Java TreeMap Set View Of Keys
Chapter:
Collections
Last Updated:
13-05-2016 20:06:46 UTC
Program:
/* ............... START ............... */
import java.util.Iterator;
import java.util.TreeMap;
import java.util.Set;
public class JavaTreeMapSetView {
public static void main(String[] args) {
TreeMap treeMap = new TreeMap();
treeMap.put("1", "One");
treeMap.put("3", "Three");
treeMap.put("2", "Two");
Set set = treeMap.keySet();
System.out.println("Set created from TreeMap Keys contains :");
Iterator iterator = set.iterator();
while (iterator.hasNext())
System.out.println(iterator.next());
set.remove("1");
boolean blnExists = treeMap.containsKey("1");
System.out.println("Does TreeMap contain 1 ? " + blnExists);
}
}
/* ............... END ............... */
Output
Set created from TreeMap Keys contains :
1
2
3
Does TreeMap contain 1 ? false
Tags
Collection, TreeMap Set View Of Keys, Java