Examples of java.util.Vector.capacity()

java.util.Vector.capacity()
Returns the current capacity of this vector. @return the current capacity (the length of its internaldata array, kept in the field {@code elementData}of this vector)

  public void test_ensureCapacityI() {
    // Test for method void java.util.Vector.ensureCapacity(int)


    Vector v = new Vector(9);
    v.ensureCapacity(20);
    assertEquals("ensureCapacity failed to set correct capacity", 20, v
        .capacity());
    v = new Vector(100);
    assertEquals("ensureCapacity reduced capacity", 100, v.capacity());
        
        v.ensureCapacity(150);

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    Vector v = new Vector(9);
    v.ensureCapacity(20);
    assertEquals("ensureCapacity failed to set correct capacity", 20, v
        .capacity());
    v = new Vector(100);
    assertEquals("ensureCapacity reduced capacity", 100, v.capacity());
        
        v.ensureCapacity(150);
        assertEquals(
                "ensuieCapacity failed to set to be twice the old capacity",
                200, v.capacity());

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    assertEquals("ensureCapacity reduced capacity", 100, v.capacity());
        
        v.ensureCapacity(150);
        assertEquals(
                "ensuieCapacity failed to set to be twice the old capacity",
                200, v.capacity());


        v = new Vector(9, -1);
        v.ensureCapacity(20);
        assertEquals("ensureCapacity failed to set to be minCapacity", 20, v
                .capacity());

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                "ensuieCapacity failed to set to be twice the old capacity",
                200, v.capacity());


        v = new Vector(9, -1);
        v.ensureCapacity(20);
        assertEquals("ensureCapacity failed to set to be minCapacity", 20, v
                .capacity());
        v.ensureCapacity(15);
        assertEquals("ensureCapacity reduced capacity", 20, v.capacity());
        v.ensureCapacity(35);
        assertEquals(

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        v = new Vector(9, -1);
        v.ensureCapacity(20);
        assertEquals("ensureCapacity failed to set to be minCapacity", 20, v
                .capacity());
        v.ensureCapacity(15);
        assertEquals("ensureCapacity reduced capacity", 20, v.capacity());
        v.ensureCapacity(35);
        assertEquals(
                "ensuieCapacity failed to set to be twice the old capacity",
                40, v.capacity());

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        v.ensureCapacity(15);
        assertEquals("ensureCapacity reduced capacity", 20, v.capacity());
        v.ensureCapacity(35);
        assertEquals(
                "ensuieCapacity failed to set to be twice the old capacity",
                40, v.capacity());


        v = new Vector(9, 4);
        v.ensureCapacity(11);
        assertEquals("ensureCapacity failed to set correct capacity", 13, v
                .capacity());

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                "ensuieCapacity failed to set to be twice the old capacity",
                40, v.capacity());


        v = new Vector(9, 4);
        v.ensureCapacity(11);
        assertEquals("ensureCapacity failed to set correct capacity", 13, v
                .capacity());
        v.ensureCapacity(5);
        assertEquals("ensureCapacity reduced capacity", 13, v.capacity());
        v.ensureCapacity(20);
        assertEquals(

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        v = new Vector(9, 4);
        v.ensureCapacity(11);
        assertEquals("ensureCapacity failed to set correct capacity", 13, v
                .capacity());
        v.ensureCapacity(5);
        assertEquals("ensureCapacity reduced capacity", 13, v.capacity());
        v.ensureCapacity(20);
        assertEquals(
                "ensuieCapacity failed to set to be twice the old capacity",
                20, v.capacity());
  }

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        v.ensureCapacity(5);
        assertEquals("ensureCapacity reduced capacity", 13, v.capacity());
        v.ensureCapacity(20);
        assertEquals(
                "ensuieCapacity failed to set to be twice the old capacity",
                20, v.capacity());
  }


  /**
   * @tests java.util.Vector#equals(java.lang.Object)
   */

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  public void test_trimToSize() {
    // Test for method void java.util.Vector.trimToSize()
    Vector v = new Vector(10);
    v.addElement(new Object());
    v.trimToSize();
    assertEquals("Failed to trim capacity", 1, v.capacity());
  }


  protected Vector vectorClone(Vector s) {
    return (Vector) s.clone();
  }

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