http://www.bouncycastle.org/java.html: The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.
  • The Legion of the Bouncy Castle Inc. 
package org.bouncycastle.cert.dane;

import org.bouncycastle.util.Selector;

public class DANEEntrySelector
    implements Selector
{
    private final String domainName;

    DANEEntrySelector(String domainName)
    {
        this.domainName = domainName;
    }

    public boolean match(Object obj)
    {
        DANEEntry dEntry = (DANEEntry)obj;

        return dEntry.getDomainName().equals(domainName);
    }

    public Object clone()
    {
        return this;
    }

    public String getDomainName()
    {
        return domainName;
    }
}