Remove unnecessary "throws" declarations

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=201058582

java/google/registry/tools/AllocateDomainCommand.java

@@ -63,7 +63,7 @@ final class AllocateDomainCommand extends MutatingEppToolCommand {
   private final List<Key<DomainApplication>> applicationKeys = new ArrayList<>();
 
   @Override
-  protected String postExecute() throws Exception {
+  protected String postExecute() {
     return ofy()
         .transactNewReadOnly(
             () -> {

java/google/registry/tools/AppEngineConnection.java

@@ -65,7 +65,7 @@ class AppEngineConnection implements Connection {
       memoize(() -> xsrfTokenManager.generateToken(getUserId()));
 
   @Override
-  public void prefetchXsrfToken() throws IOException {
+  public void prefetchXsrfToken() {
     // Cause XSRF token to be fetched, and then stay resident in cache (since it's memoized).
     xsrfToken.get();
   }

java/google/registry/tools/CheckSnapshotCommand.java

@@ -34,7 +34,7 @@ public class CheckSnapshotCommand implements RemoteApiCommand {
   private String snapshotName;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     Iterable<DatastoreBackupInfo> backups =
         DatastoreBackupService.get().findAllByNamePrefix(snapshotName);
     if (Iterables.isEmpty(backups)) {

java/google/registry/tools/CompareDbBackups.java

@@ -22,7 +22,7 @@ import java.io.File;
 /** Compare two database backups. */
 class CompareDbBackups {
 
-  public static void main(String[] args) throws Exception {
+  public static void main(String[] args) {
     if (args.length != 2) {
       System.err.println("Usage: compare_db_backups <directory1> <directory2>");
       return;

java/google/registry/tools/ConfirmingCommand.java

@@ -71,7 +71,7 @@ public abstract class ConfirmingCommand implements Command {
    * Perform any post-execution steps (e.g. verifying the result), and return a description String
    * to be printed if non-empty.
    */
-  protected String postExecute() throws Exception {
+  protected String postExecute() {
     return "";
   }
 

java/google/registry/tools/ConvertIdnCommand.java

@@ -21,7 +21,6 @@ import com.beust.jcommander.Parameter;
 import com.beust.jcommander.Parameters;
 import com.google.common.base.Ascii;
 import google.registry.util.Idn;
-import java.io.IOException;
 import java.util.List;
 
 /** Command to convert IDN labels to/from punycode. */
@@ -34,7 +33,7 @@ final class ConvertIdnCommand implements Command {
   private List<String> mainParameters;
 
   @Override
-  public void run() throws IOException {
+  public void run() {
     for (String label : mainParameters) {
       if (label.startsWith(ACE_PREFIX)) {
         System.out.println(Idn.toUnicode(Ascii.toLowerCase(label)));

java/google/registry/tools/CreateCdnsTld.java

@@ -62,7 +62,7 @@ class CreateCdnsTld extends ConfirmingCommand {
   private ManagedZone managedZone;
 
   @Override
-  protected void init() throws IOException, GeneralSecurityException {
+  protected void init() {
     managedZone =
         new ManagedZone()
             .setDescription(description)

java/google/registry/tools/CreateCreditBalanceCommand.java

@@ -56,7 +56,7 @@ final class CreateCreditBalanceCommand extends MutatingCommand {
   private DateTime effectiveTime;
 
   @Override
-  public void init() throws Exception {
+  public void init() {
     Registrar registrar =
         checkArgumentPresent(
             Registrar.loadByClientId(clientId), "Registrar %s not found", clientId);

java/google/registry/tools/CreateCreditCommand.java

@@ -68,7 +68,7 @@ final class CreateCreditCommand extends MutatingCommand {
   private DateTime effectiveTime;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     DateTime now = DateTime.now(UTC);
     Registrar registrar =
         checkArgumentPresent(

java/google/registry/tools/CreateOrUpdatePremiumListCommand.java

@@ -81,7 +81,7 @@ abstract class CreateOrUpdatePremiumListCommand extends ConfirmingCommand
   }
 
