Question

As input parameters I can have two types of String:

codeName=SomeCodeName&codeValue=SomeCodeValue

or

codeName=SomeCodeName 

without codeValue.

codeName and codeValue are the keys.

How can I use regular expression to return the key’s values? In this example it would return only SomeCodeName and SomeCodeValue.

Answer 1

I wouldn’t bother with a regex for that. String.split with simple tokens (‘&’, ‘=’) will do the job.

String[] args = inputParams.split("&");
for (String arg: args) {
    String[] split = arg.split("=");
    String name = split[0];
    String value = split[1];
}