The Character.isDigit(int codePoint) java method determines if the specified character (Unicode code point) is a digit.
A character is a digit if its general category type, provided by getType(codePoint), is DECIMAL_DIGIT_NUMBER.
Some Unicode character ranges that contain digits:
‘u0030’ through ‘u0039’, ISO-LATIN-1 digits (‘0’ through ‘9’)
‘u0660’ through ‘u0669’, Arabic-Indic digits
‘u06F0’ through ‘u06F9’, Extended Arabic-Indic digits
‘u0966’ through ‘u096F’, Devanagari digits
‘uFF10’ through ‘uFF19’, Fullwidth digits
Many other character ranges contain digits as well.
The isDigit(int codePoint) method of Character class is static thus it should be accessed statically which means the we would be calling this method in this format:
Non static method is usually called by just declaring method_name(argument) however in this case since the method is static, it should be called by appending the class name as suffix. We will be encountering a compilation problem if we call the java isDigit() method non statically.
public static boolean isDigit(int codePoint)
the character (Unicode code point) to be tested.
The isDigit(int codePoint) method of Character class returns true if the character is a digit; false otherwise.
Requires Java 1.5 and up
Java Character isDigit(int codePoint) Example
Below is a simple java example on the usage of isDigit(int codePoint) method of Character class.
A Java Example on using isDigit(int codePoint) method