diff --git a/.gitignore b/.gitignore
index 5ab777d..f8e63ba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,8 @@ target/
 build/
 bin/
 *.iml
-.gradle/
\ No newline at end of file
+.gradle/
+.classpath
+.DS_Store
+.project
+.settings
\ No newline at end of file
diff --git a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosAuthenticationProvider.java b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosAuthenticationProvider.java
index 2c0b746..9558037 100644
--- a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosAuthenticationProvider.java
+++ b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosAuthenticationProvider.java
@@ -19,7 +19,6 @@ package org.springframework.security.extensions.kerberos;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.springframework.security.authentication.AuthenticationProvider;
-import org.springframework.security.authentication.BadCredentialsException;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.AuthenticationException;
diff --git a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosServiceAuthenticationProvider.java b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosServiceAuthenticationProvider.java
index 27898e6..2868c48 100644
--- a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosServiceAuthenticationProvider.java
+++ b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosServiceAuthenticationProvider.java
@@ -77,7 +77,6 @@ public class KerberosServiceAuthenticationProvider implements
     /* (non-Javadoc)
      * @see org.springframework.security.authentication.AuthenticationProvider#authenticate(org.springframework.security.core.Authentication)
      */
-    @Override
     public Authentication authenticate(Authentication authentication)
             throws AuthenticationException {
         KerberosServiceRequestToken auth = (KerberosServiceRequestToken) authentication;
@@ -109,7 +108,6 @@ public class KerberosServiceAuthenticationProvider implements
     /* (non-Javadoc)
      * @see org.springframework.security.authentication.AuthenticationProvider#supports(java.lang.Class)
      */
-    @Override
     public boolean supports(Class<? extends Object> auth) {
         return KerberosServiceRequestToken.class.isAssignableFrom(auth);
     }
@@ -117,7 +115,6 @@ public class KerberosServiceAuthenticationProvider implements
     /* (non-Javadoc)
      * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
      */
-    @Override
     public void afterPropertiesSet() throws Exception {
         Assert.notNull(this.ticketValidator, "ticketValidator must be specified");
         Assert.notNull(this.userDetailsService, "userDetailsService must be specified");
diff --git a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosServiceRequestToken.java b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosServiceRequestToken.java
index f083a2c..907ea0e 100644
--- a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosServiceRequestToken.java
+++ b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/KerberosServiceRequestToken.java
@@ -102,7 +102,6 @@ public class KerberosServiceRequestToken extends AbstractAuthenticationToken {
     /* (non-Javadoc)
      * @see org.springframework.security.core.Authentication#getCredentials()
      */
-    @Override
     public Object getCredentials() {
         return null;
     }
@@ -110,7 +109,6 @@ public class KerberosServiceRequestToken extends AbstractAuthenticationToken {
     /* (non-Javadoc)
      * @see org.springframework.security.core.Authentication#getPrincipal()
      */
-    @Override
     public Object getPrincipal() {
         return this.principal;
     }
diff --git a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/SunJaasKerberosClient.java b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/SunJaasKerberosClient.java
index c402319..af99648 100644
--- a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/SunJaasKerberosClient.java
+++ b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/SunJaasKerberosClient.java
@@ -50,7 +50,6 @@ public class SunJaasKerberosClient implements KerberosClient {
 
     private static final Log LOG = LogFactory.getLog(SunJaasKerberosClient.class);
 
-    @Override
     public String login(String username, String password) {
         LOG.debug("Trying to authenticate " + username + " with Kerberos");
         String validatedUsername;
@@ -106,7 +105,6 @@ public class SunJaasKerberosClient implements KerberosClient {
             this.password = password;
         }
 
-        @Override
         public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
             for (Callback callback : callbacks) {
                 if (callback instanceof NameCallback) {
diff --git a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/SunJaasKerberosTicketValidator.java b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/SunJaasKerberosTicketValidator.java
index dc461a1..da1a725 100644
--- a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/SunJaasKerberosTicketValidator.java
+++ b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/SunJaasKerberosTicketValidator.java
@@ -109,7 +109,6 @@ public class SunJaasKerberosTicketValidator implements KerberosTicketValidator,
     /* (non-Javadoc)
      * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
      */
-    @Override
     public void afterPropertiesSet() throws Exception {
         Assert.notNull(this.servicePrincipal, "servicePrincipal must be specified");
         Assert.notNull(this.keyTabLocation, "keyTab must be specified");
@@ -140,7 +139,6 @@ public class SunJaasKerberosTicketValidator implements KerberosTicketValidator,
             this.kerberosTicket = kerberosTicket;
         }
 
-        @Override
         public String run() throws Exception {
             GSSContext context = GSSManager.getInstance().createContext((GSSCredential) null);
             context.acceptSecContext(kerberosTicket, 0, kerberosTicket.length);
diff --git a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/web/SpnegoEntryPoint.java b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/web/SpnegoEntryPoint.java
index 03ff25b..2e3a2d5 100644
--- a/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/web/SpnegoEntryPoint.java
+++ b/spring-security-kerberos-core/src/main/java/org/springframework/security/extensions/kerberos/web/SpnegoEntryPoint.java
@@ -42,7 +42,6 @@ public class SpnegoEntryPoint implements AuthenticationEntryPoint {
     /* (non-Javadoc)
      * @see org.springframework.security.web.AuthenticationEntryPoint#commence(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, org.springframework.security.core.AuthenticationException)
      */
-    @Override
     public void commence(HttpServletRequest request, HttpServletResponse response,
             AuthenticationException ex) throws IOException, ServletException {
         if (LOG.isDebugEnabled()) {
diff --git a/spring-security-kerberos-sample/src/main/java/org/springframework/security/extensions/kerberos/sample/DummyUserDetailsService.java b/spring-security-kerberos-sample/src/main/java/org/springframework/security/extensions/kerberos/sample/DummyUserDetailsService.java
index 1ae6296..ce8dbfd 100644
--- a/spring-security-kerberos-sample/src/main/java/org/springframework/security/extensions/kerberos/sample/DummyUserDetailsService.java
+++ b/spring-security-kerberos-sample/src/main/java/org/springframework/security/extensions/kerberos/sample/DummyUserDetailsService.java
@@ -39,7 +39,6 @@ public class DummyUserDetailsService implements UserDetailsService {
 	/* (non-Javadoc)
 	 * @see org.springframework.security.core.userdetails.UserDetailsService#loadUserByUsername(java.lang.String)
 	 */
-	@Override
 	public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException {
 		return new User(username, "notUsed", true, true,true,true, AuthorityUtils.createAuthorityList("ROLE_USER"));
 	}