:
public boolean inArray(Object obj, Object[] arr){
  for (int i=0; i<arr.length; i++){
    if (obj.equalsarr){
return true;
That will do it for any object array (eg Strings)
If you want to do it with primitives, just roll your own.
If you are using java Collections, then you could use the method contains()
You could leverage that like this:
String[] names = {"Matthew", "Mark", "Luke", "John"};
List nameList = Arrays.asList(names);
if (nameList.contains("Mark")){
}Again, it won't work with primitives (unless you are using Java5 whereas it will autobox for you)
Hope this helps,
evnafets