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Why we should use whole string in Java regular expression
In Java regex matches() matches the input string against the whole string as it add a ^ and $ at the end of the input string.so it will not match the substring. So for matching substring, you should use find().
Example
import java.util.regex.*;
class PatternMatchingExample {
public static void main(String args[]) {
String content = "aabbcc";
String string = "aa";
Pattern p = Pattern.compile(string);
Matcher m = p.matcher(content);
System.out.println(" 'aa' Match:"+ m.matches());
System.out.println(" 'aa' Match:"+ m.find());
}
}Output
'aa' Match:false 'aa' Match:true
Updated on: 21-Jun-2020
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