Use treemap : HashTable Map « Collections Data Structure « Java






Use treemap

Use treemap
     

import java.util.Map;
import java.util.TreeMap;

public class Freq {
  private static final Integer ONE = new Integer(1);

  public static void main(String args[]) {
    Map m = new TreeMap();

    m.put("a Key", "a Value");
    m.put("Java2s", "www.java2s.com");

    System.out.println(m.size() + " keys detected:");
    System.out.println(m);
  }
}


           
         
    
    
    
    
  








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