Get Set view of Keys from Java TreeMap : TreeMap « Collections Data Structure « Java

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Java » Collections Data Structure » TreeMap

Get Set view of Keys from Java TreeMap


 



import java.util.Iterator;

import java.util.TreeMap;

import java.util.Set;

public class Main {

  public static void main(String[] args) {

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

    treeMap.put("1", "One");

    treeMap.put("3", "Three");

    treeMap.put("2", "Two");



    Set st = treeMap.keySet();

    Iterator itr = st.iterator();

    while (itr.hasNext()){

      System.out.println(itr.next());

    }

    st.remove("1");



    System.out.println(treeMap.containsKey("1"));

  }

}

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