Some trivial typos
diff --git a/kerby-kerb/kerb-identity/src/main/java/org/apache/kerby/kerberos/kerb/identity/backend/AbstractIdentityBackend.java b/kerby-kerb/kerb-identity/src/main/java/org/apache/kerby/kerberos/kerb/identity/backend/AbstractIdentityBackend.java
index 753408a..78a8a54 100644
--- a/kerby-kerb/kerb-identity/src/main/java/org/apache/kerby/kerberos/kerb/identity/backend/AbstractIdentityBackend.java
+++ b/kerby-kerb/kerb-identity/src/main/java/org/apache/kerby/kerberos/kerb/identity/backend/AbstractIdentityBackend.java
@@ -294,7 +294,7 @@
 
         if (doGetIdentity(principalName) == null) {
             logger.error("Error occurred while deleting identity, principal "
-                    + principalName + " does not exists.");
+                    + principalName + " does not exist.");
             throw new KrbException("Principal does not exist.");
         }
 
diff --git a/kerby-kerb/kerb-server/src/main/java/org/apache/kerby/kerberos/kerb/server/request/KdcRequest.java b/kerby-kerb/kerb-server/src/main/java/org/apache/kerby/kerberos/kerb/server/request/KdcRequest.java
index 86f47e7..a2f009a 100644
--- a/kerby-kerb/kerb-server/src/main/java/org/apache/kerby/kerberos/kerb/server/request/KdcRequest.java
+++ b/kerby-kerb/kerb-server/src/main/java/org/apache/kerby/kerberos/kerb/server/request/KdcRequest.java
@@ -861,9 +861,7 @@
      * @return krb identity entry
      */
     protected KrbIdentity getEntry(String principal) throws KrbException {
-        KrbIdentity entry;
-        entry = kdcContext.getIdentityService().getIdentity(principal);
-        return entry;
+        return kdcContext.getIdentityService().getIdentity(principal);
     }
 
     /**
diff --git a/kerby-tool/kdc-tool/src/main/java/org/apache/kerby/kerberos/tool/kadmin/command/DeletePrincipalCommand.java b/kerby-tool/kdc-tool/src/main/java/org/apache/kerby/kerberos/tool/kadmin/command/DeletePrincipalCommand.java
index 0a2e146..fd8d447 100644
--- a/kerby-tool/kdc-tool/src/main/java/org/apache/kerby/kerberos/tool/kadmin/command/DeletePrincipalCommand.java
+++ b/kerby-tool/kdc-tool/src/main/java/org/apache/kerby/kerberos/tool/kadmin/command/DeletePrincipalCommand.java
@@ -68,7 +68,7 @@
             if (reply.equals("yes") || reply.equals("YES") || reply.equals("y") || reply.equals("Y")) {
                 deletePrincipal(getKadmin(), principal);
             } else if (reply.equals("no") || reply.equals("NO") || reply.equals("n") || reply.equals("N")) {
-                System.out.println("Pincipal \"" + principal + "\"  not deleted.");
+                System.out.println("Principal \"" + principal + "\"  not deleted.");
             } else {
                 System.err.println("Unknow request, fail to delete the principal.");
             }