- Java.lang Package classes
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Java.lang.Character.isDigit() Method
Description
The java.lang.Character.isDigit(int codePoint) 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.
Declaration
Following is the declaration for java.lang.Character.isDigit() method
public static boolean isDigit(int codePoint)
Parameters
codePoint − the character (Unicode code point) to be tested
Return Value
This method returns true if the character is a digit, false otherwise.
Exception
NA
Example
The following example shows the usage of lang.Character.isDigit() method.
package com.tutorialspoint; import java.lang.*; public class CharacterDemo { public static void main(String[] args) { // create 2 int primitives cp1, cp2 int cp1, cp2; // assign values to cp1, cp2 cp1 = 0x06f8; cp2 = 0x0c12; // create 2 boolean primitives b1, b2 boolean b1, b2; // assign isDigit results of ch1, ch2 to i1, i2 b1 = Character.isDigit(cp1); b2 = Character.isDigit(cp2); String str1 = "cp1 represents a digit is " + b1; String str2 = "cp2 represents a digit is " + b2; // print b1, b2 values System.out.println( str1 ); System.out.println( str2 ); } }
Let us compile and run the above program, this will produce the following result −
cp1 represents a digit is true cp2 represents a digit is false
java_lang_character.htm
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