What does it mean that object is
immutable ?
Collections.unmodifiableCollection() ?
Do we have some
examples in JDK ?
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Why should I care ?
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How to ensure
immutability ?
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But what to do in such a case ?
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"More computing sins are committed in the
name of efficiency (without necessarily
achieving it) than for any other single
reason — including blind stupidity."
W.A. Wulf