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Java : Collection Framework : TreeMap (TailMap Inclusive)

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Ram N

Posts: 2777
Nickname: ramram
Registered: Jul, 2014

Ram N is Java Programmer
Java : Collection Framework : TreeMap (TailMap Inclusive) Posted: Feb 5, 2015 8:16 AM
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This post originated from an RSS feed registered with Java Buzz by Ram N.
Original Post: Java : Collection Framework : TreeMap (TailMap Inclusive)
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TreeMapExample.java
import java.util.SortedMap;
import java.util.TreeMap;

/*
* Example of tailMap(K fromKey, boolean inclusive) method.
*/

public class TreeMapExample
{
public static void main(String[] args)
{

TreeMap<Integer, String> treeMap = new TreeMap<Integer, String>();

treeMap.put(10, "Cat");
treeMap.put(50, "Dog");
treeMap.put(30, "Apple");
treeMap.put(40, "Ball");
treeMap.put(20, "Eagle");

System.out.println("treeMap : " + treeMap + "\n");

/*
* Returns a view of the portion of this map whose keys are greater than
* (or equal to, if inclusive is true) fromKey. The returned map is
* backed by this map, so changes in the returned map are reflected in
* this map, and vice-versa. The returned map supports all optional map
* operations that this map supports.
*/

SortedMap<Integer, String> sortedMap = treeMap.tailMap(20, false);

System.out.println("sortedMap [inclusive is false] : " + sortedMap
+ "\n");

sortedMap = treeMap.tailMap(20, true);

System.out.println("sortedMap [inclusive is true] : " + sortedMap);

}
}
Output
treeMap : {10=Cat, 20=Eagle, 30=Apple, 40=Ball, 50=Dog}

sortedMap [inclusive is false] : {30=Apple, 40=Ball, 50=Dog}

sortedMap [inclusive is true] : {20=Eagle, 30=Apple, 40=Ball, 50=Dog}
To Download TreeMapDemoTailMapInclusive Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeMapDemoTailMapInclusive.zip?attredirects=0&d=1

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