/*
* ========================================================================
*
* Copyright 2005 Tim O'Brien.
*
* 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.
*
* ========================================================================
*/
import java.math.BigDecimal;
import java.util.HashSet;
import java.util.Set;
import org.apache.commons.lang.builder.CompareToBuilder;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
class TaxReturn {
private String ssn;
private int year;
private String lastName;
private BigDecimal taxableIncome;
public TaxReturn() {
}
public TaxReturn(String pSsn, int pYear, String pLastName, BigDecimal pTaxableIncome) {
setSsn(pSsn);
setYear(pYear);
setLastName(pLastName);
setTaxableIncome(pTaxableIncome);
}
public String getSsn() {
return ssn;
}
public void setSsn(String pSsn) {
ssn = pSsn;
}
public int getYear() {
return year;
}
public void setYear(int pYear) {
year = pYear;
}
public String getLastName() {
return lastName;
}
public void setLastName(String pLastName) {
lastName = pLastName;
}
public BigDecimal getTaxableIncome() {
return taxableIncome;
}
public void setTaxableIncome(BigDecimal pTaxableIncome) {
taxableIncome = pTaxableIncome;
}
public String toString() {
return new ToStringBuilder(this).append("ssn", ssn).append("year", year).append("lastName",
lastName).toString();
}
public int hashCode() {
return new HashCodeBuilder(3, 7).append(ssn).append(year).toHashCode();
}
public boolean equals(Object pObject) {
boolean equals = false;
if (pObject instanceof TaxReturn) {
TaxReturn bean = (TaxReturn) pObject;
equals = (new EqualsBuilder().append(ssn, bean.ssn).append(year, bean.year)).isEquals();
}
return equals;
}
public int compareTo(Object pObject) {
return CompareToBuilder.reflectionCompare(this, pObject);
}
}
public class MainClass {
public static void main(String[] pArgs) throws Exception {
TaxReturn return1 = new TaxReturn("012-68-3242", 1998, "O'Brien", new BigDecimal(43000.00));
TaxReturn return2 = new TaxReturn("012-68-3242", 1999, "O'Brien", new BigDecimal(45000.00));
TaxReturn return3 = new TaxReturn("012-68-3242", 1999, "O'Brien", new BigDecimal(53222.00));
System.out.println("HashCodeBuilder: " + return2.hashCode());
Set set = new HashSet();
set.add(return1);
set.add(return2);
set.add(return3);
System.out.println(set);
}
}
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Download: CommonLangCustomHashCodeBuilder.zip( 202 k)