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

@@ -68,12 +68,15 @@
     JDK1_7("1.7"),
 
     /** 1.8 lambda expressions and default methods. */
     JDK1_8("1.8"),
 
-    /** 1.9 covers the to be determined language features that will be added in JDK 9. */
-    JDK1_9("1.9");
+    /** 1.9 modularity. */
+    JDK1_9("1.9"),
+
+    /** 1.10 covers the to be determined language features that will be added in JDK 10. */
+    JDK1_10("1.10");
 
     private static final Context.Key<Source> sourceKey = new Context.Key<>();
 
     public static Source instance(Context context) {
         Source instance = context.get(sourceKey);

@@ -97,10 +100,11 @@
         tab.put("5", JDK1_5); // Make 5 an alias for 1.5
         tab.put("6", JDK1_6); // Make 6 an alias for 1.6
         tab.put("7", JDK1_7); // Make 7 an alias for 1.7
         tab.put("8", JDK1_8); // Make 8 an alias for 1.8
         tab.put("9", JDK1_9); // Make 9 an alias for 1.9
+        tab.put("10", JDK1_10); // Make 10 an alias for 1.10
     }
 
     private Source(String name) {
         this.name = name;
     }

@@ -114,10 +118,11 @@
     public static Source lookup(String name) {
         return tab.get(name);
     }
 
     public Target requiredTarget() {
+        if (this.compareTo(JDK1_10) >= 0) return Target.JDK1_10;
         if (this.compareTo(JDK1_9) >= 0) return Target.JDK1_9;
         if (this.compareTo(JDK1_8) >= 0) return Target.JDK1_8;
         if (this.compareTo(JDK1_7) >= 0) return Target.JDK1_7;
         if (this.compareTo(JDK1_6) >= 0) return Target.JDK1_6;
         if (this.compareTo(JDK1_5) >= 0) return Target.JDK1_5;

@@ -238,10 +243,12 @@
             return RELEASE_7;
         case JDK1_8:
             return RELEASE_8;
         case JDK1_9:
             return RELEASE_9;
+        case JDK1_10:
+            return RELEASE_10;
         default:
             return null;
         }
     }
 }