Java tutorial
package org.springframework.security.oauth2.provider.code; import java.util.concurrent.ConcurrentHashMap; import org.springframework.security.oauth2.provider.OAuth2Authentication; /** * Implementation of authorization code services that stores the codes and authentication in memory. * * @author Ryan Heaton * @author Dave Syer */ public class InMemoryAuthorizationCodeServices extends RandomValueAuthorizationCodeServices { protected final ConcurrentHashMap<String, OAuth2Authentication> authorizationCodeStore = new ConcurrentHashMap<String, OAuth2Authentication>(); @Override protected void store(String code, OAuth2Authentication authentication) { this.authorizationCodeStore.put(code, authentication); } @Override public OAuth2Authentication remove(String code) { OAuth2Authentication auth = this.authorizationCodeStore.remove(code); return auth; } }