how to compare two strings in java?

Question

I have list of situation like below: string A <-------> string B

I should compare A with B with following condition:

1- if number shown in read is different in both side but the rest is the same it means A = B.

2- there is in some situation like the first one in A side after number shown in red there is not white space but in b side there is a white space after number shown in red and also after X.

3- there is also different cases like number 3

Now how can i best compare this two string?

private static void controlSimilarity(String memo,String ck,String bc,String id,String product) {

           if(!id.equals(product)){

            listIdentifier.add(new MmoCnBcIdProduct(memo,ck,bc,id,product));
           }

Answer 1

I'd try to "normalize" strings. Make both uppercase, replace "s+Xs+" with "X", replace "s+%" with "%", "s+MG" with "MG" etc., then split it by whitespaces or some regex (Scanner class or Guava's Splitter) and compare parts of the string.