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:gov.va.vinci.leo.tools.AutoCompile.java

/**
 * Compile the files in the list.  Optionally provide a destination directory where the
 * compiled files should be placed./*from   www .  ja  va 2s  .  c  o m*/
 *
 * @param files           List of java files to be compiled
 * @param outputDirectory Optional, output directory where the compiled files will be written
 * @throws Exception If there are errors compiling the files or we are unable to get a compiler
 */
public static void compileFiles(File[] files, String outputDirectory) throws Exception {
    //If the list is null there is nothing to do
    if (files == null) {
        return;
    }

    JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
    if (compiler == null) {
        throw new Exception("Unable to get a Compiler from the ToolProvider");
    }
    StandardJavaFileManager stdFileManager = compiler.getStandardFileManager(null, null, null);
    Iterable<String> compilationOptions = (StringUtils.isBlank(outputDirectory)) ? null
            : Arrays.asList(new String[] { "-d", outputDirectory });
    try {
        Iterable<? extends JavaFileObject> compilationUnits = stdFileManager
                .getJavaFileObjectsFromFiles(Arrays.asList(files));
        compiler.getTask(null, stdFileManager, null, compilationOptions, null, compilationUnits).call();
    } finally {
        stdFileManager.close();
    } //finally

}

From source file:TestMyStack.java

public void checkInvariant() throws Exception {
    if (!(next_index >= 0 && next_index < stack.length)) {
        throw new Exception("next_index out of range: " + next_index + " for stack length " + stack.length);
    }/*  ww w  .  j a v a  2 s  .co  m*/
}

From source file:Main.java

/**
 * Retrieves the DOM <code>NodeList</code> contained by the named element
 * in the given parent element.<br>
 * <br>//from w ww. j  a v a  2  s .c o m
 * <pre>
 * <parent-element>
 *     <named-list>
 *         <list-item/>
 *         <list-item/>
 *     </named-list>
 * </parent-element>
 * </pre>
 * 
 * In the above example, a <code>NodeList</code> containing the two
 * <pre><list-item/></pre> elements would be returned by passing the parent
 * element and "named-list" into the function parameters.
 * 
 * @param parent The parent DOM element that contains the named list.
 * @param containerTagName The name of the element that contains the list items.
 * @return A <code>NodeList</code> containing the list items.
 * @throws Exception If an exception occurs while traversing the DOM objects.
 */
public static NodeList getNamedNodeList(Element parent, String containerTagName) throws Exception {
    NodeList nl = parent.getElementsByTagName(containerTagName);

    if (nl.getLength() < 1) {
        throw new Exception("Missing named list: " + containerTagName);
    }

    return nl.item(0).getChildNodes();
}

From source file:net.fabricmc.installer.installer.LocalVersionInstaller.java

public static void install(File mcDir, IInstallerProgress progress) throws Exception {
    JFileChooser fc = new JFileChooser();
    fc.setDialogTitle(Translator.getString("install.client.selectCustomJar"));
    fc.setFileFilter(new FileNameExtensionFilter("Jar Files", "jar"));
    if (fc.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
        File inputFile = fc.getSelectedFile();

        JarFile jarFile = new JarFile(inputFile);
        Attributes attributes = jarFile.getManifest().getMainAttributes();
        String mcVersion = attributes.getValue("MinecraftVersion");
        Optional<String> stringOptional = ClientInstaller.isValidInstallLocation(mcDir, mcVersion);
        jarFile.close();//from  w  w  w.ja  v  a  2 s.c  om
        if (stringOptional.isPresent()) {
            throw new Exception(stringOptional.get());
        }
        ClientInstaller.install(mcDir, mcVersion, progress, inputFile);
    } else {
        throw new Exception("Failed to find jar");
    }

}

From source file:com.kwoksys.framework.util.HttpUtils.java

/**
 * Gets contents from url//from www  .jav  a2 s.com
 * @param url
 * @return
 * @throws Exception
 */
public static String getContent(String url) throws Exception {
    // Create an instance of HttpClient.
    HttpClient client = new HttpClient();

    // Create a method instance.
    GetMethod method = new GetMethod(url);

    // Provide custom retry handler is necessary
    method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
            new DefaultHttpMethodRetryHandler(3, false));

    try {
        // Execute the method.
        int statusCode = client.executeMethod(method);

        if (statusCode != HttpStatus.SC_OK) {
            throw new Exception("HTTP method error: " + method.getStatusLine());
        }

        // Read the response body.
        return new String(method.getResponseBody());

    } finally {
        // Release the connection.
        method.releaseConnection();
    }
}

From source file:com.appdynamicspilot.util.MD5.java

/**
 * Returns the hashed value of <code>clear</code>.
 *//*  ww  w. java  2  s. c  o m*/
public static String hash(String clear) throws Exception {
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] b = md.digest(clear.getBytes());

        int size = b.length;
        StringBuffer h = new StringBuffer(size);
        for (int i = 0; i < size; i++) {
            int u = b[i] & 255; // unsigned conversion
            if (u < 16) {
                h.append("0" + Integer.toHexString(u));
            } else {
                h.append(Integer.toHexString(u));
            }
        }
        return h.toString();
    } catch (Exception e) {
        throw new Exception(e);
    }
}

From source file:com.dc.tes.adapter.startup.remote.StartUpRemoteForReply.java

public StartUpRemoteForReply(Properties prop) throws Exception {
    if (!((String) prop.get("adapterType")).toUpperCase().equals("REPLY"))
        throw new Exception("??" + prop.get("adapterType") + "?!");

    m_props = prop;/*w  ww  .  j  a v a2s .c o m*/
}

From source file:com.taobao.tair.comm.TairProtocolEncoder.java

public void encode(IoSession session, Object message, ProtocolEncoderOutput out) throws Exception {
    if (!(message instanceof byte[])) {
        throw new Exception("must send byte[]");
    }/* w w w . j a v  a  2  s  .c  o  m*/
    byte[] payload = (byte[]) message;
    ByteBuffer buf = ByteBuffer.allocate(payload.length, false);
    buf.put(payload);
    buf.flip();
    out.write(buf);
    if (isDebugEnabled)
        LOGGER.debug(TairUtil.toHex(payload));
}

From source file:com.tianjunwei.handlerExceptionResolver.ExceptionController.java

@RequestMapping("/exception")
public String exception() throws Exception {
    throw new Exception("?");
}

From source file:Main.java

/**
 * Retrieve the value of an XML tag. For internal use only during parsing the accounts
 * configuration file./* www.  j  a  v  a2  s. c o m*/
 *
 * @param element The elemement containing the tag
 * @param tagName The string name of the tag
 * @return Tag value
 */
public static String getTagValue(Element element, String tagName) throws Exception {
    try {
        NodeList tagList = element.getElementsByTagName(tagName);
        Element tagElement = (Element) tagList.item(0);
        NodeList textTagList = tagElement.getChildNodes();

        return (textTagList.item(0)).getNodeValue().trim();
    } catch (Exception e) {
        throw new Exception(
                "Error in parsing the element \"" + element.toString() + "\" with the tag \"" + tagName + "\"");
    }
}