package org.checkerframework.javacutil;

import java.util.LinkedHashMap;
import java.util.Map;

/** Utility methods related to Java Collections. */
public class CollectionUtils {

  /**
   * Creates a LRU cache.
   *
   * @param size size of the cache
   * @return a new cache with the provided size
   */
  public static <K, V> Map<K, V> createLRUCache(final int size) {
    return new LinkedHashMap<K, V>(size, .75F, true) {

      private static final long serialVersionUID = 5261489276168775084L;

      @Override
      protected boolean removeEldestEntry(Map.Entry<K, V> entry) {
        return size() > size;
      }
    };
  }
}