2 * copyright(c) 2005 kuwata-lab all rights reserved.
7 import java.io.Serializable;
8 import java.util.HashMap;
11 * hash map which can have default value
13 public class DefaultableHashMap extends HashMap implements Defaultable {
15 private static final long serialVersionUID = -5224819562023897380L;
17 private Object defaultValue = null;
19 public DefaultableHashMap() {
23 public Object getDefault() { return defaultValue; }
25 public void setDefault(Object value) { defaultValue = value; }
28 public Object get(Object key) {
29 return containsKey(key) ? super.get(key) : defaultValue;