Constants public class Constants { // define two class-level constants with static final private static final int MAX_VALUE = 100; private static final String LOCAL_URL = "http://localhost:8080/"; public static void main( String[] args ) { // define MY_PIE as a local constant final double MY_PIE = 3.14; System.out.println( Constants.MAX_VALUE ); System.out.println( Constants.LOCAL_URL ); System.out.println( MY_PIE ); // MY_PIE = 3.15 result in an error, because MY_PIE is a constant } public static void execute( final int min, final int max ) { // min and max cannot be altered within this method } }