VOOZH about

URL: https://www.geeksforgeeks.org/java/character-isjavaidentifierpart-method-in-java-with-examples/

⇱ Character.isJavaIdentifierPart() Method in Java with Examples - GeeksforGeeks

  • Courses
  • Tutorials
  • Interview Prep

Character.isJavaIdentifierPart() Method in Java with Examples

Last Updated : 6 Dec, 2018
  1. The Character.isJavaIdentifierPart(int codePoint) is an inbuilt method in java that determines if the specified character may be part of a Java identifier as other than the first character. A character may be a part of Java identifier if any of the following are true:
    • it is a letter
    • it is a currency symbol (such as ‘$’)
    • it is a connecting punctuation character (such as ‘_’)
    • it is a digit
    • it is a numeric letter (such as a Roman numeral character)
    • it is a combining mark
    • it is a non-spacing mark
    • isIdentifierIgnorable returns true for the character.
    Syntax: 
    public static boolean isJavaIdentifierPart(int codePoint)
    Parameters: The parameter codePoint of Integer datatype refers to the character (Unicode code point) that is to be tested. Return Value: The isJavaIdentifierPart(int codepoint) method of Character class returns true if the character may be part of a Java identifier; false otherwise. Below programs are used to illustrate the Character.isJavaIdentifierPart(int codepoint) method: Program 1:
    Output: 
    c1 may be part of a Java identifier is true
c2 may be part of a Java identifier is true
    Program 2:
    Output: 
    c1 may be part of a Java identifier is true
c2 may be part of a Java identifier is true
  2. The Character.isJavaIdentifierPart(char ch) is similar to the previous method in all manner but cannot handle supplementary characters. To support all Unicode characters, including supplementary characters, use the previous method. Syntax: 
    public static boolean isJavaIdentifierPart(char ch)
    Parameters:The parameter ch is of character datatype and refers to the character that is to be tested. Return Value: The isJavaIdentifierPart(char ch) method of Character class returns true if the character may be part of a Java identifier; false otherwise. Below programs are used to illustrate the use Character.isJavaIdentifierPart(char ch) method: Program 1:
    Output: 
    5 may be part of a Java identifier is true
% may be part of a Java identifier is false
    Program 2:
Output: 
6 may be part of a Java identifier is true
* may be part of a Java identifier is false
Reference: https://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#isUnicodeIdentifierPart(int)
Comment