java decode base64

/**
 * @author lautturi.com
 * Java example: how to decrypt base64 string in java
 */
import java.util.*;

public class Lautturi {

	public static void main(String[] args) {
		
		String b64 = "bGF1dHR1cmk=";
	    byte[] decoder = Base64.getDecoder().decode(b64);
	    String str = new String(decoder);
	    System.out.println(str); //  "lautturi"
        
	}
}

output:

lautturi