   @Override
-  protected String prompt() throws Exception {
+  protected String prompt() {
     return String.format(
         "You are about to save the premium list %s with %d items: ", name, inputLineCount);
   }

java/google/registry/tools/CreateOrUpdateRegistrarCommand.java

@@ -272,7 +272,7 @@ abstract class CreateOrUpdateRegistrarCommand extends MutatingCommand {
   @Nullable
   abstract Registrar getOldRegistrar(String clientId);
 
-  protected void initRegistrarCommand() throws Exception {}
+  protected void initRegistrarCommand() {}
 
   @Override
   protected final void init() throws Exception {

java/google/registry/tools/CreateOrUpdateTldCommand.java

@@ -269,7 +269,7 @@ abstract class CreateOrUpdateTldCommand extends MutatingCommand {
   /** Subclasses can override this to assert that the command can be run in this environment. */
   void assertAllowedEnvironment() {}
 
-  protected abstract void initTldCommand() throws Exception;
+  protected abstract void initTldCommand();
 
   @Override
   protected final void init() throws Exception {

java/google/registry/tools/CreateRegistrarCommand.java

@@ -58,7 +58,7 @@ final class CreateRegistrarCommand extends CreateOrUpdateRegistrarCommand
   }
 
   @Override
-  protected void initRegistrarCommand() throws Exception {
+  protected void initRegistrarCommand() {
     checkArgument(mainParameters.size() == 1, "Must specify exactly one client identifier.");
     checkArgumentNotNull(emptyToNull(password), "--password is a required field");
     checkArgumentNotNull(registrarName, "--name is a required field");
@@ -95,7 +95,7 @@ final class CreateRegistrarCommand extends CreateOrUpdateRegistrarCommand
   }
 
   @Override
-  protected String postExecute() throws Exception {
+  protected String postExecute() {
     if (!createGoogleGroups) {
       return "";
     }

java/google/registry/tools/CreateRegistrarGroupsCommand.java

@@ -49,7 +49,7 @@ public class CreateRegistrarGroupsCommand extends ConfirmingCommand
   }
 
   @Override
-  protected void init() throws IOException {
+  protected void init() {
     for (String clientId : clientIds) {
       Registrar registrar =
           checkArgumentPresent(

java/google/registry/tools/CreateTldCommand.java

@@ -53,7 +53,7 @@ class CreateTldCommand extends CreateOrUpdateTldCommand {
   private Money initialRenewBillingCost;
 
   @Override
-  protected void initTldCommand() throws Exception {
+  protected void initTldCommand() {
     checkArgument(initialTldState == null || tldStateTransitions.isEmpty(),
         "Don't pass both --initial_tld_state and --tld_state_transitions");
     checkArgument(initialRenewBillingCost == null || renewBillingCostTransitions.isEmpty(),

java/google/registry/tools/DeleteCreditCommand.java

@@ -41,7 +41,7 @@ final class DeleteCreditCommand extends MutatingCommand {
   private long creditId;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     Registrar registrar =
         checkArgumentPresent(
             Registrar.loadByClientId(clientId), "Registrar %s not found", clientId);

java/google/registry/tools/DeletePremiumListCommand.java

@@ -43,7 +43,7 @@ final class DeletePremiumListCommand extends ConfirmingCommand implements Remote
   private String name;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     checkArgument(
         doesPremiumListExist(name),
         "Cannot delete the premium list %s because it doesn't exist.",
@@ -62,7 +62,7 @@ final class DeletePremiumListCommand extends ConfirmingCommand implements Remote
   }
 
