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TreeMapExample.java

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package collection.Map;

import java.util.Map;

import java.util.TreeMap;

/*

Value Associated with key 'two'= 2

Keysets: [one, seven, six, two]

Entry of map: [one=1, seven=7, six=6, two=2]

Size of map: 4

one : 1

{one=1, seven=7, six=6, two=2}

*/

public class TreeMapExample {

public static void main(String[] args) {

Map<String,Integer> m=new TreeMap<>();

//Treemap sorts according to key

m.put("six", 6);

m.put("one", 1);

m.put("two", 2);

m.put("seven", 7);

System.out.print("Value Associated with key 'two'= "+m.get("two")+"\n");

System.out.print("Keysets: "+m.keySet()+"\n");

System.out.print("Entry of map: "+m.entrySet()+"\n");

System.out.println("Size of map: "+m.size());

if(m.containsKey("one")) {

Integer x=m.get("one");

System.out.println("one : "+x);

}

if(!m.isEmpty())

System.out.println(m);

}

}