8283711: Remove redundant 'new String' calls after concatenation

Reviewed-by: wetmore, vromero, xuelei

src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5MechFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2022, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -146,8 +146,7 @@ public final class Krb5MechFactory implements MechanismFactory {
         SecurityManager sm = System.getSecurityManager();
         if (sm != null) {
             String realm = (name.getKrb5PrincipalName()).getRealmAsString();
-            String tgsPrincipal =
-                new String("krbtgt/" + realm + '@' + realm);
+            String tgsPrincipal = "krbtgt/" + realm + '@' + realm;
             ServicePermission perm =
                 new ServicePermission(tgsPrincipal, "initiate");
             try {

src/java.security.jgss/share/classes/sun/security/krb5/EncryptionKey.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2022, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -497,13 +497,13 @@ public class EncryptionKey
     }
 
     public String toString() {
-        return new String("EncryptionKey: keyType=" + keyType
-                          + " kvno=" + kvno
-                          + " keyValue (hex dump)="
-                          + (keyValue == null || keyValue.length == 0 ?
-                        " Empty Key" : '\n'
-                        + Krb5.hexDumper.encodeBuffer(keyValue)
-                        + '\n'));
+        return "EncryptionKey: keyType=" + keyType
+                + " kvno=" + kvno
+                + " keyValue (hex dump)="
+                + (keyValue == null || keyValue.length == 0 ?
+                " Empty Key" : '\n'
+                + Krb5.hexDumper.encodeBuffer(keyValue)
+                + '\n');
     }
 
     /**

src/jdk.compiler/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2022, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -2054,7 +2054,7 @@ public class LambdaToMethod extends TreeTranslator {
                         };
                         break;
                     case CAPTURED_OUTER_THIS:
-                        Name name = names.fromString(new String(sym.flatName().toString().replace('.', '$') + names.dollarThis));
+                        Name name = names.fromString(sym.flatName().toString().replace('.', '$') + names.dollarThis);
                         ret = new VarSymbol(SYNTHETIC | FINAL | PARAMETER, name, types.erasure(sym.type), translatedSym) {
                             @Override
                             public Symbol baseSymbol() {