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

java.lang.Character.isHighSurrogate()是java中的内置方法，它确定给定的char值是否为Unicode high-surrogate代码单元(也称为leading-surrogate代码单元)。这样的值本身并不表示字符，而是用于UTF-16编码中的补充字符。

用法:

public static boolean isHighSurrogate(char ch)

参数：该函数接受单个强制参数ch，该参数指定要测试的值。

返回值：该函数返回一个布尔值。如果char值介于MIN_HIGH_SURROGATE和MAX_HIGH_SURROGATE(含)之间，则返回的值为True，否则为False。

以下示例程序旨在说明Character.isHighSurrogate()方法：

示例1:

// Java program to illustrate the 
// Character.isHighSurrogate() method 
import java.lang.*; 
  
public class gfg { 
  
    public static void main(String[] args) 
    { 
  
        // create 2 char primitives c1, c2 
        char c1 = '\u0a4f', c2 = '\ud8b4'; 
  
        // assign isHighSurrogate results of 
        // c1, c2 to boolean primitives bool1, bool2 
        boolean bool1 = Character.isHighSurrogate(c1); 
        System.out.println("c1 is a Unicode"+ 
        "high-surrogate code unit ? " + bool1); 
  
        boolean bool2 = Character.isHighSurrogate(c2); 
        System.out.println("c2 is a Unicode"+  
        "high-surrogate code unit ? " + bool2); 
    } 
}

输出：

c1 is a Unicodehigh-surrogate code unit ? false
c2 is a Unicodehigh-surrogate code unit ? true

示例2:

// Java program to illustrate the 
// Character.isHighSurrogate() method 
import java.lang.*; 
  
public class gfg { 
  
    public static void main(String[] args) 
    { 
  
        // create 2 char primitives c1, c2 
        char c1 = '\u0b9f', c2 = '\ud5d5'; 
  
        // assign isHighSurrogate results of 
        // c1, c2 to boolean primitives bool1, bool2 
        boolean bool1 = Character.isHighSurrogate(c1); 
        System.out.println("c1 is a Unicode" +  
        "high-surrogate code unit ? " + bool1); 
  
        boolean bool2 = Character.isHighSurrogate(c2); 
        System.out.println("c2 is a Unicode" +  
        "high-surrogate code unit ? " + bool2); 
    } 
}

输出：

c1 is a Unicodehigh-surrogate code unit ? false
c2 is a Unicodehigh-surrogate code unit ? false

相关用法

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.isHighSurrogate() 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。