   @Override
-  protected String execute() throws Exception {
+  protected String execute() {
     deletePremiumList(premiumList);
     return String.format("Deleted premium list '%s'.\n", premiumList.getName());
   }

java/google/registry/tools/DeleteReservedListCommand.java

@@ -36,7 +36,7 @@ final class DeleteReservedListCommand extends MutatingCommand {
   private String name;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     checkArgument(
         ReservedList.get(name).isPresent(),
         "Cannot delete the reserved list %s because it doesn't exist.",

java/google/registry/tools/DeleteTldCommand.java

@@ -52,7 +52,7 @@ final class DeleteTldCommand extends ConfirmingCommand implements RemoteApiComma
    * accidental deletion of established TLDs with domains on them.
    */
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     registry = Registry.get(tld);
     checkState(registry.getTldType().equals(TldType.TEST), "Cannot delete a real TLD");
 
@@ -77,7 +77,7 @@ final class DeleteTldCommand extends ConfirmingCommand implements RemoteApiComma
   }
 
   @Override
-  protected String execute() throws Exception {
+  protected String execute() {
     ofy().transactNew(new VoidWork() {
       @Override
       public void vrun() {

java/google/registry/tools/DeployInvoicingPipelineCommand.java

@@ -25,7 +25,7 @@ public class DeployInvoicingPipelineCommand implements Command {
   @Inject InvoicingPipeline invoicingPipeline;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     invoicingPipeline.deploy();
   }
 }

java/google/registry/tools/GenerateAllocationTokensCommand.java

@@ -72,7 +72,7 @@ public class GenerateAllocationTokensCommand implements RemoteApiCommand {
   private static final int BATCH_SIZE = 20;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     int tokensSaved = 0;
     do {
       ImmutableSet<AllocationToken> tokens =

java/google/registry/tools/GenerateEscrowDepositCommand.java

@@ -79,7 +79,7 @@ final class GenerateEscrowDepositCommand implements RemoteApiCommand {
   @Inject @Named("rde-report") Queue queue;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
 
     if (tlds.isEmpty()) {
       throw new ParameterException("At least one TLD must be specified");

java/google/registry/tools/GetLrpTokenCommand.java

@@ -47,7 +47,7 @@ public final class GetLrpTokenCommand implements RemoteApiCommand {
   private boolean includeHistory = false;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     checkArgument(
         (tokenString == null) == (assignee != null),
         "Exactly one of either token or assignee must be specified.");

java/google/registry/tools/GetSchemaCommand.java

@@ -21,7 +21,7 @@ import google.registry.model.SchemaVersion;
 @Parameters(commandDescription = "Generate a model schema file")
 final class GetSchemaCommand implements Command {
   @Override
-  public void run() throws Exception {
+  public void run() {
     System.out.println(SchemaVersion.getSchema());
   }
 }

java/google/registry/tools/GetSchemaTreeCommand.java

@@ -51,7 +51,7 @@ final class GetSchemaTreeCommand implements Command {
   private Multimap<Class<?>, Class<?>> superclassToSubclasses;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     // Get the @Parent type for each class.
     Map<Class<?>, Class<?>> entityToParentType = new HashMap<>();
     for (Class<?> clazz : ALL_CLASSES) {

java/google/registry/tools/HelpCommand.java

@@ -36,7 +36,7 @@ final class HelpCommand implements Command {
   private List<String> mainParameters = new ArrayList<>();
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     String target = getOnlyElement(mainParameters, null);
     if (target == null) {
       jcommander.usage();

java/google/registry/tools/ListCursorsCommand.java

@@ -49,7 +49,7 @@ final class ListCursorsCommand implements RemoteApiCommand {
   private boolean filterEscrowEnabled;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     List<String> lines = new ArrayList<>();
     for (String tld : Registries.getTlds()) {
       Registry registry = Registry.get(tld);

java/google/registry/tools/LoadTestCommand.java

@@ -84,7 +84,7 @@ class LoadTestCommand extends ConfirmingCommand implements ServerSideCommand {
   }
 
