java.lang.Character.isSupplementaryCodePoint()方法範例

java.lang.Character.isSupplementaryCodePoint(int codePoint) 確定指定字元(Unicode程式碼點)是否在補充字元範圍。

宣告

以下是java.lang.Character.isSupplementaryCodePoint()方法的宣告

public static boolean isSupplementaryCodePoint(int codePoint)

引數

• codePoint - 進行測試的字元(Unicode程式碼點)

返回值

如果指定的程式碼點是在MIN_SUPPLEMENTARY_CODE_POINT和MAX_CODE_POINT(含)之間此方法返回true，否則返回false。

異常

• NA

例子

下面的例子顯示lang.Character.isSupplementaryCodePoint()方法的使用。

package com.yiibai;

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 );
   }
}

讓我們來編譯和執行上面的程式，這將產生以下結果：

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