HashMap para j2me

package j2meuteis;

public class HashMap {

//crie a classe ArrayList para J2ME tambem postada no blog
private ArrayList keys;
private ArrayList values;

public HashMap() {
keys = new ArrayList();
values = new ArrayList();
}

public void put(Object key, Object value) {
getKeys().add(key);
getValues().add(value);
}

public Object get(Object key) {
for (int i = 0; i < getKeys().size(); i++) {
if (key == getKeys().get(i)) {
return getValues().get(i);
}
}
return null;
}

public ArrayList getKeys() {
return keys;
}

public ArrayList getValues() {
return values;
}

public int size() {
return getKeys().size();
}
}