   @Override
-  protected boolean checkExecutionState() throws Exception {
+  protected boolean checkExecutionState() {
     if (RegistryToolEnvironment.get() == RegistryToolEnvironment.PRODUCTION) {
       System.err.println("You may not run a load test against production.");
       return false;

java/google/registry/tools/LockDomainCommand.java

@@ -41,7 +41,7 @@ public class LockDomainCommand extends LockOrUnlockDomainCommand {
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
 
   @Override
-  protected void initMutatingEppToolCommand() throws Exception {
+  protected void initMutatingEppToolCommand() {
     // Project all domains as of the same time so that argument order doesn't affect behavior.
     DateTime now = DateTime.now(UTC);
     for (String domain : getDomains()) {

java/google/registry/tools/MutatingEppToolCommand.java

@@ -30,7 +30,7 @@ public abstract class MutatingEppToolCommand extends EppToolCommand {
   boolean dryRun;
 
   @Override
-  protected boolean checkExecutionState() throws Exception {
+  protected boolean checkExecutionState() {
     checkArgument(!(force && isDryRun()), "--force and --dry_run are incompatible");
     return true;
   }

java/google/registry/tools/PendingEscrowCommand.java

@@ -43,7 +43,7 @@ final class PendingEscrowCommand implements RemoteApiCommand {
   PendingDepositChecker checker;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     System.out.println(
         SORTER
             .sortedCopy(checker.getTldsAndWatermarksPendingDepositForRdeAndBrda().values())

java/google/registry/tools/ResaveEntitiesCommand.java

@@ -41,7 +41,7 @@ public final class ResaveEntitiesCommand extends MutatingCommand {
   List<String> mainParameters;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     for (List<String> batch : partition(mainParameters, BATCH_SIZE)) {
       for (String websafeKey : batch) {
         ImmutableObject entity = ofy().load().key(Key.<ImmutableObject>create(websafeKey)).now();

java/google/registry/tools/ResaveEnvironmentEntitiesCommand.java

@@ -37,7 +37,7 @@ final class ResaveEnvironmentEntitiesCommand implements RemoteApiCommand {
   private static final int BATCH_SIZE = 10;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     batchSave(Registry.class);
     batchSave(Registrar.class);
     batchSave(RegistrarContact.class);

java/google/registry/tools/ResaveEppResourceCommand.java

@@ -47,7 +47,7 @@ public final class ResaveEppResourceCommand extends MutatingCommand {
   protected String uniqueId;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     Key<? extends EppResource> resourceKey = checkArgumentNotNull(
         type.getKey(uniqueId, DateTime.now(UTC)),
         "Could not find active resource of type %s: %s", type, uniqueId);

java/google/registry/tools/ServerSideCommand.java

@@ -25,7 +25,7 @@ interface ServerSideCommand extends RemoteApiCommand {
   /** An http connection to AppEngine. */
   interface Connection {
 
-    void prefetchXsrfToken() throws IOException;
+    void prefetchXsrfToken();
 
     String send(String endpoint, Map<String, ?> params, MediaType contentType, byte[] payload)
         throws IOException;

java/google/registry/tools/SetupOteCommand.java

@@ -221,7 +221,7 @@ final class SetupOteCommand extends ConfirmingCommand implements RemoteApiComman
   }
 
   @Override
-  protected String prompt() throws Exception {
+  protected String prompt() {
     // Each underlying command will confirm its own operation as well, so just provide
     // a summary of the steps in this command.
     if (eapOnly) {

java/google/registry/tools/ShellCommand.java

@@ -248,7 +248,7 @@ public class ShellCommand implements Command {
    *
    * <p>Dumps the last line of output prior to doing this.
    */
-  private void emitSuccess() throws IOException {
+  private void emitSuccess() {
     System.out.println(SUCCESS);
     System.out.flush();
   }
@@ -258,7 +258,7 @@ public class ShellCommand implements Command {
    *
    * <p>Dumps the last line of output prior to doing this.
    */
-  private void emitFailure(Throwable e) throws IOException {
+  private void emitFailure(Throwable e) {
     System.out.println(
         FAILURE
             + e.getClass().getName()

java/google/registry/tools/UniformRapidSuspensionCommand.java

@@ -100,7 +100,7 @@ final class UniformRapidSuspensionCommand extends MutatingEppToolCommand {
   ImmutableSortedSet<String> existingDsData;
 
