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In the bitwise operation, the value of the byte array element {{b\[i\]}} is promoted to an {{int}} by sign-extension. When a byte array element contains a negative value (for example, {{0xff}}), the sign-extension propagates 1-bits into the upper 24 bits of the {{int}}. This behavior might be unexpected if the programmer is assuming that {{byte}} is an unsigned type. In this example, adding the promoted byte values to {{result}} fails to result in a packed integer representation of the bytes \[[FindBugs 2008|AA. Bibliography#FindBugsReferences#FindBugs 08]\].