public class BinaryTree extends Object
The methods getKeys() and getValues() return values in ascending order of key. The keys are compared using a default Collator which sorts in alphabetical order with intelligent handling of case and accents.
Note that duplicate keys are not allowed: a new entry silently overwrites any previous entry with the same key. If you want to use dulicate keys, append a unique value (for example, a random number) to each one.
Constructor and Description |
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BinaryTree() |
Modifier and Type | Method and Description |
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Object |
get(Object key)
get(String) returns the value corresponding to a given key, if any
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Vector |
getKeys()
getKeys() returns the keys in the tree in sorted order.
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Vector |
getValues()
getValues() returns the values in the tree in sorted order.
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boolean |
isEmpty()
isEmpty()
Tests if this binary tree contains no keys.
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static void |
main(String[] args) |
Object |
put(Object key,
Object value)
put(Object, Object) puts a new entry in the tree, overwriting any previous entry with
the same key.
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Object |
remove(Object key)
remove(Object)
removes the key (and its corresponding value) from this Binary Tree.
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void |
setAscending(boolean ascending)
Set order.
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void |
setComparer(Comparer c)
Set the Comparer to be used for the keys in this tree.
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void |
setDuplicatesAllowed(boolean allow)
Define whether duplicate keys are allowed or not.
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int |
size()
size()
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public void setAscending(boolean ascending)
ascending
- true indicates ascending order; false indicates descendingpublic void setDuplicatesAllowed(boolean allow)
public void setComparer(Comparer c)
public Vector getValues()
public Vector getKeys()
public Object get(Object key)
key
- The key value being soughtpublic boolean isEmpty()
public Object put(Object key, Object value)
key
- The value of the key. Note this must be a String, and must not be null.value
- The value to be associated with this key. Must not be null.public Object remove(Object key)
key
- identifies the entry to be removedpublic int size()