Java tutorial
/* * Copyright 2000-2011 Enonic AS * http://www.enonic.com/license */ package com.enonic.cms.domain.security.userstore; import java.io.Serializable; import org.apache.commons.lang.builder.HashCodeBuilder; import com.enonic.cms.domain.AbstractIntegerBasedKey; public class UserStoreKey extends AbstractIntegerBasedKey implements Serializable { public UserStoreKey(String key) { if (key.startsWith("#")) { key = key.substring(1); } init(key); } public UserStoreKey(int key) { init(key); } public UserStoreKey(Integer key) { init(key); } public boolean equals(Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } UserStoreKey other = (UserStoreKey) o; return intValue == other.intValue; } public int hashCode() { final int initialNonZeroOddNumber = 551; final int multiplierNonZeroOddNumber = 831; return new HashCodeBuilder(initialNonZeroOddNumber, multiplierNonZeroOddNumber).append(intValue) .toHashCode(); } public static UserStoreKey parse(String key) { if (key == null) { return null; } else { return new UserStoreKey(key); } } }