Example usage for java.lang IllegalArgumentException IllegalArgumentException

Introduction

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

Prototype

public IllegalArgumentException(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

private static String encodeUrlParams(/*@Nullable*/String userLocale,
        /*@Nullable*/String/*@Nullable*/[] params) {
    StringBuilder buf = new StringBuilder();
    String sep = "";
    if (userLocale != null) {
        buf.append("locale=").append(userLocale);
        sep = "&";
    }/*from ww w. j  a  v a2  s  . c om*/

    if (params != null) {
        if (params.length % 2 != 0) {
            throw new IllegalArgumentException(
                    "'params.length' is " + params.length + "; expecting a multiple of two");
        }
        for (int i = 0; i < params.length;) {
            String key = params[i];
            String value = params[i + 1];
            if (key == null)
                throw new IllegalArgumentException("params[" + i + "] is null");
            if (value != null) {
                buf.append(sep);
                sep = "&";
                buf.append(encodeUrlParam(key));
                buf.append("=");
                buf.append(encodeUrlParam(value));
            }
            i += 2;
        }
    }

    return buf.toString();
}

From source file:Main.java

public static Object evaluateXPath(String xpath, Object item, QName returnType) {
    try {//  w w  w .ja  v  a2s .  com
        return XPathFactory.newInstance().newXPath().compile(xpath).evaluate(item, returnType);
    } catch (XPathExpressionException e) {
        throw new IllegalArgumentException(e);
    }
}

From source file:Main.java

/**
 * Checks that an array does not contain null reference.
 *
 * @param parameterName   Parameter name.
 * @param parameterValues Parameter values.
 * @param <ParameterType> Parameter type.
 *///www  .  jav  a 2  s. c  o  m
static <ParameterType> void checkParameterArrayIsNotNull(final String parameterName,
        final ParameterType[] parameterValues) {
    // - Check array.
    checkParameterIsNotNull(parameterName, parameterValues);

    // - Check array size.
    if (parameterValues.length == 0) {
        throw new IllegalArgumentException(parameterName + " cannot be empty.");
    }

    // - Check array values.
    for (final ParameterType parameterValue : parameterValues) {
        if (parameterValue == null) {
            throw new IllegalArgumentException(parameterName + " cannot contain null.");
        }
    }
}

From source file:Main.java

private static Method findGetterMethod(String propertyName, Class<?> itemClass) {
    try {//from  ww w .j av  a 2 s  .  c o  m
        String capitalizedPropertyName = capitalize(propertyName);
        Method getterMethod;
        try {
            getterMethod = itemClass.getMethod("get" + capitalizedPropertyName);
        } catch (NoSuchMethodException e) {
            getterMethod = itemClass.getMethod("is" + capitalizedPropertyName);
        }
        return getterMethod;
    } catch (NoSuchMethodException e) {
        throw new IllegalArgumentException("Could not find getter method for property " + propertyName);
    }
}

From source file:Main.java

public static boolean nextStartTagInsideTree(final XmlPullParser pp, final String tagNamespace,
        final String tagName) throws XmlPullParserException, IOException {
    if (tagNamespace == null && tagName == null)
        throw new IllegalArgumentException(
                "namespace and name argument can not be both null:" + pp.getPositionDescription());

    if (pp.getEventType() != XmlPullParser.START_TAG && pp.getEventType() != XmlPullParser.END_TAG)
        throw new IllegalStateException(
                "expected START_TAG of parent or END_TAG of child:" + pp.getPositionDescription());

    while (true) {
        final int eventType = pp.next();

        if (eventType == XmlPullParser.START_TAG) {
            final String name = pp.getName();
            final String namespace = pp.getNamespace();
            boolean matches = (tagNamespace != null && tagNamespace.equals(namespace))
                    || (tagName != null && tagName.equals(name));
            if (matches)
                return true;

            skipSubTree(pp);//from  w  w  w .  jav a  2s  . co m
            pp.require(XmlPullParser.END_TAG, namespace, name);
        } else if (eventType == XmlPullParser.END_TAG) {
            return false;
        }
    }
}

From source file:Main.java

/**
 * Scales the provided dimension such that it is just large enough to fit
 * the target width and height.// www  . j  av  a  2  s  .co m
 *
 * @param dimensions The dimensions to scale
 * @param targetWidth The target width
 * @param targetHeight The target height
 * @return The scale factor applied to dimensions
 */
public static float scaleToFitTargetSize(int[] dimensions, int targetWidth, int targetHeight) {
    if (dimensions.length < 2 || dimensions[0] <= 0 || dimensions[1] <= 0) {
        throw new IllegalArgumentException(
                "Expected dimensions to have length >= 2 && dimensions[0] > 0 && " + "dimensions[1] > 0");
    }
    float scale = Math.max((float) targetWidth / dimensions[0], (float) targetHeight / dimensions[1]);
    dimensions[0] *= scale;
    dimensions[1] *= scale;
    return scale;
}