public final class ArrayBag<T> extends java.lang.Object implements BagInterface<T>
Constructor and Description |
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ArrayBag()
Creates an empty bag whose initial capacity is 25.
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ArrayBag(int desiredCapacity)
Creates an empty bag having a given initial capacity.
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Modifier and Type | Method and Description |
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boolean |
add(T newEntry)
Adds a new entry to this bag.
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void |
clear()
Removes all entries from this bag.
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boolean |
contains(T anEntry)
Tests whether this bag contains a given entry.
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int |
getCurrentSize()
Gets the current number of entries in this bag.
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int |
getFrequencyOf(T anEntry)
Counts the number of times a given entry appears in this bag.
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boolean |
isEmpty()
Sees whether this bag is empty.
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T |
remove()
Removes one unspecified entry from this bag, if possible.
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boolean |
remove(T anEntry)
Removes one occurrence of a given entry from this bag.
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T[] |
toArray()
Retrieves all entries that are in this bag.
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java.lang.String |
toString()
Override the toString() method so that we get a more useful display of
the contents in the bag.
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public ArrayBag()
public ArrayBag(int desiredCapacity)
desiredCapacity
- The integer capacity desired.public boolean add(T newEntry)
add
in interface BagInterface<T>
newEntry
- The object to be added as a new entry.public T[] toArray()
toArray
in interface BagInterface<T>
public boolean isEmpty()
isEmpty
in interface BagInterface<T>
public int getCurrentSize()
getCurrentSize
in interface BagInterface<T>
public int getFrequencyOf(T anEntry)
getFrequencyOf
in interface BagInterface<T>
anEntry
- The entry to be counted.public boolean contains(T anEntry)
contains
in interface BagInterface<T>
anEntry
- The entry to locate.public void clear()
clear
in interface BagInterface<T>
public T remove()
remove
in interface BagInterface<T>
public boolean remove(T anEntry)
remove
in interface BagInterface<T>
anEntry
- The entry to be removed.public java.lang.String toString()
toString
in class java.lang.Object