字符类 [a-z&&[def]] 匹配
描述
字符类 [a-z&&[def]] 匹配 d,e 或 f。
示例
下面的例子展示了字符类匹配的用法。
package com.tutorialspoint;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class CharacterClassDemo {
private static final String REGEX = "[a-z&&[def]]";
private static final String INPUT = "dbcabca124ADCmnbc";
public static void main(String[] args) {
// create a pattern
Pattern pattern = Pattern.compile(REGEX);
// get a matcher object
Matcher matcher = pattern.matcher(INPUT);
while(matcher.find()) {
//Prints the start index of the match.
System.out.println("Match String start(): "+matcher.start());
}
}
}
让我们编译并运行上面的程序，这将产生以下结果 −
Match String start(): 0
