Examples of java.util.NavigableSet.subSet()

java.util.NavigableSet.subSet()
Returns a view of the portion of this set whose elements range from {@code fromElement} to {@code toElement}. If {@code fromElement} and{@code toElement} are equal, the returned set is empty unless {@code fromExclusive} and {@code toExclusive} are both true. The returned setis 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 fromInclusive {@code true} if the low endpointis to be included in the returned view @param toElement high endpoint of the returned set @param toInclusive {@code true} if the high endpointis to be included in the returned view @return a view of the portion of this set whose elements range from{@code fromElement}, inclusive, to {@code toElement}, exclusive @throws ClassCastException if {@code fromElement} and{@code toElement} cannot be compared to one another using thisset's comparator (or, if the set has no comparator, using natural ordering). Implementations may, but are not required to, throw this exception if {@code fromElement} or{@code toElement} cannot be compared to elements currently inthe set. @throws NullPointerException if {@code fromElement} or{@code toElement} is null and this set doesnot permit null elements @throws IllegalArgumentException if {@code fromElement} isgreater than {@code toElement}; or if this set itself has a restricted range, and {@code fromElement} or{@code toElement} lies outside the bounds of the range.

                endKey = (String) endIterator.next();
                int startIndex = Integer.valueOf(startKey);
                int endIndex = Integer.valueOf(endKey);
                if (startIndex > endIndex) {
                    try {
                        keySet.subSet(startKey, endKey);
                        fail("should throw IllegalArgumentException");
                    } catch (IllegalArgumentException e) {
                        // Expected
                    }

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                    } catch (IllegalArgumentException e) {
                        // Expected
                    }


                    try {
                        keySet.subSet(startKey, false, endKey, false);
                        fail("shoudl throw IllegalArgumentException");
                    } catch (IllegalArgumentException e) {
                        // Expected
                    }

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                    } catch (IllegalArgumentException e) {
                        // Expected
                    }


                    try {
                        keySet.subSet(startKey, false, endKey, true);
                        fail("shoudl throw IllegalArgumentException");
                    } catch (IllegalArgumentException e) {
                        // Expected
                    }

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                    } catch (IllegalArgumentException e) {
                        // Expected
                    }


                    try {
                        keySet.subSet(startKey, true, endKey, false);
                        fail("shoudl throw IllegalArgumentException");
                    } catch (IllegalArgumentException e) {
                        // Expected
                    }

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                    } catch (IllegalArgumentException e) {
                        // Expected
                    }


                    try {
                        keySet.subSet(startKey, true, endKey, true);
                        fail("shoudl throw IllegalArgumentException");
                    } catch (IllegalArgumentException e) {
                        // Expected
                    }
                } else {

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                        fail("shoudl throw IllegalArgumentException");
                    } catch (IllegalArgumentException e) {
                        // Expected
                    }
                } else {
                    subSet = keySet.subSet(startKey, endKey);
                    subSetIterator = subSet.iterator();
                    for (int index = startIndex; subSetIterator.hasNext(); index++) {
                        assertEquals(new Integer(index).toString(),
                                subSetIterator.next());
                    }

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                    for (int index = startIndex; subSetIterator.hasNext(); index++) {
                        assertEquals(new Integer(index).toString(),
                                subSetIterator.next());
                    }


                    subSet = keySet.subSet(startKey, false, endKey, false);
                    subSetIterator = subSet.iterator();
                    for (int index = startIndex + 1; subSetIterator.hasNext(); index++) {
                        assertEquals(new Integer(index).toString(),
                                subSetIterator.next());
                    }

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                    for (int index = startIndex + 1; subSetIterator.hasNext(); index++) {
                        assertEquals(new Integer(index).toString(),
                                subSetIterator.next());
                    }


                    subSet = keySet.subSet(startKey, false, endKey, true);
                    subSetIterator = subSet.iterator();
                    for (int index = startIndex + 1; subSetIterator.hasNext(); index++) {
                        assertEquals(new Integer(index).toString(),
                                subSetIterator.next());
                    }

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                    for (int index = startIndex + 1; subSetIterator.hasNext(); index++) {
                        assertEquals(new Integer(index).toString(),
                                subSetIterator.next());
                    }


                    subSet = keySet.subSet(startKey, true, endKey, false);
                    subSetIterator = subSet.iterator();
                    for (int index = startIndex; subSetIterator.hasNext(); index++) {
                        assertEquals(new Integer(index).toString(),
                                subSetIterator.next());
                    }

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                    for (int index = startIndex; subSetIterator.hasNext(); index++) {
                        assertEquals(new Integer(index).toString(),
                                subSetIterator.next());
                    }


                    subSet = keySet.subSet(startKey, true, endKey, true);
                    subSetIterator = subSet.iterator();
                    for (int index = startIndex; subSetIterator.hasNext(); index++) {
                        assertEquals(new Integer(index).toString(),
                                subSetIterator.next());
                    }

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