How can i put data in a HashMap where I don't want duplicate key like string=a and string=A should be same

Question

How can i put data in a HashMap where I don't want duplicate keys like string=a and string=A should be same.

eg:HashMap<String, Integer> map = new HashMap<String, Integer>(); map.put("A", 37); map.put("a", 37);

I want both A and a should be considered same.

@dotnetom thanks, I already got out from this problem by taking first parameter in lower cases. — Lalit, Jun 25 '14 at 10:04

score 0 · Accepted Answer · edited May 23 '17 at 12:29

I guess this is Java

import java.util.HashMap;

public class CaseInsensitiveMap extends HashMap<String, String> {

    @Override
    public String put(String key, String value) {
       return super.put(key.toLowerCase(), value);
    }

    // not @Override because that would require the key parameter to be of type Object
    public String get(String key) {
       return super.get(key.toLowerCase());
    }
}

Soluce by @Vishal Here

How can i put data in a HashMap where I don't want duplicate key like string=a and string=A should be same

1 Answers1