Example usage for java.lang IllegalStateException IllegalStateException

Introduction

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

Prototype

public IllegalStateException(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

public static String getChildText(Element parent, String childName) {
    NodeList list = parent.getElementsByTagName(childName);
    if (list.getLength() > 1) {
        throw new IllegalStateException("Multiple child elements with name " + childName);
    } else if (list.getLength() == 0) {
        return null;
    }/*from w  ww  .j a v  a 2  s .  co  m*/
    Element child = (Element) list.item(0);
    return getText(child);
}

From source file:Main.java

/**
 * Get the current application context/*from   w w  w .jav a  2s  . c  o m*/
 * 
 * @return
 */
public static Context getApplicationContext() {
    if (sApplicationContext == null) {
        throw new IllegalStateException(
                "Context is empty. Don't forget to call setContext in the Application.onCreate() method");
    }
    return sApplicationContext;
}

From source file:Main.java

/**
 * Throws an IllegalStateException if this thread is the Swing Event Thread.
 * @throws IllegalStateException if this thread is the Swing Event Thread
 *//*from ww w  .  j  ava2 s  . c o  m*/
public static void throwIfEventThread() {
    if (SwingUtilities.isEventDispatchThread())
        throw new IllegalStateException("This method should NOT be called from the Swing Event Thread");
}

From source file:Main.java

private static DOMImplementationRegistry makeRegistry() {
    try {//w  ww .  j a  va 2 s  .co m
        return DOMImplementationRegistry.newInstance();
    } catch (ClassCastException e) {
        throw new IllegalStateException(e);
    } catch (ClassNotFoundException e) {
        throw new IllegalStateException(e);
    } catch (InstantiationException e) {
        throw new IllegalStateException(e);
    } catch (IllegalAccessException e) {
        throw new IllegalStateException(e);
    }
}

From source file:Main.java

private static void a(Context context) {
    Looper looper = Looper.myLooper();//from w w w .  j av a2 s. com
    if (looper != null && looper == context.getMainLooper()) {
        throw new IllegalStateException("calling this from your main thread can lead to deadlock");
    } else {
        return;
    }
}

From source file:Main.java

public static JFrame getOnlyVisibleFrame() {
    JFrame f = null;/* ww  w  . j av  a  2 s . co  m*/
    for (Window w : Window.getWindows())
        if (w instanceof JFrame && w.isShowing()) {
            if (f != null)
                throw new IllegalStateException("num frames > 1");
            f = (JFrame) w;
        }
    return f;
}

From source file:Main.java

/**
 * Finds the value that belongs to the given key in the given map.
 * If the key is null or no value is found, an {@link IllegalStateException} is thrown.
 *///ww w .  jav  a 2  s . c om
public static <T1, T2> T2 find(T1 key, Map<T1, T2> map) throws IllegalStateException {
    if (key == null)
        throw new IllegalStateException("Key is null");
    T2 ret = map.get(key);
    if (ret == null)
        throw new IllegalStateException("No value for key " + key);
    return ret;
}

From source file:Main.java

/**
 * verify that the object is not null. If it is, throws a new
 * IllegalStateException with the given message
 * /*from w  ww .j av a  2 s  . c om*/
 * @param object
 * @param message
 */
public static void notNull(Object object, String message) {
    if (object == null) {
        throw new IllegalStateException(message);
    }
}

From source file:Main.java

public static File getDestinationInExternalPublicDir(String dirType, String fileName) {
    File file = Environment.getExternalStoragePublicDirectory(dirType);
    if (file.exists()) {
        if (!file.isDirectory()) {
            throw new IllegalStateException(file.getAbsolutePath() + " already exists and is not a directory");
        }/*  w ww  .  ja  v  a2  s .co m*/
    } else {
        if (!file.mkdirs()) {
            throw new IllegalStateException("Unable to create directory: " + file.getAbsolutePath());
        }
    }

    //mDestinationUri = Uri.withAppendedPath(Uri.fromFile(file), subPath);
    /*File destFolder =  new File(file.getAbsolutePath() + File.separator + DOWNLOAD_FOLDER);
    if (destFolder.exists()) {
    if (!destFolder.isDirectory()) {
        throw new IllegalStateException(file.getAbsolutePath() +
                " already exists and is not a directory");
    }
    } else {
    if (!destFolder.mkdirs()) {
        throw new IllegalStateException("Unable to create directory: "+
                destFolder.getAbsolutePath());
    }
    }
            
    File destFile = new File(destFolder.getAbsolutePath() + File.separator + fileName);*/
    return new File(file.getAbsolutePath() + File.separator + fileName);
}

From source file:Main.java

public static <E> E first(Collection<E> collection) {

    if (isEmpty(collection)) {
        return null;
    }/*w ww. j  av a 2  s. c  om*/

    Iterator<E> iterator = collection.iterator();

    if (iterator.hasNext()) {
        return iterator.next();
    }

    throw new IllegalStateException("Should not happen");
}