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  * Copyright (C) 2011 Tatsuhiro Tsujikawa
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  * obtaining a copy of this software and associated documentation
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  * modify, merge, publish, distribute, sublicense, and/or sell copies
  * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be
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package net.sourceforge.argparse4j.inf;

This interface defines type conversion method.

<T> Type this object convert to.
public interface ArgumentType<T> {


Converts value to appropriate type.

If the objects derived from java.lang.RuntimeException are thrown in conversion because of invalid input from command line, subclass must catch these exceptions and wrap them in ArgumentParserException and give simple error message to explain what happened briefly.

parser The aprser.
arg The argument this type attached to.
value The attribute value.
Converted object.
ArgumentParserException If conversion fails.
    T convert(ArgumentParser parserArgument argString value)
            throws ArgumentParserException;
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