Java Code Examples for java.util.Locale.hashCode()

public void TestSimpleObjectStuff() {
    Locale  test1 = new Locale("aa", "AA");
    Locale  test2 = new Locale("aa", "AA");
    Locale  test3 = (Locale)test1.clone();
    Locale  test4 = new Locale("zz", "ZZ");

    if (test1 == test2 || test1 == test3 || test1 == test4 || test2 == test3)
        errln("Some of the test variables point to the same locale!");

    if (test3 == null)
        errln("clone() failed to produce a valid object!");

    if (!test1.equals(test2) || !test1.equals(test3) || !test2.equals(test3))
        errln("clone() or equals() failed: objects that should compare equal don't");

    if (test1.equals(test4) || test2.equals(test4) || test3.equals(test4))
        errln("equals() failed: objects that shouldn't compare equal do");

    int hash1 = test1.hashCode();
    int hash2 = test2.hashCode();
    int hash3 = test3.hashCode();

    if (hash1 != hash2 || hash1 != hash3 || hash2 != hash3)
        errln("hashCode() failed: objects that should have the same hash code don't");
}
 

/**
 * @bug 4110613
 */
public void TestSerialization() throws ClassNotFoundException, OptionalDataException,
                IOException, StreamCorruptedException
{
    ObjectOutputStream ostream;
    ByteArrayOutputStream obstream;
    byte[] bytes = null;

    obstream = new ByteArrayOutputStream();
    ostream = new ObjectOutputStream(obstream);

    Locale test1 = new Locale("zh", "TW", "");
    int dummy = test1.hashCode();   // fill in the cached hash-code value
    ostream.writeObject(test1);

    bytes = obstream.toByteArray();

    ObjectInputStream istream = new ObjectInputStream(new ByteArrayInputStream(bytes));

    Locale test2 = (Locale)(istream.readObject());

    if (!test1.equals(test2) || test1.hashCode() != test2.hashCode())
        errln("Locale failed to deserialize correctly.");
}
 

public void TestSimpleObjectStuff() {
    Locale test1 = new Locale("aa", "AA");
    Locale test2 = new Locale("aa", "AA");
    Locale test3 = (Locale) test1.clone();
    Locale test4 = new Locale("zz", "ZZ");

    if (test1 == test2 || test1 == test3 || test1 == test4 || test2 == test3) {
        errln("Some of the test variables point to the same locale!");
    }

    if (test3 == null) {
        errln("clone() failed to produce a valid object!");
    }

    if (!test1.equals(test2) || !test1.equals(test3) || !test2.equals(test3)) {
        errln("clone() or equals() failed: objects that should compare equal don't");
    }

    if (test1.equals(test4) || test2.equals(test4) || test3.equals(test4)) {
        errln("equals() failed: objects that shouldn't compare equal do");
    }

    int hash1 = test1.hashCode();
    int hash2 = test2.hashCode();
    int hash3 = test3.hashCode();

    if (hash1 != hash2 || hash1 != hash3 || hash2 != hash3) {
        errln("hashCode() failed: objects that should have the same hash code don't");
    }
}
 

public static void main(String[] args) {
    Locale[] locales = Locale.getAvailableLocales();
    int min = Integer.MAX_VALUE;
    int max = Integer.MIN_VALUE;
    Map<Integer, Locale> map = new HashMap<>(locales.length);
    int conflicts = 0;

    for (int i = 0; i < locales.length; i++) {
        Locale loc = locales[i];
        int hc = loc.hashCode();
        min = Math.min(hc, min);
        max = Math.max(hc, max);
        Integer key = hc;
        if (map.containsKey(key)) {
            conflicts++;
            System.out.println("conflict: " + map.get(key) + ", " + loc);
        } else {
            map.put(key, loc);
        }
    }
    System.out.println(locales.length + " locales: conflicts=" + conflicts
            + ", min=" + min + ", max=" + max + ", diff=" + (max - min));
    if (conflicts >= (locales.length / 10)) {
        throw new RuntimeException("too many conflicts: " + conflicts
                + " per " + locales.length + " locales");
    }
}