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Java Java Data Structures - Retired Exploring the Java Collection Framework Maps

Keys are case sensitive in Maps.

Keys are case sensitive in maps, if it is how to make it not case sensitive

1 Answer

King Chang
PLUS
King Chang
Courses Plus Student 5,403 Points
class CustomMap extends HashMap<String, Object>{
    @Override
    public Object put(String key, Object value){     
        return super.put(key.toUpperCase(), value);
    }

    @Override
    public Object get(Object key){
        if(key instanceof String){
            return super.get(( (String) key ).toUpperCase());
        }
        throw new RuntimeException("Key Error");
    }

}