[gclist] Garbage collection and XML
Richard A. O'Keefe
Wed, 7 Mar 2001 13:59:41 +1300 (NZDT)
I thought there _was_ a UniqueString class in Java, but when I
looked for it, I couldn't find one.
Hans Boehm replied:
Isn't java.lang.String.intern() what you want?
It is indeed the thing that I had vaguely remembered.
What I *wanted* was a UniqueString class, with a less space-hungry
representation than Java's String class. A Java String requires
1 or 2 words of per-object overhead
4 instance variables (one word each)
2 or 3 words of per-array overhead
storage for the string proper.
The overheads are pretty substantial.