Java中的字符.isSupplementaryCodePoint() 方法

Java.lang。 字符.isSupplementaryCodePoint(int codePoint)是Java中的一个内置方法，用于判断指定字符（Unicode码点）是否在补充字符范围内。

句法：

public static boolean isSupplementaryCodePoint(int codePoint)

参数：整数类型的codePoint是指要测试的字符（Unicode码位）。

返回值：如果指定的代码点介于 MIN_SUPPLEMENTARY_CODE_POINT 和 MAX_CODE_POINT 之间，则此方法返回 true，否则返回 false。

下面的程序说明了字符.isSupplementaryCodePoint() 方法：

方案一：

// Code to illustrate the isSupplementaryCodePoint() method
import java.lang.*;
  
public class gfg {
  
    public static void main(String[] args)
    {
  
        // Create 2 int primitives c1, c2 and assign values
        int c1 = 0x10ffd, c2 = 0x154ca;
  
        boolean bool1 = Character.isSupplementaryCodePoint(c1);
        boolean bool2 = Character.isSupplementaryCodePoint(c2);
  
        String str1 = "c1 represents a supplementary code point is " + bool1;
        String str2 = "c2 represents a supplementary code point is " + bool2;
  
        // Displaying the result
        System.out.println(str1);
        System.out.println(str2);
    }
}

输出：

c1 represents a supplementary code point is true
c2 represents a supplementary code point is true

方案二：

// Code to illustrate the isSupplementaryCodePoint() method
import java.lang.*;
  
public class gfg {
  
    public static void main(String[] args)
    {
  
        // Creates 2 int primitives c1, c2 and assign values
        int c1 = 0x45ffd, c2 = 0x004ca;
  
        boolean bool1 = Character.isSupplementaryCodePoint(c1);
        boolean bool2 = Character.isSupplementaryCodePoint(c2);
  
        String str1 = "c1 represents a supplementary code point is " + bool1;
        String str2 = "c2 represents a supplementary code point is " + bool2;
         
        // Displaying the result
        System.out.println(str1);
        System.out.println(str2);
    }
}

输出：

c1 represents a supplementary code point is true
c2 represents a supplementary code point is false

参考：https: Java/lang/ 字符.html#isSupplementaryCodePoint(int)