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In Java, both Integer.parseInt() and Integer.valueOf() methods are used for the conversion of a String into an Integer. These static methods belong to the Integer class of java.lang package and throws a NumberFormatException if the string is not a valid representation of an integer. But ...
We usually write numbers using a place-value system. For example, in decimal 1101 means 1.103 + 1.102 + 0.10 + 1 and in binary 1101 would mean 1.23 + 1.22 + 0.2 + 1 (= 13 in decimal). In general, a position numbering system encodes the numbers as ...