Java Character isBmpCodePoint()用法及代码示例

Character类的isBmpCodePoint(int codePoint()方法一般判断给定(或指定)的Unicode字符是否在Basic Multilingual Plane(BMP)的范围内，这些指定的codePoints可以通过单个char值来表示。

用法

public static Boolean isBmpCodePoint(int codePoint)

参数

上述方法只需要一个参数：

a.)codePoint 是需要测试的 Unicode 字符。

返回值

Character 类的 isBmpCodePoint(int codePoint) 方法返回布尔值，即 true，如果指定的 codePoint 位于 MIN_VALUE 和 MAX_VALUE 的值之间。否则，它返回 false。

例子1

public class JavaCharcterisBmpCodePointExample1 {
public static void main(String[] args) {     	
	char cp1 = ' ';
	char cp2 = 'A';
	char cp3 = 'B';
	char cp4 = 'a';
	char cp5 = 'b';
    boolean b1 = Character.isBmpCodePoint(cp1);
    boolean b2 = Character.isBmpCodePoint(cp2);
    boolean b3 = Character.isBmpCodePoint(cp3);
    boolean b4 = Character.isBmpCodePoint(cp4);
    boolean b5 = Character.isBmpCodePoint(cp5);
    System.err.println("The value for the first char comes to be: "+b1);
    System.err.println("The value for the second char comes to be:"+b2);
    System.err.println("The value for the third char comes to be: "+b3);
    System.err.println("The value for the fourth char comes to be:"+b4);
    System.err.println("The value for the fifth char comes to be: "
    +b5);
  }
}

输出：

The value for the first char comes to be: true
The value for the second char comes to be:true
The value for the third char comes to be: true
The value for the fourth char comes to be:true
The value for the fifth char comes to be: true

例子2

public class JavaCharcterisBmpCodePointExample2 {
public static void main(String[] args) {	
   // Initialize the codePoints.
         int codepoint1 = 12;
	  int codepoint2 = 121;
	  int codepoint3 = 684748;	
  // Check the codepoints whether they are in Basic Multilingual Plane (BMP).
	  boolean result1 = Character.isBmpCodePoint(codepoint1);
	  boolean result2 = Character.isBmpCodePoint(codepoint2);
	  boolean result3 = Character.isBmpCodePoint(codepoint3);
 // Finally print the result.
System.out.println("The boolean value for the first codePoint is given as: "+result1);
System.out.println("The boolean value for the second codePoint is given as: "+result2);	
System.out.println("The boolean value for the third codePoint is given as: "+result3);	
	}
}

输出：

The boolean value for the first codePoint is given as: true
The boolean value for the second codePoint is given as: true
The boolean value for the third codePoint is given as: false

例子3

public class JavaCharcterisBmpCodePointExample3 {
public static void main(String[] args) {     	
	char cp1 = '1';
	char cp2 = '2';
	char cp3 = '3';
	char cp4 = '4';
	char cp5 = '5';
    boolean b1 = Character.isBmpCodePoint(cp1);
    boolean b2 = Character.isBmpCodePoint(cp2);
    boolean b3 = Character.isBmpCodePoint(cp3);
    boolean b4 = Character.isBmpCodePoint(cp4);
    boolean b5 = Character.isBmpCodePoint(cp5);
    System.err.println("The value for the first char comes to be: "+b1);
    System.err.println("The value for the second char comes to be:"+b2);
    System.err.println("The value for the third char comes to be: "+b3);
    System.err.println("The value for the fourth char comes to be:"+b4);
    System.err.println("The value for the fifth char comes to be: "+b5);
  }
}

输出：

The value for the first char comes to be: true
The value for the second char comes to be:true
The value for the third char comes to be: true
The value for the fourth char comes to be:true
The value for the fifth char comes to be: true

相关用法

注：本文由纯净天空筛选整理自 Java Character isBmpCodePoint() Method。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。