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.

            iterator.next();
            endEntry = (Entry) iterator.next();
            subSet = descendingSubMapEntrySet.subSet(startEntry, endEntry);
            assertEquals(2, subSet.size());


            subSet = descendingSubMapEntrySet.subSet(startEntry, false,
                    endEntry, false);
            assertEquals(1, subSet.size());
            subSetIterator = subSet.iterator();
            assertEquals(199, ((Entry) subSetIterator.next()).getValue());

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                    endEntry, false);
            assertEquals(1, subSet.size());
            subSetIterator = subSet.iterator();
            assertEquals(199, ((Entry) subSetIterator.next()).getValue());


            subSet = descendingSubMapEntrySet.subSet(startEntry, false,
                    endEntry, true);
            assertEquals(2, subSet.size());
            subSetIterator = subSet.iterator();
            assertEquals(199, ((Entry) subSetIterator.next()).getValue());
            assertEquals(198, ((Entry) subSetIterator.next()).getValue());

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            assertEquals(2, subSet.size());
            subSetIterator = subSet.iterator();
            assertEquals(199, ((Entry) subSetIterator.next()).getValue());
            assertEquals(198, ((Entry) subSetIterator.next()).getValue());


            subSet = descendingSubMapEntrySet.subSet(startEntry, true,
                    endEntry, false);
            assertEquals(2, subSet.size());
            subSetIterator = subSet.iterator();
            assertEquals(2, ((Entry) subSetIterator.next()).getValue());
            assertEquals(199, ((Entry) subSetIterator.next()).getValue());

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            assertEquals(2, subSet.size());
            subSetIterator = subSet.iterator();
            assertEquals(2, ((Entry) subSetIterator.next()).getValue());
            assertEquals(199, ((Entry) subSetIterator.next()).getValue());


            subSet = descendingSubMapEntrySet.subSet(startEntry, true,
                    endEntry, true);
            assertEquals(3, subSet.size());
            subSetIterator = subSet.iterator();
            assertEquals(2, ((Entry) subSetIterator.next()).getValue());
            assertEquals(199, ((Entry) subSetIterator.next()).getValue());

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                    endEntry = (Entry) iteratorEnd.next();
                    int startIndex = (Integer) startEntry.getValue();
                    int endIndex = (Integer) endEntry.getValue();
                    if (startIndex < endIndex) {
                        try {
                            descendingSubMapEntrySet.subSet(startEntry,
                                    endEntry);
                            fail("should throw IllegalArgumentException");
                        } catch (IllegalArgumentException e) {
                            // Expected
                        }

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                        } catch (IllegalArgumentException e) {
                            // Expected
                        }


                        try {
                            descendingSubMapEntrySet.subSet(startEntry, false,
                                    endEntry, false);
                            fail("should throw IllegalArgumentException");
                        } catch (IllegalArgumentException e) {
                            // Expected
                        }

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                        } catch (IllegalArgumentException e) {
                            // Expected
                        }


                        try {
                            descendingSubMapEntrySet.subSet(startEntry, false,
                                    endEntry, true);
                            fail("should throw IllegalArgumentException");
                        } catch (IllegalArgumentException e) {
                            // Expected
                        }

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                        } catch (IllegalArgumentException e) {
                            // Expected
                        }


                        try {
                            descendingSubMapEntrySet.subSet(startEntry, true,
                                    endEntry, false);
                            fail("should throw IllegalArgumentException");
                        } catch (IllegalArgumentException e) {
                            // Expected
                        }

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                        } catch (IllegalArgumentException e) {
                            // Expected
                        }


                        try {
                            descendingSubMapEntrySet.subSet(startEntry, true,
                                    endEntry, true);
                            fail("should throw IllegalArgumentException");
                        } catch (IllegalArgumentException e) {
                            // Expected
                        }

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                            fail("should throw IllegalArgumentException");
                        } catch (IllegalArgumentException e) {
                            // Expected
                        }
                    } else {
                        subSet = descendingSubMapEntrySet.subSet(startEntry,
                                endEntry);
                        subSetIterator = subSet.iterator();
                        for (int index = startIndex; subSetIterator.hasNext(); index--) {
                            assertEquals(index, ((Entry) subSetIterator.next())
                                    .getValue());

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