Get regular expression from which this pattern was compiled

public String pattern()

Returns the regular expression from which this pattern was compiled.

import java.util.regex.*;

public class PatternMatch {
    public static void main(String args[]){     
        Pattern p = Pattern.compile("a*b");
        
        System.out.println("Pattern used is " + p.pattern());
    }
}

Output

Pattern used is a*b

 

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