Java.util.LinkedHashMap.removeEldestEntry() 方法

package com.codingdict;

import java.util.*;

public class LinkedHashMapDemo {
   private static final int MAX_ENTRIES = 5;

   public static void main(String[] args) {

      LinkedHashMap<Integer, String> lhm = new LinkedHashMap<Integer,
      String>(MAX_ENTRIES + 1, .75F, false) {
         protected boolean removeEldestEntry(Map.Entry<Integer, String> eldest) {
            return size() > MAX_ENTRIES;
         }
      };
      lhm.put(0, "H");
      lhm.put(1, "E");
      lhm.put(2, "L");
      lhm.put(3, "L");
      lhm.put(4, "O");

      System.out.println("" + lhm);
   }
}