在 Java 中,Pattern CANON_EQ 字段和示例
Pattern 类的 CANON_EQ 字段仅在字符规范相等时匹配两个字符。当将此用作 compile() 方法的标志值时,当且仅当两个字符的完整规范分解相等时,它们才会匹配。
规范分解是 Unicode 文本规范形式之一。
示例 1
import java.util.regex.Matcher; import java.util.regex.Pattern; public class CANON_EQ_Example { public static void main( String args[] ) { String regex = "b\u0307"; //Compiling the regular expression Pattern pattern = Pattern.compile(regex, Pattern.CANON_EQ); //Retrieving the matcher object Matcher matcher = pattern.matcher("\u1E03"); if(matcher.matches()) { System.out.println("Match found"); } else { System.out.println("Match not found"); } } }
输出
Match found
示例 2
import java.util.regex.Matcher; import java.util.regex.Pattern; public class CANON_EQ_Example { public static void main( String args[] ) { String regex = "a\u030A"; //Compiling the regular expression Pattern pattern = Pattern.compile(regex, Pattern.CANON_EQ); //Retrieving the matcher object String [] input = {"\u00E5", "a\u0311", "a\u0325", "a\u030A", "a\u1E03", "a\uFB03" }; for (String ele : input) { Matcher matcher = pattern.matcher(ele); if(matcher.matches()) { System.out.println(ele+" is a match for "+regex); } else { System.out.println(ele+" is not a match for "+regex); } } } }
输出
? is a match for a? a? is not a match for a? a? is not a match for a? a? is a match for a? a? is not a match for a? a? is not a match for a?
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