import org.ehcache.Cache; import org.ehcache.config.builders.CacheConfigurationBuilder; import org.ehcache.config.builders.ResourcePoolsBuilder; import org.ehcache.core.EhcacheManagerBuilder; CacheManager cacheManager = EhcacheManagerBuilder.newCacheManagerBuilder().build(); cacheManager.init(); CacheConfiguration<Long, String> cacheConfiguration = CacheConfigurationBuilder .newCacheConfigurationBuilder(Long.class, String.class, ResourcePoolsBuilder.heap(100)) .build(); Cache<Long, String> cache = cacheManager.createCache("myCache", cacheConfiguration); cache.put(1L, "Hello, World!"); String value = cache.get(1L); System.out.println(value); cacheManager.close();