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The {{char}} type is the only unsigned primitive type in Java. As a result, a signed value cannot be stored and retrieved successfully from a variable of type {{char |
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}}. In particular, comparing a value of type {{char}} with -1 will never yield {{true}}. However, because the method {{read()}} returns -1 to indicate {{EOF}}, it is tempting to compare the character returned by {{read()}} with -1. This is a common error \[[Pugh 08|AA. Java References#Pugh 08]\]. |
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