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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def java_version():
 """Call java and return version information. :return unicode: Java version string """

    result = subprocess.check_output(
        [c.JAVA, '-version'], stderr=subprocess.STDOUT
    )
    first_line = result.splitlines()[0]
    return first_line.decode()