Java LinkedHashMap Set View Of Keys
Chapter:
Collections
Last Updated:
11-05-2016 18:30:44 UTC
Program:
/* ............... START ............... */
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Set;
public class JavaLinkedHashMapKeySetView {
public static void main(String[] args) {
LinkedHashMap linkedHashMap = new LinkedHashMap();
linkedHashMap.put("1", "One");
linkedHashMap.put("2", "Two");
linkedHashMap.put("3", "Three");
Set set = linkedHashMap.keySet();
System.out.println("Set created from LinkedHashMap Keys contains :");
// iterate through the Set of keys
Iterator itr = set.iterator();
while (itr.hasNext())
System.out.println(itr.next());
// remove 2 from Set
set.remove("2");
// check if original LinkedHashMap still contains 2
boolean blnExists = linkedHashMap.containsKey("2");
System.out.println("Does LinkedHashMap contain 2 : " + blnExists);
}
}
/* ............... END ............... */
Output
Set created from LinkedHashMap Keys contains :
1
2
3
Does LinkedHashMap contain 2 : false
Tags
Collection, LinkedHashMap Set View, Java