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(Throwable cause)

Source Link

Document

Constructs a new exception with the specified cause and a detail message of (cause==null ?

Usage

From source file:Main.java

/**
 * @param child/* w  w  w  . j  a v  a 2 s  .  c o m*/
 * @return the single child element or null
 * @throws Exception if the child is present multiple times
 */
public static Element getChild(Element element, String child) throws Exception {
    NodeList nodes = element.getChildNodes();
    Element ret = null;
    for (int i = 0; i < nodes.getLength(); i++) {
        Node childNode = nodes.item(i);
        if (childNode.getNodeName().equalsIgnoreCase(child) && childNode.getNodeType() == Node.ELEMENT_NODE) {
            if (ret != null) {
                throw new Exception("Child element '" + child + "' present multiple times");
            } else {
                ret = (Element) childNode;
            }
        }
    }
    if (ret == null) {
        return null;
    } else {
        return ret;
    }
}

From source file:Main.java

public static String SimpleHttp(String urlStr) throws Exception {

    URL url = new URL(urlStr);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    int resCode = conn.getResponseCode();
    InputStream input = null;/*from  w  w w. j a va2 s  . co  m*/
    String result = null;
    if (resCode == 200) {
        input = conn.getInputStream();
        result = toString(input);
        input.close();
        conn.disconnect();
    } else {
        throw new Exception("connect failed");
    }

    return result;
}

From source file:GCD.java

/**
* Returns the Greatest Common Divisor of two
* numbers that are passed into the method.
*
* @param a the first integer for comparison.
* @param b the second integer for comparison.
* @throws NegativeNumberException if the input given is negative.
* @returns the Greatest Common Divisor./*from  w  w  w. j av  a2s  .c om*/
*/
public static int gcd(int a, int b) throws Exception {
    // throw an exception if the input is negative
    if (a < 0 || b < 0) {
        throw new Exception("The user has entered a " + "negative number.");
    }

    if (b == 0)
        return a;
    else
        return gcd(b, a % b);
}

From source file:Main.java

/**
 * Convert string to XML {@link Document}
 *
 * @param string - string to be converted
 * @return - {@link Document}/*from   w ww .  j a v  a2 s  . com*/
 * @throws Exception - if {@link DocumentBuilder} is not initialized
 */
public static Document stringToXml(String string) throws Exception {
    if (builder == null) {
        throw new Exception("DocumentBuilder is null.");
    }
    return builder.parse(new InputSource(new ByteArrayInputStream(string.getBytes("UTF-8"))));
}

From source file:Main.java

public static boolean isImage(Blob blob) throws Exception {
    InputStream in = null;/*from www  . ja v  a 2 s  .co  m*/
    byte[] bytes = new byte[8];
    try {
        in = blob.getBinaryStream();

        in.read(bytes);
        return isImage(bytes);
    } catch (Exception ex) {
        throw new Exception(ex.toString());
    } finally {
        if (in != null) {
            try {
                in.close();
            } catch (IOException ex) {
                throw new Exception(ex.toString());
            }
        }
        bytes = null;
    }
}

From source file:com.att.pirates.util.DBUtility.java

public static Connection getDBConnection() throws SQLException, Exception {
    Connection conn = null;// ww w .j  a  v a 2 s.  com
    PropertyReader reader = new PropertyReader();
    String forName = reader.readPropertyByName(PiratesConstants.CLASSFORNAME);
    if (StringUtils.isBlank(forName) || StringUtils.isEmpty(forName)) {
        throw new Exception("forName is empty from property file");
    }

    String serverName = reader.readPropertyByName(PiratesConstants.SERVERNAME);
    String databaseName = reader.readPropertyByName(PiratesConstants.DATABASENAME);
    String user = reader.readPropertyByName(PiratesConstants.USER);
    String password = reader.readPropertyByName(PiratesConstants.PASSWORD);

    if (StringUtils.isBlank(serverName) || StringUtils.isEmpty(databaseName) || StringUtils.isBlank(user)
            || StringUtils.isEmpty(password)) {
        throw new Exception("connection string is empty from property file");
    }

    String url = serverName + ";" + "databaseName=" + databaseName;
    Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
    conn = DriverManager.getConnection(url, user, password);
    return conn;
}

