src/jdk.compiler/share/classes/com/sun/tools/javac/code/Source.java

*** 77,87 ****
  
      /** 1.9 modularity. */
      JDK9("9"),
  
      /** 1.10 covers the to be determined language features that will be added in JDK 10. */
!     JDK10("10");
  
      private static final Context.Key<Source> sourceKey = new Context.Key<>();
  
      public static Source instance(Context context) {
          Source instance = context.get(sourceKey);
--- 77,90 ----
  
      /** 1.9 modularity. */
      JDK9("9"),
  
      /** 1.10 covers the to be determined language features that will be added in JDK 10. */
!     JDK10("10"),
! 
!     /** 1.11 covers the to be determined language features that will be added in JDK 11. */
!     JDK11("11");
  
      private static final Context.Key<Source> sourceKey = new Context.Key<>();
  
      public static Source instance(Context context) {
          Source instance = context.get(sourceKey);
*** 106,115 ****
--- 109,119 ----
          tab.put("1.6", JDK6); // Make 6 an alias for 1.6
          tab.put("1.7", JDK7); // Make 7 an alias for 1.7
          tab.put("1.8", JDK8); // Make 8 an alias for 1.8
          tab.put("1.9", JDK9); // Make 9 an alias for 1.9
          tab.put("1.10", JDK10); // Make 10 an alias for 1.10
+         // Decline to make 1.11 an alias for 11.
      }
  
      private Source(String name) {
          this.name = name;
      }
*** 123,132 ****
--- 127,137 ----
      public static Source lookup(String name) {
          return tab.get(name);
      }
  
      public Target requiredTarget() {
+         if (this.compareTo(JDK11) >= 0) return Target.JDK1_11;
          if (this.compareTo(JDK10) >= 0) return Target.JDK1_10;
          if (this.compareTo(JDK9) >= 0) return Target.JDK1_9;
          if (this.compareTo(JDK8) >= 0) return Target.JDK1_8;
          if (this.compareTo(JDK7) >= 0) return Target.JDK1_7;
          if (this.compareTo(JDK6) >= 0) return Target.JDK1_6;
*** 245,254 ****
--- 250,261 ----
              return RELEASE_8;
          case JDK9:
              return RELEASE_9;
          case JDK10:
              return RELEASE_10;
+         case JDK11:
+             return RELEASE_11;
          default:
              return null;
          }
      }
  }