Example usage for java.util Collections unmodifiableSet

Introduction

In this page you can find the example usage for java.util Collections unmodifiableSet.

Prototype

public static <T> Set<T> unmodifiableSet(Set<? extends T> s)

Source Link

Document

Returns an unmodifiable view of the specified set.

Usage

From source file:Main.java

/**
 * Convert a char array to a unmodifiable Set.
 *
 * @param array the contents of the new Set
 * @return a unmodifiable Set containing the elements in the array.
 *///  w ww  . j  a  v a2s  .  c  o m
public static Set<Character> arrayToUnmodifiableSet(char... array) {
    if (array == null) {
        return Collections.emptySet();
    }
    if (array.length == 1) {
        return Collections.singleton(array[0]);
    }
    return Collections.unmodifiableSet(arrayToSet(array));
}

From source file:Main.java

/**
 * Convert a String to a unmodifiable set of characters.
 *
 * @param str The string to convert//from w  w  w  .  j  a v a  2 s  . c o m
 * @return A set containing the characters in str. A empty set is returned if str is null.
 */
public static Set<Character> strToUnmodifiableSet(String str) {
    if (str == null) {
        return Collections.emptySet();
    }
    if (str.length() == 1) {
        return Collections.singleton(str.charAt(0));
    }
    return Collections.unmodifiableSet(strToSet(str));
}

From source file:net.openid.appauth.AdditionalParamsProcessor.java

static Set<String> builtInParams(String... params) {
    if (params == null || params.length == 0) {
        return Collections.emptySet();
    }/*from w w w .j a  v  a 2 s. co  m*/

    return Collections.unmodifiableSet(new HashSet<>(Arrays.asList(params)));
}

From source file:Main.java

/**
 * Returns an immutable Serializable Set containing the values.
 * @param <T> T/* w  ww.j a  v a  2s . co m*/
 * @param values Collection<T>
 * @return Set<T>
 */
public static <T> Set<T> unmodifiableSet(Collection<T> values) {
    TreeSet<T> set = new TreeSet<T>(values);
    return Collections.unmodifiableSet(set);
}

From source file:Main.java

public static Set<String> getQueryParameterNames(Uri uri) {
    String query = uri.getEncodedQuery();
    if (query == null) {
        return Collections.emptySet();
    }//from w  w w .j a v  a2s. c om

    Set<String> names = new LinkedHashSet<String>();
    int start = 0;
    do {
        int next = query.indexOf('&', start);
        int end = (next == -1) ? query.length() : next;

        int separator = query.indexOf('=', start);
        if (separator > end || separator == -1) {
            separator = end;
        }

        String name = query.substring(start, separator);
        names.add(uri.decode(name));

        // Move start to end of name.
        start = end + 1;
    } while (start < query.length());

    return Collections.unmodifiableSet(names);
}

From source file:Main.java

/**
 * @return an <b>UNMODIFIABLE</b> Set&lt;T&gt;
 *///from   w  w w  .j  a v a  2 s  . c  om
@SafeVarargs
public static <T> Set<T> set(T... elements) {
    return Collections.unmodifiableSet(new HashSet<>(Arrays.asList(elements)));
}

From source file:org.jboss.capedwarf.connect.server.HttpHeaders.java

/**
 * Get headers; read-only./*w  w w  . j  av a 2  s . c o  m*/
 *
 * @return the headers
 */
public static Set<Header> getHeaders() {
    Set<Header> set = tlh.get();
    if (set == null)
        return Collections.emptySet();

    return Collections.unmodifiableSet(set);
}

From source file:Main.java

/**
 * Returns an unmodifiable versions of the Set of Enums.  If the contents of the set are known
 * to be unmodifiable by the caller in any way, the set itself will be retured, otherwise an
 * unmodifiable copy of the Set will be returned.
 * @param s Set to get the tamper-proof version of
 * @return An unmodifiable tamper-proof version of the set
 *///from  w  w  w  . ja  v  a 2s. co m
public static <E extends Enum<E>> Set<E> unmodifiableCopyOfEnumSet(Set<E> s) {
    Class<? extends Set> copyClass = s.getClass();

    if ((_EMPTY_SET == copyClass) || (_SINGLETON_SET == copyClass)) {
        // these classes are already unmodifiable, so just return
        return s;
    } else {
        return Collections.unmodifiableSet(EnumSet.copyOf(s));
    }
}

From source file:dumpsection.util.Util.java

public static Set<Integer> stringArrayToUnsignedIntegerSet(String[] src, int radix) {
    Set<Integer> x = new HashSet<>();
    List<String> ls = new ArrayList<>();
    ls.addAll(Arrays.asList(src));
    for (String s : ls) {
        try {//from   w w w.j  av  a2  s.  c o m
            x.add(Integer.parseUnsignedInt(s, radix));
        } catch (NumberFormatException e) {
            throw e;
        }
    }
    return Collections.unmodifiableSet(x);
}

From source file:com.github.itoshige.testrail.store.CaseStore.java

public Set<CaseStoreKey> getSectionId2Tiltes() {
    return Collections.unmodifiableSet(casesMap.keySet());
}