From source file:Main.java

/**
 * Determine whether a single child is available of a particular type.
 * @return true if the specified child element is present
 * @throws Exception if the child is present multiple times.
 *//*from  w ww. j a  va 2 s  . co  m*/
public static boolean hasChild(Element element, String child) throws Exception {
    NodeList nodes = element.getChildNodes();
    Element ret = null;
    for (int i = 0; i < nodes.getLength(); i++) {
        Node childNode = nodes.item(i);
        if (childNode.getNodeName().equals(child) && childNode.getNodeType() == Node.ELEMENT_NODE) {
            if (ret != null) {
                throw new Exception("Child element '" + child + "' present multiple times");
            } else {
                ret = (Element) childNode;
            }
        }
    }
    return ret != null;
}

From source file:Main.java

public static boolean compareNode(Node nQ, Node nN, Boolean considerLength, Map<String, Node> qvars)
        throws Exception {
    /*System.out.println("current query tree:");
    try {//from   www  .  ja v a 2  s.c  o  m
     System.out.println(printDocument(nQ));
    }catch (Exception e) {
     e.printStackTrace();
    }
    System.out.println("current comp tree:");
    try {
     System.out.println(printDocument(nN));
    }catch (Exception e) {
     e.printStackTrace();
    }// END OF DEBUG output XML */
    if (qvars == null) {
        throw new Exception("qvars array must not be null");
    }
    if (nQ.hasChildNodes()) {
        int nQChildLength = nQ.getChildNodes().getLength();
        if (nN.hasChildNodes() && (!considerLength || nQChildLength == nN.getChildNodes().getLength())) {
            //loop through all childnodes
            for (int i = 0; i < nQChildLength; i++) {
                //System.out.println("recurse to "+ nQ.getChildNodes().item( i )+"vs"+nN.getChildNodes().item( i )); //DEBUG output XML
                if (!compareNode(nQ.getChildNodes().item(i), nN.getChildNodes().item(i), considerLength,
                        qvars)) {
                    return false;
                }
            }
        }
    }
    //check for qvar descendant, add to qvar hashmap for checking (required for checking multiple qvars)
    if (nQ.getNodeName().equals("mws:qvar")) {
        String qvarName = nQ.getAttributes().getNamedItem("name").getNodeValue();
        if (qvars.containsKey(qvarName)) {
            return compareNode(qvars.get(qvarName), nN, considerLength, qvars);
        } else {
            qvars.put(qvarName, nN);
            return true;
        }
    } else {
        //Attributes are ignored; child nodelists are not equal in length and considerlength is false OR reached lowest level: therefore check nodevalue
        if (nQ.getNodeName().equals(nN.getNodeName())) {
            try {
                return nQ.getNodeValue().trim().equals(nN.getNodeValue().trim());
            } catch (NullPointerException e) {
                //NodeValue does not exist
                return true;
            }
        } else {
            return false;
        }
    }
}

From source file:Main.java

public static File getFile(Context context, Uri uri, boolean forceCreation) {

    if (!forceCreation && "file".equalsIgnoreCase(uri.getScheme())) {
        return new File(uri.getPath());
    }/*from  ww  w  .jav  a  2  s .  c o  m*/

    File file = null;

    try {
        File root = context.getFilesDir();
        if (root == null) {
            throw new Exception("data dir not found");
        }
        file = new File(root, getFilename(context, uri));
        file.delete();
        InputStream is = context.getContentResolver().openInputStream(uri);
        OutputStream os = new FileOutputStream(file);
        byte[] buf = new byte[1024];
        int cnt = is.read(buf);
        while (cnt > 0) {
            os.write(buf, 0, cnt);
            cnt = is.read(buf);
        }
        os.close();
        is.close();
        file.deleteOnExit();
    } catch (Exception e) {
        Log.e("OpenFile", e.getMessage(), e);
    }
    return file;
}

From source file:Main.java

private static void checkResponse(int[] response, int expectedLength) throws Exception {
    checkResponse(response);/*from   w  w  w . ja v  a 2  s . com*/
    if (response.length != expectedLength)
        throw new Exception("Unexpected response length.");
}