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:com.gistlabs.mechanize.filters.DefaultMechanizeChainFilter.java

public DefaultMechanizeChainFilter(final MechanizeFilter theEnd) {
    if (theEnd == null)
        throw new NullPointerException("The end of the processing chain can't be null!");
    this.theEnd = theEnd;
}

From source file:com.github.rvesse.airline.utils.predicates.LocaleSensitiveStringFinder.java

public LocaleSensitiveStringFinder(String value, Locale locale) {
    if (locale == null)
        throw new NullPointerException("locale cannot be null");
    this.value = value;
    this.collator = Collator.getInstance(locale);
}

From source file:com.netflix.config.ConfigurationBackedDynamicPropertySupportImpl.java

public ConfigurationBackedDynamicPropertySupportImpl(AbstractConfiguration config) {
    if (config == null) {
        throw new NullPointerException("config is null");
    }/*from   w w w. java2s  .c o  m*/
    this.config = config;
}

From source file:cz.muni.pa165.carparkapp.DAOImpl.LoanDAOImpl.java

@Override
public Loan addLoan(Loan loan) {
    if (loan == null) {
        throw new NullPointerException("Argument can't be null");
    }/*from ww w  .j  ava  2 s .  co  m*/
    em.persist(loan);
    return loan;
}

From source file:FileUtils.java

/**
 * //from www  .  java 2 s . c o m
 * Starts at the directory given and tests to see whether it is empty; if so,
 * it deletes it and moves up the directory tree, deleting empty directories
 * until it finds a non-empty one.
 * 
 * @param directory
 *          The first directory to test.
 * 
 * @throws IOException
 *           <ul>
 *           <li>If the directory does not exist or the user does not have
 *           permission to delete it or its parents.</li>
 *           </ul>
 * 
 */
public static void pruneEmptyDirectories(File directory) throws IOException {
    if (directory == null)
        throw new NullPointerException("NullFile");

    if (!directory.isDirectory()) {
        Object[] filler = { directory.getAbsolutePath() };
        String message = "NotDirectory";
        throw new IllegalArgumentException(message);
    }

    //
    // check to see if the directory is now empty and, if so, delete it
    // too, moving up the tree until we find one with stuff in it
    //
    while (directory != null) {
        File[] directoryFiles = directory.listFiles();

        //
        // if the directory has files, we're done
        //
        if (directoryFiles.length > 0)
            break;

        if (!directory.delete()) {
            Object[] filler = { directory.getAbsolutePath() };
            String message = "DeleteFailed";
            throw new IOException(message);
        }

        //
        // go up the tree
        //
        directory = directory.getParentFile();
    }
}

From source file:net.portalblock.untamedchat.bungee.UCConfig.java

public static void load() {
    final String NEW_LINE = System.getProperty("line.separator");
    File cfgDir = new File("plugins/UntamedChat");
    if (!cfgDir.exists()) {
        UntamedChat.getInstance().getLogger().info("No config directory found, generating one now!");
        cfgDir.mkdir();//from   ww w .  j  a va2 s. c  o  m
    }
    File configFile = new File(cfgDir + "/config.json");
    if (!configFile.exists()) {
        UntamedChat.getInstance().getLogger().info("No config file found, generating one now!");
        try {
            configFile.createNewFile();
            InputStream is = UCConfig.class.getResourceAsStream("/config.json");
            String line;
            if (is == null)
                throw new NullPointerException("is");
            BufferedReader reader = new BufferedReader(new InputStreamReader(is));
            FileWriter configWriter = new FileWriter(configFile);
            while ((line = reader.readLine()) != null) {
                configWriter.write(line + NEW_LINE);
            }
            configWriter.flush();
            configWriter.close();
            reader.close();
            is.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    try {
        BufferedReader reader = new BufferedReader(new FileReader(configFile));
        StringBuilder configBuilder = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            configBuilder.append(line);
        }
        JSONObject config = new JSONObject(configBuilder.toString());
        TARGET_FORMAT = config.optString("target_format", "&6{sender} &7-> &6Me&7: {msg}");
        SENDER_FORMAT = config.optString("sender_format", "&6Me &7-> &6{target}&7: {msg}");
        SOCIAL_SPY_FORMAT = config.optString("social_spy_format", "{sender} -> {target}: {msg}");
        GLOBAL_FORMAT = config.optString("global_format", "&7[&6{server}&7] [&6{sender}&7]: &r{msg}");
        gcDefault = config.optBoolean("global_chat_default", false);
        chatCoolDowns = config.optBoolean("enable_chat_cooldown", true);
        spDefault = config.optBoolean("social_spy_default", false);
        chatCooldown = config.optLong("chat_cooldown", 10);
        SPAM_MESSAGE = config.optString("spam_message", "&7[&cUntamedChat&7] &cDon't spam the chat!");
        JSONObject commands = config.optJSONObject("commands");
        if (commands == null) {
            msgAliases = new String[] { "msg", "m" };
            replyAliases = new String[] { "reply", "r" };
            globalAliases = new String[] { "globalchat", "global", "g" };
            socialSpyAliases = new String[] { "socialspy", "sp", "spy" };
        } else {
            msgAliases = makeCommandArray(commands.optJSONArray("msg"), "msg", "m");
            replyAliases = makeCommandArray(commands.optJSONArray("reply"), "reply", "r");
            globalAliases = makeCommandArray(commands.optJSONArray("global_chat"), "globalchat", "global", "g");
            socialSpyAliases = makeCommandArray(commands.optJSONArray("social_spy"), "socialspy", "sp", "spy");
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

