Java Character isSupplementaryCodePoint()方法

java.lang.Character.isSupplementaryCodePoint(int codePoint) 确定指定字符(Unicode代码点)是否在补充字符范围。

1 语法

public static boolean isSupplementaryCodePoint(int codePoint)

2 参数

codePoint：进行测试的字符(Unicode代码点)

3 返回值

如果指定的代码点是在MIN_SUPPLEMENTARY_CODE_POINT和MAX_CODE_POINT(含)之间此方法返回true，否则返回false。

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * Java Character isSupplementaryCodePoint()方法
 */
import java.lang.*;

public class CharacterDemo {

   public static void main(String[] args) {

      // create 2 int primitives cp1, cp2
      int cp1, cp2;

      // assign values to cp1, cp2
      cp1 = 0x10ffd;
      cp2 = 0x004ca;

      // create 2 boolean primitives b1, b2
      boolean b1, b2;

      /**
       *  check if cp1, cp2 are in supplementary character range
       *  and assign results to b1, b2
       */
      b1 = Character.isSupplementaryCodePoint(cp1);
      b2 = Character.isSupplementaryCodePoint(cp2);

      String str1 = "cp1 represents a supplementary code point is " + b1;
      String str2 = "cp2 represents a supplementary code point is " + b2;

      // print b1, b2 values
      System.out.println( str1 );
      System.out.println( str2 );
   }
}

输出结果为：

cp1 represents a supplementary code point is true
cp2 represents a supplementary code point is false