import java.util.regex.*; public class PatternCount { public static void main(String[] args) { String s = "#!123#!4567#!8910"; Pattern p = Pattern.compile("#!");
Matcher m = p.matcher(s); int count = 0; for( int i = 0; m.find(i); i = m.end()) count++;
System.out.println(count); //특정문자열(Pattern)의 갯수 } };
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