   @Override
-  protected void initMutatingEppToolCommand() throws ParseException {
+  protected void initMutatingEppToolCommand() {
     superuser = true;
     DateTime now = DateTime.now(UTC);
     ImmutableSet<String> newHostsSet = ImmutableSet.copyOf(newHosts);
@@ -176,7 +176,7 @@ final class UniformRapidSuspensionCommand extends MutatingEppToolCommand {
   }
 
   @Override
-  protected String postExecute() throws Exception {
+  protected String postExecute() {
     if (undo) {
       return "";
     }

java/google/registry/tools/UnlockDomainCommand.java

@@ -41,7 +41,7 @@ public class UnlockDomainCommand extends LockOrUnlockDomainCommand {
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
 
   @Override
-  protected void initMutatingEppToolCommand() throws Exception {
+  protected void initMutatingEppToolCommand() {
     // Project all domains as of the same time so that argument order doesn't affect behavior.
     DateTime now = DateTime.now(UTC);
     for (String domain : getDomains()) {

java/google/registry/tools/UpdateApplicationStatusCommand.java

@@ -65,7 +65,7 @@ final class UpdateApplicationStatusCommand extends MutatingCommand {
   private String clientId = "CharlestonRoad";
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     checkArgumentPresent(
         Registrar.loadByClientId(clientId), "Registrar with client ID %s not found", clientId);
     for (final String applicationId : ids) {

java/google/registry/tools/UpdateClaimsNoticeCommand.java

@@ -62,7 +62,7 @@ final class UpdateClaimsNoticeCommand implements RemoteApiCommand {
   private String acceptedTime;
 
   @Override
-  public void run() throws Exception {
+  public void run() {
     final LaunchNotice launchNotice = LaunchNotice.create(
         tcnId, validatorId, DateTime.parse(expirationTime), DateTime.parse(acceptedTime));
 

java/google/registry/tools/UpdateCursorsCommand.java

@@ -47,7 +47,7 @@ final class UpdateCursorsCommand extends MutatingCommand {
   private DateTime newTimestamp;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     if (isNullOrEmpty(tlds)) {
       Cursor cursor = ofy().load().key(Cursor.createGlobalKey(cursorType)).now();
       stageEntityChange(cursor, Cursor.createGlobal(cursorType, newTimestamp));

java/google/registry/tools/UpdateTldCommand.java

@@ -127,7 +127,7 @@ class UpdateTldCommand extends CreateOrUpdateTldCommand {
   }
 
   @Override
-  protected void initTldCommand() throws Exception {
+  protected void initTldCommand() {
     // Due to per-instance caching on Registry, different instances can end up in different TLD
     // states at the same time, so --set_current_tld_state should never be used in production.
     checkArgument(

java/google/registry/tools/UploadClaimsListCommand.java

@@ -51,12 +51,12 @@ final class UploadClaimsListCommand extends ConfirmingCommand implements RemoteA
   }
 
   @Override
-  protected String prompt() throws Exception {
+  protected String prompt() {
     return String.format("\nNew claims list:\n%s", claimsList);
   }
 
   @Override
-  public String execute() throws IOException {
+  public String execute() {
     claimsList.save();
     return String.format("Successfully uploaded claims list %s", claimsListFilename);
   }

java/google/registry/tools/javascrap/PopulateNullRegistrarFieldsCommand.java

@@ -38,7 +38,7 @@ import java.util.Objects;
 public class PopulateNullRegistrarFieldsCommand extends MutatingCommand {
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     for (Registrar registrar : ofy().load().type(Registrar.class).ancestor(getCrossTldKey())) {
       Builder changeBuilder = registrar.asBuilder();
       changeBuilder.setRegistrarName(