src/jdk.internal.opt/share/classes/jdk/internal/joptsimple/util/InetAddressConverter.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
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/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 * The MIT License
 *
 * Copyright (c) 2004-2015 Paul R. Holser, Jr.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
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 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
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 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
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package jdk.internal.joptsimple.util;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Locale;

import jdk.internal.joptsimple.ValueConversionException;
import jdk.internal.joptsimple.ValueConverter;
import jdk.internal.joptsimple.internal.Messages;

/**
 * Converts values to {@link java.net.InetAddress} using {@link InetAddress#getByName(String) getByName}.
 *
 * @author <a href="mailto:r@ymund.de">Raymund F\u00FCl\u00F6p</a>
 */
public class InetAddressConverter implements ValueConverter<InetAddress> {
    public InetAddress convert( String value ) {
        try {
            return InetAddress.getByName( value );
        }
        catch ( UnknownHostException e ) {
            throw new ValueConversionException( message( value ) );
        }
    }

    public Class<InetAddress> valueType() {
        return InetAddress.class;
    }

    public String valuePattern() {
        return null;
    }

    private String message( String value ) {
        return Messages.message(
            Locale.getDefault(),
            "jdk.internal.joptsimple.ExceptionMessages",
            InetAddressConverter.class,
            "message",
            value );
    }
}