Tag Archives: Integer

The size does matter! (partly)

Have you ever asked yourself, what memory size does an object or a primitive data type really uses? In general it uses a multiple of WORD. http://en.wikipedia.org/wiki/Word_%28computing%29 That means a multiple of 4 byte (32bit) or 8 byte (64bit), if … Continue reading

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Java Performance Tuning with maximizing Integer.valueOf(int)

With http://java.sun.com/javase/6/docs/api/java/lang/Integer.html#valueOf%28int%29 or auto boxing(uses internal a valueOf too) the cached Integer values will be used if they are between -127 and +128. Now I found coincidentally(by looking at the source) on a Java feature or more exactly on a … Continue reading

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