Example usage for java.util Iterator hasNext

Introduction

In this page you can find the example usage for java.util Iterator hasNext.

Prototype

boolean hasNext();

Source Link

Document

Returns true if the iteration has more elements.

Usage

From source file:Main.java

public static String join(Collection<?> s, String delimiter) {
    StringBuilder builder = new StringBuilder();
    Iterator<?> iter = s.iterator();
    while (iter.hasNext()) {
        builder.append(iter.next());/*from   w  w  w  .  j  a va  2 s .c o  m*/
        if (iter.hasNext()) {
            builder.append(delimiter);
        }
    }
    return builder.toString();
}

From source file:Main.java

/**
 * Converts the given collection to a <code>java.util.List</code>.
 * @param collection The collection to convert to a list.
 * @return A <code>java.util.List</code> containing all of the elements from the
 *         supplied collection.//from   w  ww.j  a  v a  2  s  .co  m
 */
public static List toList(Collection collection) {
    if (collection instanceof List)
        return (List) collection;

    List list = new ArrayList();
    Iterator iterator = collection.iterator();
    while (iterator.hasNext()) {
        list.add(iterator.next());
    }
    return list;
}

From source file:Main.java

public static <T extends Collection<?>> void stripNulls(T collection) {
    Iterator<?> iterator = collection.iterator();
    while (iterator.hasNext()) {
        if (iterator.next() == null)
            iterator.remove();/*w ww. ja  v  a2s. c om*/
    }
}

From source file:Main.java

public static <T> List<T> listFromIterator(Iterator<T> i) {
    List<T> retval = new ArrayList<T>();
    while (i.hasNext())
        retval.add(i.next());/* w ww .  ja  v  a 2s .  c  o  m*/
    return retval;
}

From source file:Main.java

public static Map<String, Object> toMap(JSONObject object) throws JSONException {
    Map<String, Object> map = new HashMap();
    Iterator keys = object.keys();
    while (keys.hasNext()) {
        String key = (String) keys.next();
        map.put(key, fromJson(object.get(key)));
    }//from  w ww  .  j a  v a 2 s. com
    return map;
}

From source file:Main.java

public static void removeNullValues(List<?> list) {

    Iterator<?> iterator = list.iterator();

    while (iterator.hasNext()) {

        Object value = iterator.next();

        if (value == null) {

            iterator.remove();//from   w  ww. java 2  s  . com
        }
    }
}

From source file:Main.java

public static <T> List<T> toList(Iterator<T> it) {
    List<T> result = new ArrayList<T>();
    while (it.hasNext())
        result.add(it.next());//ww w .  j av  a  2  s. co  m
    return result;
}

From source file:Main.java

public static String toString(Iterable<Object> pathItrb) {
    LinkedList<Object> list = new LinkedList<Object>();
    Iterator itr = pathItrb.iterator();
    while (itr.hasNext()) {
        list.addFirst(itr.next());/*ww  w . j av a2  s .c o  m*/
    }
    //
    StringBuilder sb = new StringBuilder();
    boolean isFirst = true;
    for (Object obj : list) {
        if (isFirst) {
            isFirst = false;
        } else {
            sb.append("/"); // NOI18N
        }
        sb.append(obj.toString());
    }
    //
    return sb.toString();
}

From source file:Main.java

/**
 * Joins a collection of strings to a single string, all parts are merged with a delimiter string.
 *
 * @param aContainer/*from www .  j a v a2 s.c  o  m*/
 * @param aDelimiter
 * @return
 */
public static String join(final Iterable<String> aContainer, final String aDelimiter) {
    StringBuilder builder = new StringBuilder();
    Iterator<String> it = aContainer.iterator();
    while (it.hasNext()) {
        builder.append(it.next());
        if (it.hasNext())
            builder.append(aDelimiter);
    }
    return builder.toString();
}

From source file:Main.java

protected static void checkPermittedEmail(Set permitted, String email) throws CertPathValidatorException {
    if (permitted.isEmpty()) {
        return;/*  w  ww.  ja  v a  2  s . c om*/
    }

    String sub = email.substring(email.indexOf('@') + 1);
    Iterator it = permitted.iterator();

    while (it.hasNext()) {
        String str = (String) it.next();

        if (sub.endsWith(str)) {
            return;
        }
    }

    throw new CertPathValidatorException("Subject email address is not from a permitted subtree");
}