fix checkstyle

Author: Sunny Jiao

framework/src/main/java/org/tron/core/Wallet.java

@@ -782,10 +782,12 @@ public WitnessList getPaginatedNowWitnessList(long offset, long limit) throws
 
     /*
       In the maintenance period, the VoteStores will be cleared.
-      To avoid the race condition of VoteStores deleted but Witness vote counts not updated, return retry error.
+      To avoid the race condition of VoteStores deleted but Witness vote counts not updated,
+      return retry error.
     */
     if (chainBaseManager.getDynamicPropertiesStore().getStateFlag() == 1) {
-      String message = "Service temporarily unavailable during maintenance period. Please try again later.";
+      String message = "Service temporarily unavailable during maintenance period. " +
+          "Please try again later.";
       throw new MaintenanceUnavailableException(message);
     }
     // It contains the final vote count at the end of the last epoch.

framework/src/test/java/org/tron/core/WalletTest.java

@@ -881,8 +881,7 @@ public void testGetPaginatedNowWitnessList_CornerCase() {
           witnessList == null);
 
       witnessList = wallet.getPaginatedNowWitnessList(100, 0);
-      Assert.assertTrue("Should return an empty witness list when limit is 0",
-          witnessList == null);
+      Assert.assertTrue("Should return an empty witness list when limit is 0", witnessList == null);
 
       String fakeWitnessAddressPrefix = "fake_witness";
       int fakeNumberOfWitnesses = 1000 + 10;
@@ -902,7 +901,7 @@ public void testGetPaginatedNowWitnessList_CornerCase() {
             .delete(ByteString.copyFromUtf8(fakeWitnessAddressPrefix + i).toByteArray());
       }
     } catch (MaintenanceUnavailableException e) {
-       Assert.fail(e.getMessage());
+      Assert.fail(e.getMessage());
     }
   }
 
@@ -936,7 +935,7 @@ public void testGetPaginatedNowWitnessList() {
 
     logger.info("now request paginated witness list with 0 offset and 10 limit:");
     GrpcAPI.WitnessList witnessList2 = null;
-     try {
+    try {
       // To avoid throw MaintenanceClearingException
       dbManager.getChainBaseManager().getDynamicPropertiesStore().saveStateFlag(0);
       witnessList2 = wallet.getPaginatedNowWitnessList(0, 10);