J2ME in a Nutshell

Name

Integer

Synopsis

Integer provides an object wrapper for a Java int primitive value. The constructor initializes the wrapper with an int value, after which the object is immutable. The value associated with an Integer object can be retrieved as a byte, short, int or long using the byteValue(), shortValue(), intValue() and longValue() methods, respectively. If the value is too large to fit into a byte or short, the high-order bits of the integer are truncated.

The static parseInt() converts a numeric value held in a String into a primitive int. The single-argument variant of this method assumes that the string is encoded in base 10; the two-argument variant can be used to specify a different number base if necessary. A NumberFormatException is thrown if the String does not represent a valid number in the given number base. There are also two static valueOf methods that parse a string and return an Integer object-- one assumes that the String is a base 10 number, the other accepts a number base argument.

The zero-argument toString() method returns a String representation of the value of the Integer encoded as a base 10 number. There is also a static variant of this method that prints the value of a given int as a base 10 number, as well as a two-argument variant that prints a value using digits from the number base supplied as its second argument. The static toHexString(), toOctalString and toBinaryString() methods return a String that represents the value of a given int as a ...