StringTokenizer st = new StringTokenizer(line);

Do I have to write:

String key = new String(st.nextToken());

or is it enough to write:

String key = st.nextToken();

It is sufficient to write

String key = st.nextToken();

The nextToken() method will allocate a newString containing the next token and returnit. Creating a copy of that String isredundant and wastes memory and cycles.

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