Java Character isAlphabetic()用法及代码示例

您所在的位置：网站首页 › java isletter方法 › Java Character isAlphabetic()用法及代码示例

Java Character isAlphabetic()用法及代码示例

2023-12-27 09:22| 来源: 网络整理| 查看: 265

Character 类的 isAlphabetic(intcodePoint) 方法确定指定字符是否为字母表。

如果字符具有以下特征，则将其视为字母表：

大写_字母 LOWERCASE_LETTER TITLECASE_LETTER MODIFIER_LETTER OTHER_LETTER LETTER_NUMBER 或 Unicode 标准定义的其他字母表。用法 public static Boolean isAlphabetic(int codePoint) 参数

codePoint: 这是要测试的字符。

返回值

如果字符是 Unicode 字母字符，则 isAlphabetic(intcodePoint) 方法返回 true。否则，此方法返回 false。

例子1 public class JavaCharacterisAlphabeticExample1 { public static void main(String[] args) { char codepoint1 = '0'; char codepoint2 = '1'; boolean b1 = Character.isAlphabetic(codepoint1); boolean b2 = Character.isAlphabetic(codepoint2); System.out.println("The returned value for the first character is given as:"+" "+b1); System.out.println("The returned value for the first character is given as:"+" "+b2); } }

输出：

The returned value for the first character is given as: false The returned value for the first character is given as: false 例子2 public class JavaCharacterisAlphabeticExample2 { public static void main(String[] args) { // Initialize the codepoints int codepoint1 = 87; int codepoint2 = 49; int codepoint3 = 63; // Check if the first codepoint is alphabet or not. boolean checkAlp1 = Character.isAlphabetic(codepoint1); if(checkAlp1){ System.err.print("Codepoint \'"+codepoint1+"\' is an alphabet.\n"); } else{ System.out.print("Codepoint \'"+codepoint1+"\' is not an alphabet.\n"); } // Check if the second codepoint is alphabet or not. boolean checkAlp2 = Character.isAlphabetic(codepoint2); if(checkAlp2){ System.err.print("Codepoint \'"+codepoint2+"\' is an alphabet.\n"); } else{ System.out.print("Codepoint \'"+codepoint2+"\' is not an alphabet.\n"); } // Check if the third codepoint is alphabet or not. boolean checkAlp3 = Character.isAlphabetic(codepoint3); if(checkAlp3){ System.err.print("Codepoint \'"+codepoint3+"\' is an alphabet.\n"); } else{ System.out.print("Codepoint \'"+codepoint3+"\' is not an alphabet.\n"); } } }

输出：

Codepoint '87' is an alphabet. Codepoint '49' is not an alphabet. Codepoint '63' is not an alphabet. 例子3 public class JavaCharacterisAlphabeticExample3 { public static void main(String[] args) { char codepoint1 = '1'; char codepoint2 = 'A'; char codepoint3 ='B'; boolean b1 = Character.isAlphabetic(codepoint1); boolean b2 = Character.isAlphabetic(codepoint2); boolean b3 = Character.isAlphabetic(codepoint3); System.out.println("The returned value for the first character is given as:"+" "+b1); System.out.println("The returned value for the second character is given as:"+" "+b2); System.out.println("The returned value for the third character is given as:"+" "+b3); } }

输出：

The returned value for the first character is given as: false The returned value for the second character is given as: true The returned value for the third character is given as: true

【本文地址】

Java Character isAlphabetic()用法及代码示例

Java Character isAlphabetic()用法及代码示例

今日新闻

推荐新闻