CS1 Standard Demo Page

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package arraylistplay;

import java.util.ArrayList;

/**
 *
 * @author ecuevas
 */
public class Primes {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        ArrayListprimes = new ArrayList<>();
        
        primes.add(2);
        primes.add(3);
        primes.add(5);
        primes.add(7);
        
        System.out.println("size of primes list = " + primes.size());
        System.out.println("first prime = " + primes.get(0));
        System.out.println("last prime = " + primes.get(3));
        System.out.println("last prime = " + primes.get(primes.size()-1));
        
        System.out.println("\nThe intital list ...");
        for (Integer prime : primes) {
            System.out.println(prime);
        }
        
        int temp = primes.get(0);
        primes.set(0, primes.get(primes.size()-1));
        primes.set(primes.size()-1,temp);
        
        System.out.println("\nThe final list ...");
        for (Integer prime : primes) {
            System.out.println(prime);
        }

    }
    
}