Question

How to find all the strings in String array that start with specific letter using regex Pattern.matches() in Java

Answer 1

package javaapplication1;

import java.util.regex.Pattern;

public class JavaApplication1 {

    public static void main(String[] args) {

        try {

            String[] arr = {"java", "c", "jazz", "c++", "janis", "c#", "joplin"};

            for (String s : arr) {
                // start with 'j' and .+ one or more characters
                boolean b = Pattern.matches("j.+", s); 
                if (b)
                    System.out.println(s);
            }

        } catch (Exception e) {
            System.out.print(e.toString());
        }
    }
}

/*
             
run:
       
java
jazz
janis
joplin
    
 */

 

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