Java Character.isUnicodeIdentifierPart()用法及代碼示例

java.lang.Character.isUnicodeIdentifierPart()是java中的一個內置方法，該方法確定指定字符是否可能是第一個字符以外的Unicode標識符的一部分。

當且僅當以下陳述之一為真時，字符才可能是Unicode標識符的一部分：

它是連接的標點符號(例如“ _”)
這是一個數字
這是一封信
這是一個組合標記
isIdentifierIgnorable為此字符返回true。
它是一個數字字母(例如羅馬數字字符)
這是一個非間距標記

用法:

public static boolean isUnicodeIdentifierPart(datatype character)

參數：該函數接受一個強製性參數字符。此參數可以是int或char數據類型。它指定要測試的字符。

返回值：如果字符可能是Unicode標識符的一部分，則此方法返回true，否則返回false。

以下程序說明了java.lang.Character.isUnicodeIdentifierPart()方法：
示例1:當傳遞的參數是字符時。

// 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); 
    } 
}

輸出：

Is - a part of Unicode Identifier: false
 Is 7 a part of Unicode Identifier: true
 Is g a part of Unicode Identifier: true

示例2:當傳遞的參數是字符時。

// 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); 
    } 
}

輸出：

~ may be part of a Unicode identifier is false
8 may be part of a Unicode identifier is true

以下示例程序旨在說明Character.isUnicodeIdentifierPart(int codePoint)方法：

示例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); 
    } 
}

輸出：

c1 may be part of a Unicode identifier is true
c2 may be part of a Unicode identifier is true

示例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); 
    } 
}

輸出：

c1 may be part of a Unicode identifier is true
c2 may be part of a Unicode identifier is true

參考： https://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#isUnicodeIdentifierPart(char)

相關用法

注：本文由純淨天空篩選整理自Twinkl Bajaj大神的英文原創作品 Character.isUnicodeIdentifierPart() Method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。