How to find Regular Expressions in a Hash Map

Question

Hi,
I Have a hash map with some keys. The Keys are like this(Java.util.regex, Javax.swing.table, javax.swing.text, Java.util.jar, Java.text etc). Suppose if the user gives the search pattern as "text", the o/p should be javax.swing.text and java.text.. How to do it using regular Expressions

Answer 1

// Sample code...
import java.util.regex.*;
public class TestRegex {
    public static void main(String[] args) {
        String test1 = "java.util.regex";
        String test2 = "javax.swing.text";
        String test3 = "java.util.jar";
        String test4 = "java.text";
        Pattern pat = Pattern.compile(".*text.*");
        Matcher mt1 = pat.matcher(test1);
        System.out.println("1> " +mt1.matches());
        Matcher mt2 = pat.matcher(test2);
        System.out.println("2> " +mt2.matches());
        Matcher mt3 = pat.matcher(test3);
        System.out.println("3> " +mt3.matches());
        Matcher mt4 = pat.matcher(test4);
        System.out.println("4> " +mt4.matches());
}