import com.google.common.base.Charsets;
import com.google.common.hash.Hashing;
import java.text.MessageFormat;
import com.google.common.collect.FluentIterable;
 
import java.util.Arrays;
import java.util.List;
import java.util.Iterator;
/**
 * Use this class to change the password stored in the databae from one that is
 * visible as plain text (a security threat) to one that is "hashed". Hashing is
 * a one-way encryption system. Hashes can be generated but cannot be reverse
 * engineered, which is why they are called one-way hashes. Use this class to
 * generate a hashed password, based on the original plain text version, using
 * SHA-256, which is a superior hashing algorithm. Then copy the output from the
 * console and use it to replace what you have in your database.
 *
 * @author jlombardo
 */
public class Main {
 
    public static void main(String[] args) {
        List<String> strings = Arrays.asList("hello", "world", "apple", "banana", "cat");
 
        Iterator testIterator = FluentIterable.from(strings)
                .transformAndConcat(word -> {
                    if (word.contains("a")) {
                        return Arrays.asList(word);
                    } else {
                        return Arrays.asList();
                    }
                }).iterator();
 
        while( testIterator.hasNext()) {
        	System.out.println("List length " + testIterator.next());
        }
    }
}

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