Case10Log.java

package org.zdevra.guice.mvc.case10;

import java.util.LinkedList;
import java.util.List;

public class Case10Log {

    private static Case10Log instance;
    private List<String> messages;

    public static Case10Log getInstance() {
        if (instance == null) {
            instance = new Case10Log();
            instance.reset();
        }
        return instance;
    }

    public void reset() {
        this.messages = new LinkedList<String>();
    }

    public void log(String msg) {
        System.out.println(msg);
        this.messages.add(msg);
    }

    public List<String> getMessages() {
        return messages;
    }

    public int contains(String text) {
        int occurence = 0;
        for (String m : messages) {
            if (m.contains(text)) {
                occurence++;
            }
        }
        return occurence;
    }
}