Replace custom eq methods with Objects.equals

Change-Id: Ia167b23754de6f33d4d6a105accbc14e444cc98a
Signed-off-by: Edwin Kempin <ekempin@google.com>

java/com/google/gerrit/pgm/init/api/Section.java

@@ -23,6 +23,7 @@ import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.EnumSet;
+import java.util.Objects;
 import java.util.Set;
 
 /** Helper to edit a section of the configuration files. */
@@ -100,7 +101,7 @@ public class Section {
     if (nullIfDefault && nv.equals(dv)) {
       nv = null;
     }
-    if (!eq(ov, nv)) {
+    if (!Objects.equals(ov, nv)) {
       set(name, nv);
     }
     return nv;
@@ -148,7 +149,7 @@ public class Section {
   public String select(final String title, String name, String dv, Set<String> allowedValues) {
     final String ov = get(name);
     String nv = ui.readString(ov != null ? ov : dv, allowedValues, "%s", title);
-    if (!eq(ov, nv)) {
+    if (!Objects.equals(ov, nv)) {
       set(name, nv);
     }
     return nv;
@@ -177,7 +178,7 @@ public class Section {
     }
 
     final String nv = ui.password("%s's password", user);
-    if (!eq(ov, nv)) {
+    if (!Objects.equals(ov, nv)) {
       setSecure(password, nv);
     }
     return nv;
@@ -195,7 +196,7 @@ public class Section {
     }
 
     final String nv = ui.password("%s", prompt);
-    if (!eq(ov, nv)) {
+    if (!Objects.equals(ov, nv)) {
       setSecure(passwordKey, nv);
     }
     return nv;
@@ -216,11 +217,4 @@ public class Section {
   String getName() {
     return section;
   }
-
-  private static boolean eq(String a, String b) {
-    if (a == null && b == null) {
-      return true;
-    }
-    return a != null && a.equals(b);
-  }
 }

java/com/google/gerrit/server/account/AccountManager.java

@@ -49,6 +49,7 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.Consumer;
@@ -225,13 +226,13 @@ public class AccountManager {
 
     if (!realm.allowsEdit(AccountFieldName.FULL_NAME)
         && !Strings.isNullOrEmpty(who.getDisplayName())
-        && !eq(user.getAccount().getFullName(), who.getDisplayName())) {
+        && !Objects.equals(user.getAccount().getFullName(), who.getDisplayName())) {
       accountUpdates.add(u -> u.setFullName(who.getDisplayName()));
     }
 
     if (!realm.allowsEdit(AccountFieldName.USER_NAME)
         && who.getUserName() != null
-        && !eq(user.getUserName(), who.getUserName())) {
+        && !Objects.equals(user.getUserName(), who.getUserName())) {
       log.warn(
           String.format(
               "Not changing already set username %s to %s", user.getUserName(), who.getUserName()));
@@ -249,10 +250,6 @@ public class AccountManager {
     }
   }
 
-  private static boolean eq(String a, String b) {
-    return (a == null && b == null) || (a != null && a.equals(b));
-  }
-
   private AuthResult create(ReviewDb db, AuthRequest who)
       throws OrmException, AccountException, IOException, ConfigInvalidException {
     Account.Id newId = new Account.Id(sequences.nextAccountId());

java/com/google/gerrit/server/git/receive/ReceiveCommits.java

@@ -175,6 +175,7 @@ import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.Set;
 import java.util.concurrent.ExecutionException;
@@ -2445,7 +2446,8 @@ class ReceiveCommits {
       // or no parents were updated (rebase), else warn that only part
       // of the commit was modified.
       if (newCommit.getTree().equals(priorCommit.getTree())) {
-        boolean messageEq = eq(newCommit.getFullMessage(), priorCommit.getFullMessage());
+        boolean messageEq =
+            Objects.equals(newCommit.getFullMessage(), priorCommit.getFullMessage());
         boolean parentsEq = parentsEqual(newCommit, priorCommit);
         boolean authorEq = authorEqual(newCommit, priorCommit);
         ObjectReader reader = rp.getRevWalk().getObjectReader();
@@ -2723,18 +2725,8 @@ class ReceiveCommits {
       return false;
     }
 
-    return eq(aAuthor.getName(), bAuthor.getName())
-        && eq(aAuthor.getEmailAddress(), bAuthor.getEmailAddress());
-  }
-
-  static boolean eq(String a, String b) {
-    if (a == null && b == null) {
-      return true;
-    } else if (a == null || b == null) {
-      return false;
-    } else {
-      return a.equals(b);
-    }
+    return Objects.equals(aAuthor.getName(), bAuthor.getName())
+        && Objects.equals(aAuthor.getEmailAddress(), bAuthor.getEmailAddress());
   }
 
   private boolean validRefOperation(ReceiveCommand cmd) {