Example usage for java.lang NullPointerException NullPointerException

Introduction

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

Prototype

public NullPointerException(String s)

Source Link

Document

Constructs a NullPointerException with the specified detail message.

Usage

From source file:it.scoppelletti.mobilepower.app.HelpDialogFragment.java

/**
 * Istanzia un frammento.//from   www. ja  v  a  2 s. c  om
 * 
 * @param  mode    Modalit&agrave;.
 * @param  titleId Identificatore della risorsa del titolo.
 * @param  textId  Identificatore della risorsa del testo.
 * @param  prefKey Chiave della preferenza che indica se la Guida &egrave;
 *                 gi&agrave; stata visualizzata.
 * @return         Frammento.
 */
public static HelpDialogFragment newInstance(int mode, int titleId, int textId, String prefKey) {
    Bundle args;
    HelpDialogFragment fragment;

    if (StringUtils.isBlank(prefKey)) {
        throw new NullPointerException("Argument prefKey is null.");
    }

    args = new Bundle();
    args.putInt(HelpDialogFragment.ARG_MODE, mode);
    args.putInt(HelpDialogFragment.ARG_TITLEID, titleId);
    args.putInt(HelpDialogFragment.ARG_TEXTID, textId);
    args.putString(HelpDialogFragment.ARG_PREFKEY, prefKey);

    fragment = new HelpDialogFragment();
    fragment.setArguments(args);

    return fragment;
}

From source file:com.dianping.lion.util.UrlUtils.java

public static String resolveUrl(String url, Map<String, ?> parameters, String... includes) {
    if (url == null) {
        throw new NullPointerException("Param[url] cannot be null.");
    }//  w  w  w.ja  v a 2s.  c  o m
    return resolveUrl(url, resolveUrl(parameters, includes));
}

From source file:com.martinkampjensen.thesis.minimization.ObjectiveFunction.java

/**
 * Constructs a new {@link MultivariateRealFunction} for use with the
 * optimization classes of the Apache Commons Math package.
 * // w ww .  jav a  2s . com
 * @param model the model being optimized.
 * @throws NullPointerException if <code>model</code> is <code>null</code>.
 * @see <a href="http://commons.apache.org/math/">Apache Commons Math</a>
 */
public ObjectiveFunction(Model model) {
    if (model == null) {
        throw new NullPointerException("model == null");
    }

    _model = model.copy();
}

From source file:edu.cornell.mannlib.vitro.webapp.auth.permissions.DisplayByRolePermission.java

public DisplayByRolePermission(String roleName, RoleLevel roleLevel) {
    super(NAMESPACE + roleName);

    if (roleName == null) {
        throw new NullPointerException("role may not be null.");
    }//from www . j a v a2s  .  co m
    if (roleLevel == null) {
        throw new NullPointerException("roleLevel may not be null.");
    }

    this.roleName = roleName;
    this.roleLevel = roleLevel;
}

From source file:com.espertech.esper.epl.view.OutputConditionPolledTime.java

/**
 * Constructor.//from ww w  .j  ava 2 s  . c  om
 * @param timePeriod is the number of minutes or seconds to batch events for, may include variables
 * @param context is the view context for time scheduling
 */
public OutputConditionPolledTime(ExprTimePeriod timePeriod, AgentInstanceContext context) {
    if (context == null) {
        String message = "OutputConditionTime requires a non-null view context";
        throw new NullPointerException(message);
    }

    this.context = context;
    this.timePeriod = timePeriod;

    Double numSeconds = (Double) timePeriod.evaluate(null, true, context);
    if (numSeconds == null) {
        throw new IllegalArgumentException(
                "Output condition by time returned a null value for the interval size");
    }
    if ((numSeconds < 0.001) && (!timePeriod.hasVariable())) {
        throw new IllegalArgumentException(
                "Output condition by time requires a interval size of at least 1 msec or a variable");
    }
    this.msecIntervalSize = Math.round(1000 * numSeconds);
    this.lastUpdate = -msecIntervalSize - 1;
}

From source file:Main.java

/**
 * Get the thread info for the thread with the given name. A null is
 * returned if no such thread info is found. If more than one thread has the
 * same name, the thread info for the first one found is returned.
 * /*from  w w w .ja v a  2  s . c  om*/
 * @param name
 *        the thread name to search for
 * @return the thread info, or null if not found
 * @throws NullPointerException
 *         if the name is null
 */
public static ThreadInfo getThreadInfo(final String name) {
    if (name == null) {
        throw new NullPointerException("Null name");
    }

    final Thread[] threads = getAllThreads();
    for (Thread thread : threads) {
        if (thread.getName().equals(name)) {
            return getThreadInfo(thread.getId());
        }
    }
    return null;
}

From source file:com.nfwork.dbfound.json.JSONDynaBean.java

public boolean contains(String name, String key) {
    Object value = dynaValues.get(name);
    if (value == null) {
        throw new NullPointerException("Unmapped property name: " + name + " key: " + key);
    } else if (!(value instanceof Map)) {
        throw new IllegalArgumentException("Non-Mapped property name: " + name + " key: " + key);
    }/*from w w w. j  av a 2 s  .  c o  m*/
    return ((Map) value).containsKey(key);
}

From source file:net.centro.rtb.monitoringcenter.config.HostAndPort.java

/**
 * Parses a host and port from a string and instantiates an instance of HostAndPort using the obtained values.
 *
 * @param hostAndPortStr a string to parse.
 * @return an instance of HostAndPort containing the host and port values parsed from the passed in string.
 * @throws NullPointerException if the passed in string is <tt>null</tt>.
 * @throws IllegalArgumentException if the passed in string is empty.
 *///  www.j a  v a2s. c om
public static HostAndPort fromString(String hostAndPortStr) {
    if (hostAndPortStr == null) {
        throw new NullPointerException("hostAndPortStr cannot be null");
    }
    if (hostAndPortStr.trim().isEmpty()) {
        throw new IllegalArgumentException("hostAndPortStr cannot be blank");
    }

    String[] hostAndPortStrParts = hostAndPortStr.split(":");
    if (hostAndPortStrParts.length == 2) {
        String host = hostAndPortStrParts[0].trim();
        String portStr = hostAndPortStrParts[1].trim();

        Integer port = null;
        try {
            port = Integer.parseInt(portStr);
        } catch (NumberFormatException e) {
            throw new IllegalArgumentException("Port cannot be parsed from " + portStr, e);
        }

        return new HostAndPort(host, port);
    } else {
        throw new IllegalArgumentException("Invalid format: " + hostAndPortStr + ". Expected host:port.");
    }
}

From source file:com.cyclopsgroup.waterview.jelly.ScriptLayout.java

/**
 * Constructor for class JellyScriptLayout
 *
 * @param script Jelly script object/*from ww w . j  a  v a 2  s. c o m*/
 * @param module Module to run
 */
public ScriptLayout(Script script, Module module) {
    this.script = script;
    if (script == null) {
        throw new NullPointerException("Script can not be null");
    }
    setModule(module);
}

From source file:org.echocat.nodoodle.server.WebService.java

@Override
public void init(ServletContext servletContext) throws ServletException {
    if (servletContext == null) {
        throw new NullPointerException("No servletContext provided.");
    }/*from  w w w  .j a  va 2 s .c o m*/
    if (_applicationContext == null) {
        throw new IllegalStateException("The applicationContext is not set.");
    }
    final ServletConfigImpl servletConfig = new ServletConfigImpl(servletContext);
    _servlet.init(servletConfig);
}