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Strings are immutable. Any new string defined or changed (I.E. by calling any method on string) always creates a new string. All these new strings are present in common string pool (for the sake of re-usability). So, use string builder to keep one string and do a lot of changes to it without filling up the string pool. Event better, use char arrays for extreme efficiency.
- level42 July 08, 2012As far as saving space goes, use an encoding which can accommodate all your character s in minimum bytes, plus, use compression algorithms (will cause CPU overhead).