Java Character.getDirectionality()用法及代码示例

java.lang.Character.getDirectionality()是Java中的内置方法，该方法返回给定字符的Unicode方向性属性。字符方向性用于计算文本的视觉顺序。未定义char值的方向性值为DIRECTIONALITY_UNDEFINED。此方法不能处理补充字符。为了支持包括补充字符在内的所有Unicode字符，请在此方法的参数中传递一个整数。

用法:

public static byte getDirectionality(char ch)

参数：该函数接受一个必填参数ch。此参数指定为其请求方向性属性的char。该参数可以是int或char数据类型。

返回值：该函数返回表示char值的方向性属性的字节。

以下示例程序旨在说明上述方法：

示例1:

// Java program to demonstrate the 
// Character.getDirectionality() method 
// when the passed parameter is an integer 
import java.lang.*; 
  
public class gfg { 
  
    public static void main(String[] args) 
    { 
        // create 2 int primitives ch1 and 
        // ch2 and assign values to them 
        int ch1=0x2424, ch2=0x2c61; 
  
        // assign directionality of ch1, ch2 to bp1, bp2 
        byte b1 = Character.getDirectionality(ch1); 
        byte b2 = Character.getDirectionality(ch2); 
  
        System.out.println("Directionality of first primitive is " + b1); 
        System.out.println("Directionality of first primitive is " + b2); 
    } 
}

输出：

Directionality of first primitive is 13
Directionality of first primitive is 0

示例2:

// Java program to demonstrate the 
// Character.getDirectionality() method 
// when the passed parameter is a character 
import java.lang.*; 
  
public class gfg { 
  
    public static void main(String[] args) 
    { 
        // create 2 int primitives ch1 and 
        // ch2 and assign values to them 
        char ch1 = 'M', ch2 = '\u06ff'; 
  
        // assign directionality of ch1, ch2 to bp1, bp2 
        byte b1 = Character.getDirectionality(ch1); 
        byte b2 = Character.getDirectionality(ch2); 
  
        System.out.println("Directionality of first primitive is " + b1); 
        System.out.println("Directionality of first primitive is " + b2); 
    } 
}

输出：

Directionality of first primitive is 0
Directionality of first primitive is 2

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

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注：本文由纯净天空筛选整理自Twinkl Bajaj大神的英文原创作品 Character.getDirectionality() method in Java with examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。