The java.lang.Character.isUnicodeIdentifierPart() is an inbuilt method in java that determines if the specified character may be part of a Unicode identifier as other than the first character.
A character may be part of a Unicode identifier if and only if one of the following statements is true:
- it is a connecting punctuation character (such as ‘_’)
- it is a digit
- it is a letter
- it is a combining mark
- isIdentifierIgnorable returns true for this character.
- it is a numeric letter (such as a Roman numeral character)
- it is a non-spacing mark
Syntax:
public static boolean isUnicodeIdentifierPart(datatype character)
Parameter: The function accepts one mandatory parameter character. This parameter can be of datatype int or char. It specifies the character to be tested.
Return Value: This method returns true if the character may be part of a Unicode identifier, otherwise false.
Below programs illustrate the java.lang.Character.isUnicodeIdentifierPart() method:
Program 1: When the passed parameter is a Character.
// Code to illustrate the Character.isUnicodeIdentifierPart() import java.lang.*; public class gfg { public static void main(String[] args) { // Creating character primitives char char1 = '-'; char char2 = '7'; char char3 = 'g'; boolean bool1 = Character.isUnicodeIdentifierPart(char1); boolean bool2 = Character.isUnicodeIdentifierPart(char2); boolean bool3 = Character.isUnicodeIdentifierPart(char3); String str1 = " Is " + char1 + " a part of Unicode Identifier: " + bool1; String str2 = " Is " + char2 + " a part of Unicode Identifier: " + bool2; String str3 = " Is " + char3 + " a part of Unicode Identifier: " + bool3; // Displaying the strings System.out.println(str1); System.out.println(str2); System.out.println(str3); }} |
Is - a part of Unicode Identifier: false Is 7 a part of Unicode Identifier: true Is g a part of Unicode Identifier: true
Program 2: When the passed parameter is a Character.
// Code to illustrate the Character.isUnicodeIdentifierPart() import java.lang.*; public class gfg { public static void main(String[] args) { // Create 2 char primitives c1, c2 char c1 = '~', c2 = '8'; boolean bool1 = Character.isUnicodeIdentifierPart(c1); boolean bool2 = Character.isUnicodeIdentifierPart(c2); String str1 = c1 + " may be part of a Unicode identifier is " + bool1; String str2 = c2 + " may be part of a Unicode identifier is " + bool2; System.out.println(str1); System.out.println(str2); }} |
~ may be part of a Unicode identifier is false 8 may be part of a Unicode identifier is true
Below programs illustrate the Character.isUnicodeIdentifierPart(int codePoint) method:
Program 1:
// Code to illustrate the Character.isUnicodeIdentifierPart(int codePoint)import java.lang.*; public class gfg { public static void main(String[] args) { // Create 2 int primitives c1, c2 int c1 = 0x053d, c2 = 0x7840; boolean bool1 = Character.isUnicodeIdentifierPart(c1); boolean bool2 = Character.isUnicodeIdentifierPart(c2); String str1 = "c1 may be part of a Unicode identifier is " + bool1; String str2 = "c2 may be part of a Unicode identifier is " + bool2; // Displaying the strings System.out.println(str1); System.out.println(str2); }} |
c1 may be part of a Unicode identifier is true c2 may be part of a Unicode identifier is true
Program 2:
// Code to illustrate the Character.isUnicodeIdentifierPart(int codePoint)import java.lang.*; public class gfg { public static void main(String[] args) { // Creating 2 int primitives c1, c2 int c1 = 0x065d, c2 = 0x7885; boolean bool1 = Character.isUnicodeIdentifierPart(c1); boolean bool2 = Character.isUnicodeIdentifierPart(c2); String str1 = "c1 may be part of a Unicode identifier is " + bool1; String str2 = "c2 may be part of a Unicode identifier is " + bool2; // Displaying the strings System.out.println(str1); System.out.println(str2); }} |
c1 may be part of a Unicode identifier is true c2 may be part of a Unicode identifier is true
Reference: https://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#isUnicodeIdentifierPart(char)