From source file:com.github.sebhoss.contract.verifier.SpringBasedParameterNamesLookup.java

@Override
public String[] lookupParameterNames(final Method method) {
    final String[] parameterNames = nameDiscoverer.getParameterNames(method);

    if (parameterNames == null) {
        throw new NullPointerException("Discovered parameter names are NULL"); //$NON-NLS-1$
    }// w  w w  . j  a  va  2 s. co  m

    return parameterNames;
}

From source file:Main.java

/**
 * Determines the {@literal "length"} of a given object. This method 
 * currently understands:<ul>/*from  w ww  .  jav  a2  s .  c  o m*/
 * <li>{@link Collection}</li>
 * <li>{@link Map}</li> 
 * <li>{@link CharSequence}</li>
 * <li>{@link Array}</li>
 * <li>{@link Iterable}</li>
 * <li>{@link Iterator}</li>
 * </ul>
 * 
 * <p>More coming!
 * 
 * @param o {@code Object} whose length we want. Cannot be {@code null}.
 * 
 * @return {@literal "Length"} of {@code o}.
 * 
 * @throws NullPointerException if {@code o} is {@code null}.
 * @throws IllegalArgumentException if the method doesn't know how to test
 * whatever type of object {@code o} might be.
 */
@SuppressWarnings({ "WeakerAccess" })
public static int len(final Object o) {
    if (o == null) {
        throw new NullPointerException("Null arguments do not have a length");
    }
    if (o instanceof Collection<?>) {
        return ((Collection<?>) o).size();
    } else if (o instanceof Map<?, ?>) {
        return ((Map<?, ?>) o).size();
    } else if (o instanceof CharSequence) {
        return ((CharSequence) o).length();
    } else if (o instanceof Iterator<?>) {
        int count = 0;
        Iterator<?> it = (Iterator<?>) o;
        while (it.hasNext()) {
            it.next();
            count++;
        }
        return count;
    } else if (o instanceof Iterable<?>) {
        return len(((Iterable<?>) o).iterator());
    }

    throw new IllegalArgumentException("Don't know how to find the length of a " + o.getClass().getName());
}

From source file:TableModel.RestaurantTableModel.java

public String[] getColumnNames() {
    if (columnNames != null)
        return columnNames;
    else/*from ww  w.j a va  2s.c om*/
        throw new NullPointerException("String[] variable columnNames is null!!");
}

From source file:net.adamcin.httpsig.http.apache4.Http4Util.java

public static void enableAuth(final AbstractHttpClient client, final Keychain keychain, final KeyId keyId) {
    if (client == null) {
        throw new NullPointerException("client");
    }/*from   w  w  w .  j a  v  a  2s.c  om*/

    if (keychain == null) {
        throw new NullPointerException("keychain");
    }

    client.getAuthSchemes().register(Constants.SCHEME, new AuthSchemeFactory() {
        public AuthScheme newInstance(HttpParams params) {
            return new Http4SignatureAuthScheme();
        }
    });

    Signer signer = new Signer(keychain, keyId);
    client.getCredentialsProvider().setCredentials(AuthScope.ANY, new SignerCredentials(signer));
    client.getParams().setParameter(AuthPNames.TARGET_AUTH_PREF, Arrays.asList(Constants.SCHEME));

    HttpClientParams.setAuthenticating(client.getParams(), true);
}