/*
* Copyright 2012-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package demo.service;
import org.springframework.util.Assert;
public final class VehicleIdentificationNumber {
private String vin;
public VehicleIdentificationNumber(String vin) {
Assert.notNull(vin, "VIN must not be null");
Assert.isTrue(vin.length() == 17, "VIN must be exactly 17 characters");
this.vin = vin;
}
@Override
public int hashCode() {
return this.vin.hashCode();
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj == null || obj.getClass() != getClass()) {
return false;
}
return this.vin.equals(((VehicleIdentificationNumber) obj).vin);
}
@Override
public String toString() {
return this.vin;
}
}