Example usage for java.lang Exception Exception

Introduction

In this page you can find the example usage for java.lang Exception Exception.

Prototype

public Exception(String message, Throwable cause) 

Source Link

Document

Constructs a new exception with the specified detail message and cause.

Usage

From source file:Sha1.java

public static String sha1(String text) {
    try {/*w  w w  .  j  a va2s .  c  om*/
        MessageDigest md = MessageDigest.getInstance("SHA-1");

        md.update(text.getBytes("iso-8859-1"), 0, text.length());

        return convertToHex(md.digest());
    } catch (Exception e) {
        throw new Exception(format("Problem hashing %s", text), e);
    }
}

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From source file:Main.java

public static Object readBeanFromXml(String path) throws Exception {
    FileInputStream fis = null;//from   w w w . java2  s  . c  om
    Object aplicacion = null;
    BufferedInputStream bis = null;
    try {
        fis = new FileInputStream(path);
        bis = new BufferedInputStream(fis);
        XMLDecoder xmlDecoder = new XMLDecoder(bis);
        aplicacion = (Object) xmlDecoder.readObject();

    } catch (FileNotFoundException ex) {
        throw new Exception("File to read not found.", ex);
    } finally {
        if (fis != null) {
            try {
                fis.close();
            } catch (IOException ex) {
                throw new Exception("File to close FileInputStream after read.", ex);
            }
        }

        if (bis != null) {
            try {
                bis.close();
            } catch (IOException ex) {
                throw new Exception("File to close BufferedInputStream after read.", ex);
            }
        }
    }

    return aplicacion;

}

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From source file:Main.java

public static boolean hasValidXmlDeclaration(byte[] doc) throws Exception {
    try {// www  .  j a  v  a  2s  . c o  m
        XMLStreamReader r = xif.createXMLStreamReader(new ByteArrayInputStream(doc), null);
        if (!"UTF-8".equalsIgnoreCase(r.getEncoding()))
            return false;
        if (!"1.0".equals(r.getVersion()))
            return false;

        r.close();
        return true;
    } catch (XMLStreamException e) {
        throw new Exception("Unable to parse xml", e);
    }
}

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From source file:Main.java

/**
 * Performs a xpath query on a document and returns the matching nodelist.
 *
 * @param doc/*from   w w  w. j  av  a 2 s.  com*/
 * @param xpathQuery
 * @return nodelist of matches
 * @throws Exception
 */
public static NodeList query(Document doc, String xpathQuery) throws Exception {
    NodeList result = null;
    // prepare XPath
    XPath xpath = XPathFactory.newInstance().newXPath();

    try {
        // query xml
        result = (NodeList) xpath.evaluate(xpathQuery, doc, XPathConstants.NODESET);
    } catch (XPathExpressionException xpx) {
        throw new Exception("Error evaluating XPath: " + xpx.getMessage(), xpx);
    }
    return result;
}

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From source file:Main.java

/** Given a parent element, locate double value of a child node.
 *  @param parent Parent element//w  ww  .ja v  a2  s . c o m
 *  @param name Name of child element
 *  @return Value of child element, or empty result
 *  @throws Exception on error parsing the number
 */
public static Optional<Double> getChildDouble(final Element parent, final String name) throws Exception {
    final Element child = getChildElement(parent, name);
    if (child == null)
        return Optional.empty();
    try {
        return Optional.of(Double.valueOf(getString(child)));
    } catch (NumberFormatException ex) {
        throw new Exception("Expected double for <" + name + ">", ex);
    }
}

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From source file:Main.java

/** Given a parent element, locate integer value of a child node.
 *  @param parent Parent element//from   w  w w  .ja  va 2 s  .co m
 *  @param name Name of child element
 *  @return Value of child element, or empty result
 *  @throws Exception on error parsing the number
 */
public static Optional<Integer> getChildInteger(final Element parent, final String name) throws Exception {
    final Element child = getChildElement(parent, name);
    if (child == null)
        return Optional.empty();
    try {
        return Optional.of(Integer.valueOf(getString(child)));
    } catch (NumberFormatException ex) {
        throw new Exception("Expected integer for <" + name + ">", ex);
    }
}

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From source file:Main.java

private static DocumentBuilder getDocumentBuilder() throws Exception {
    DocumentBuilderFactory factory = null;
    DocumentBuilder builder = null;
    //--- Create a new factory instance via JAXP
    try {//from  ww w.j a va  2 s . com
        factory = DocumentBuilderFactory.newInstance();
    } catch (FactoryConfigurationError e) {
        throw new Exception("XmlUtil.parse() : Cannot create DocumentBuilderFactory ", e);
    } catch (Throwable t) {
        throw new Exception("XmlUtil.parse() : Cannot create DocumentBuilderFactory ", t);
    }
    if (factory != null) {
        //--- Create a DOM parser ( instance of a builder )
        try {
            builder = factory.newDocumentBuilder();
        } catch (ParserConfigurationException e) {
            throw new Exception("XmlUtil.parse() : Cannot create DocumentBuilder ", e);
        } catch (Throwable t) {
            throw new Exception("XmlUtil.parse() : Cannot create DocumentBuilder ", t);
        }
    } else {
        throw new Exception("XmlUtil.parse() : DocumentBuilderFactory instance is null");
    }

    if (builder == null) {
        throw new Exception("XmlUtil.parse() : DocumentBuilder instance is null");
    }
    return builder;
}

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From source file:Main.java

/**
 * Check if the file provide is PKCS12/*from www.  ja  v a2  s.  c o m*/
 * @param cert certificate to be validated
 * @param pass password to be provided
 * @throws Exception to indicate an invalid certificate
 */
public static void validate(byte[] cert, String pass) throws Exception {

    try {
        KeyStore keyStore = KeyStore.getInstance(ALGORITHM);
        keyStore.load(new ByteArrayInputStream(cert), pass.toCharArray());
    } catch (Exception e) {
        throw new Exception("Certificate is not valid!", e);
    }
}

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From source file:Main.java

/**
 * Reads an xml string into XML Document.
 * /*  w ww  . java 2s.co m*/
 * @param xmlStr String containing xml
 * @return xml Document
 * @throws Exception
 */
public static Document readXmlString(String xmlStr) throws Exception {

    Document doc = null;

    try {

        DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
        domFactory.setNamespaceAware(false);

        DocumentBuilder builder = domFactory.newDocumentBuilder();
        InputSource inStream = new InputSource();
        inStream.setCharacterStream(new StringReader(xmlStr));
        doc = builder.parse(inStream);
    } catch (ParserConfigurationException e) {
        throw new Exception(e.getMessage(), e);
    } catch (SAXException e) {
        throw new Exception(e.getMessage(), e);
    } catch (IOException e) {
        throw new Exception(e.getMessage(), e);
    } catch (Exception e) {
        throw new Exception(e.getMessage(), e);
    }

    return doc;

}

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From source file:Main.java

/**
 * Parse the content of the given file as an XML document and return a new DOM
 * //from   w  ww.  j  a  va 2 s .c  om
 * @param fileName
 * @return xml Document
 * @throws Exception
 */
public static Document readXmlFile(String fileName) throws Exception {

    Document doc = null;

    try {
        File xmlFile = new File(fileName);
        DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
        domFactory.setNamespaceAware(false);

        DocumentBuilder builder = domFactory.newDocumentBuilder();
        doc = builder.parse(xmlFile);

    } catch (ParserConfigurationException e) {
        throw new Exception(e.getMessage(), e);
    } catch (Exception e) {
        throw new Exception(e.getMessage(), e);
    }
    return doc;

}

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