The toHexString() method converts an integer value into a hexadecimal string. The Integer class defines this method with the following signature:
The given signature of the method suggests that it takes an int argument and returns a String object. The String object returned by the method is a string that represents an unsigned integer in base 16.
The toHexString() method works as follows:
- If the argument to the method is a positive value, then the method converts this value to a string of ASCII digits in hexadecimal (base 16) with no extra leading zeros.
- If the argument to the method is a negative value, the method first adds the value 232 to the value. The value so obtained is then converted to a string of ASCII digits in hexadecimal (i.e., base 16) format with no extra leading zeros.
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