Examples of java.util.NavigableSet.tailSet()

java.util.NavigableSet.tailSet()
Returns a view of the portion of this set whose elements are greater than (or equal to, if {@code inclusive} is true) {@code fromElement}. The returned set is backed by this set, so changes in the returned set are reflected in this set, and vice-versa. The returned set supports all optional set operations that this set supports.
The returned set will throw an {@code IllegalArgumentException}on an attempt to insert an element outside its range. @param fromElement low endpoint of the returned set @param inclusive {@code true} if the low endpointis to be included in the returned view @return a view of the portion of this set whose elements are greaterthan or equal to {@code fromElement} @throws ClassCastException if {@code fromElement} is not compatiblewith this set's comparator (or, if the set has no comparator, if {@code fromElement} does not implement {@link Comparable}). Implementations may, but are not required to, throw this exception if {@code fromElement} cannot be compared to elementscurrently in the set. @throws NullPointerException if {@code fromElement} is nulland this set does not permit null elements @throws IllegalArgumentException if this set itself has arestricted range, and {@code fromElement} lies outside thebounds of the range

            key = (String) iterator.next();
            assertEquals(new Integer(index).toString(), key);
        }
        assertEquals(110, index);


        tailSet = keySet.tailSet(startKey, false);
        iterator = tailSet.iterator();
        for (index = 100; iterator.hasNext(); index++) {
            key = (String) iterator.next();
            assertEquals(new Integer(index + 1).toString(), key);
        }

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            assertEquals(new Integer(index + 1).toString(), key);
        }
        assertEquals(109, index);


        startKey = new Integer(101).toString();
        tailSet = keySet.tailSet(startKey);
        iterator = tailSet.iterator();
        for (index = 101; iterator.hasNext(); index++) {
            key = (String) iterator.next();
            assertEquals(new Integer(index).toString(), key);
        }

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            key = (String) iterator.next();
            assertEquals(new Integer(index).toString(), key);
        }
        assertEquals(110, index);


        tailSet = keySet.tailSet(startKey, true);
        iterator = tailSet.iterator();
        for (index = 101; iterator.hasNext(); index++) {
            key = (String) iterator.next();
            assertEquals(new Integer(index).toString(), key);
        }

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            key = (String) iterator.next();
            assertEquals(new Integer(index).toString(), key);
        }
        assertEquals(110, index);


        tailSet = keySet.tailSet(startKey, false);
        iterator = tailSet.iterator();
        for (index = 101; iterator.hasNext(); index++) {
            key = (String) iterator.next();
            assertEquals(new Integer(index + 1).toString(), key);
        }

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        assertEquals(109, index);


        for (int i = 102; i < 109; i++) {
            startKey = new Integer(i).toString();


            tailSet = keySet.tailSet(startKey);
            iterator = tailSet.iterator();
            int j;
            for (j = i; iterator.hasNext(); j++) {
                key = (String) iterator.next();
                assertEquals(new Integer(j).toString(), key);

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                key = (String) iterator.next();
                assertEquals(new Integer(j).toString(), key);
            }
            assertEquals(110, j);


            tailSet = keySet.tailSet(startKey, true);
            iterator = tailSet.iterator();
            for (j = i; iterator.hasNext(); j++) {
                key = (String) iterator.next();
                assertEquals(new Integer(j).toString(), key);
            }

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                key = (String) iterator.next();
                assertEquals(new Integer(j).toString(), key);
            }
            assertEquals(110, j);


            tailSet = keySet.tailSet(startKey, false);
            iterator = tailSet.iterator();
            for (j = i; iterator.hasNext(); j++) {
                key = (String) iterator.next();
                assertEquals(new Integer(j + 1).toString(), key);
            }

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            }
            assertEquals(109, j);
        }


        startKey = new Integer(109).toString();
        tailSet = keySet.tailSet(startKey);
        iterator = tailSet.iterator();
        for (index = 109; iterator.hasNext(); index++) {
            key = (String) iterator.next();
            assertEquals(new Integer(index).toString(), key);
        }

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            key = (String) iterator.next();
            assertEquals(new Integer(index).toString(), key);
        }
        assertEquals(110, index);


        tailSet = keySet.tailSet(startKey, true);
        iterator = tailSet.iterator();
        for (index = 109; iterator.hasNext(); index++) {
            key = (String) iterator.next();
            assertEquals(new Integer(index).toString(), key);
        }

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            key = (String) iterator.next();
            assertEquals(new Integer(index).toString(), key);
        }
        assertEquals(110, index);


        tailSet = keySet.tailSet(startKey, false);
        iterator = tailSet.iterator();
        for (index = 109; iterator.hasNext(); index++) {
            key = (String) iterator.next();
            assertEquals(new Integer(index + 1).toString(), key);
        }

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