Get lowest and highest key stored in Java TreeMap : TreeMap « Collections Data Structure « Java

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Java » Collections Data Structure » TreeMap

Get lowest and highest key stored in Java TreeMap


 



import java.util.TreeMap;



public class Main {

  public static void main(String[] args) {

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

    treeMap.put("1", "One");

    treeMap.put("2", "Two");

    treeMap.put("3", "Three");    

    treeMap.put("4", "Four");

    treeMap.put("5", "Five");



    System.out.println("Lowest key: " + treeMap.firstKey());

    System.out.println("Highest key: " + treeMap.lastKey());

  }

}

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