Examples of java.util.ArrayList.ensureCapacity()

java.util.ArrayList.ensureCapacity()
Increases the capacity of this ArrayList instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument. @param minCapacity the desired minimum capacity

    int location = al.indexOf(testObject);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array1.",
                                location == al.indexOf(testObject));
                al.remove(0);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array2.",
                                --location == al.indexOf(testObject));
                al.ensureCapacity(capacity + 2);
                assertTrue("EnsureCapacity did not change location.",
                                location == al.indexOf(testObject));

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                                location == al.indexOf(testObject));
                al.remove(0);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array2.",
                                --location == al.indexOf(testObject));
                al.ensureCapacity(capacity + 2);
                assertTrue("EnsureCapacity did not change location.",
                                location == al.indexOf(testObject));
  }


  /**

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    for (i = 0; i < capacity / 2; i++) {
      al.add(i, new Object());
    }
    al.add(i, testObject);
    int location = al.indexOf(testObject);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array1.",
                                location == al.indexOf(testObject));
                al.remove(0);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array2.",

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    int location = al.indexOf(testObject);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array1.",
                                location == al.indexOf(testObject));
                al.remove(0);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array2.",
                                --location == al.indexOf(testObject));
                al.ensureCapacity(capacity + 2);
                assertTrue("EnsureCapacity did not change location.",
                                location == al.indexOf(testObject));

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                                location == al.indexOf(testObject));
                al.remove(0);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array2.",
                                --location == al.indexOf(testObject));
                al.ensureCapacity(capacity + 2);
                assertTrue("EnsureCapacity did not change location.",
                                location == al.indexOf(testObject));
  }


  /**

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    for (i = 0; i < capacity / 2; i++) {
      al.add(i, new Object());
    }
    al.add(i, testObject);
    int location = al.indexOf(testObject);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array1.",
                                location == al.indexOf(testObject));
                al.remove(0);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array2.",

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    int location = al.indexOf(testObject);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array1.",
                                location == al.indexOf(testObject));
                al.remove(0);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array2.",
                                --location == al.indexOf(testObject));
                al.ensureCapacity(capacity + 2);
                assertTrue("EnsureCapacity did not change location.",
                                location == al.indexOf(testObject));

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                                location == al.indexOf(testObject));
                al.remove(0);
                al.ensureCapacity(capacity);
                assertTrue("EnsureCapacity moved objects around in array2.",
                                --location == al.indexOf(testObject));
                al.ensureCapacity(capacity + 2);
                assertTrue("EnsureCapacity did not change location.",
                                location == al.indexOf(testObject));
  }


  /**

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    public void ensureCapacity(int capacity) {


        if (fast) {
            synchronized (this) {
                ArrayList temp = (ArrayList) list.clone();
                temp.ensureCapacity(capacity);
                list = temp;
            }
        } else {
            synchronized (list) {
                list.ensureCapacity(capacity);

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        for (i = 0; i < capacity / 2; i++) {
            al.add(i, new Object());
        }
        al.add(i, testObject);
        int location = al.indexOf(testObject);
        al.ensureCapacity(capacity);
        assertTrue("EnsureCapacity moved objects around in array1.",
                location == al.indexOf(testObject));
        al.remove(0);
        al.ensureCapacity(capacity);
        assertTrue("EnsureCapacity moved objects around in array2.",

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