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Public Class Arrayclass Extends Javalangobject Description Class Wrapper Java Array Additi Q43903911

public class ArrayClass

extends java.lang.Object

Description: Class wrapper for a Java array, with additionalmanagement operations

Note: Maintains a capacity value for maximum number of itemsthat can be stored, and a size value for the number of valid orviable data items in the array

Implement the followings in ArrayClass:

• Field Detail

  • DEFAULT_CAPACITY

    private static final int DEFAULT_CAPACITY

    See Also:

    Constant Field Values

  • FAILED_ACCESS

    public static final int FAILED_ACCESS

    See Also:

    Constant Field Values

  • localArray

    private int[] localArray

  • arraySize

    private int arraySize

  • arrayCapacity

    private int arrayCapacity

• Constructor Detail

  • ArrayClass

    public ArrayClass()

    Default constructor, initializes array to default capacity(10)

  • ArrayClass

    public ArrayClass(int capacity)

    Initializing constructor, initializes array to specifiedcapacity

    Parameters:

    capacity – integer maximum capacity specification for thearray

  • ArrayClass

    public ArrayClass(int capacity, int size, int fillValue)

    Initializing constructor, initializes array to specifiedcapacity, size to specified value, then fills all elements withspecified size value

    Parameters:

    capacity – maximum capacity specification for the array

    size – sets the number of items to be filled in array, and setsthe size of the ArrayClass object

    fillValue – value to be placed in all elements of initializedarray up to the size

  • ArrayClass

    public ArrayClass(ArrayClass copied)

    Copy constructor, initializes array to size and capacity ofcopied array, then copies only the elements up to the givensize

    Parameters:

    copied – ArrayClass object to be copied

• Method Detail

  • accessItemAt

    public int accessItemAt(int accessIndex)

    Accesses item in array at specified index if index within arraysize bounds

    Parameters:

    accessIndex – index of requested element value

    Returns:

    accessed value if successful, FAILED_ACCESS (-999999) if not

  • appendItem

    public boolean appendItem(int newValue)

    Appends item to end of array, if array is not full, e.g., nomore values can be added

    Parameters:

    newValue – value to be appended to array

    Returns:

    Boolean success if appended, or failure if array was full

  • clear

    public void clear()

    Clears array of all valid values by setting array size to zero,values remain in array but are not accessible

  • getCurrentCapacity

    public int getCurrentCapacity()Description: Gets current capacity of array

    Note: capacity of array indicates number of values the array canhold

    Returns:

    capacity of array

  • getCurrentSize

    public int getCurrentSize()Description: Gets current size of array

    Note: size of array indicates number of valid or viable valuesin the array

    Returns:

    size of array

  • insertItemAt

    public boolean insertItemAt(int insertIndex, int newValue)Description: Inserts item to array at specified index if array isnot full, e.g., no more values can be added

    Note: Value is inserted at given index, all data from that indexto the end of the array is shifted up by one

    Note: Value can be inserted after the last valid element but notat any index past that point

    Parameters:

    insertIndex – index of element into which value is to beinserted

    newValue – value to be inserted into array

    Returns:

    Boolean success if inserted, or failure if array was full

  • isFull

    public boolean isFull()

    Tests for size of array equal to capacity, no more values can beadded

    Returns:

    Boolean result of test for full

  • isEmpty

    public boolean isEmpty()

    Tests for size of array equal to zero, no valid values stored inarray

    Returns:

    Boolean result of test for empty

  • removeItemAt

    public int removeItemAt(int removeIndex)Description: Removes item from array at specified index if indexwithin array size bounds

    Note: Each data item from the element immediately above theremove index to the end of the array is moved down by oneelement

    Parameters:

    removeIndex – index of element value to be removed

    Returns:

    removed value if successful, FAILED_ACCESS (-999999) if not

  • resize

    public boolean resize(int newCapacity)Description: Resets array capacity, copies current size and currentsize number of elements

    Exception: Method will not resize capacity below current arraycapacity, returns false if this is attempted, true otherwise

    Parameters:

    newCapacity – new capacity to be set; must be larger thancurrent capacity

    Returns:

    Boolean condition of resize success or failure

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