src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/Target.java

@@ -47,26 +47,26 @@
 
     /** J2SE1.4 = Merlin. */
     JDK1_4("1.4", 48, 0),
 
     /** JDK 5, codename Tiger. */
-    JDK1_5("1.5", 49, 0),
+    JDK1_5("5", 49, 0),
 
     /** JDK 6. */
-    JDK1_6("1.6", 50, 0),
+    JDK1_6("6", 50, 0),
 
     /** JDK 7. */
-    JDK1_7("1.7", 51, 0),
+    JDK1_7("7", 51, 0),
 
     /** JDK 8. */
-    JDK1_8("1.8", 52, 0),
+    JDK1_8("8", 52, 0),
 
     /** JDK 9. */
-    JDK1_9("1.9", 53, 0),
+    JDK1_9("9", 53, 0),
 
     /** JDK 10. */
-    JDK1_10("1.10", 54, 0),
+    JDK1_10("10", 54, 0),
 
     /** JDK 11. */
     JDK1_11("11", 55, 0),
 
     /** JDK 12. */

@@ -93,18 +93,16 @@
     private static final Map<String,Target> tab = new HashMap<>();
     static {
         for (Target t : values()) {
             tab.put(t.name, t);
         }
-        tab.put("5", JDK1_5);
-        tab.put("6", JDK1_6);
-        tab.put("7", JDK1_7);
-        tab.put("8", JDK1_8);
-        tab.put("9", JDK1_9);
-        tab.put("10", JDK1_10);
-        tab.put("11", JDK1_11);
-        tab.put("12", JDK1_12);
+        tab.put("1.5", JDK1_5);
+        tab.put("1.6", JDK1_6);
+        tab.put("1.7", JDK1_7);
+        tab.put("1.8", JDK1_8);
+        tab.put("1.9", JDK1_9);
+        tab.put("1.10", JDK1_10);
     }
 
     public final String name;
     public final int majorVersion;
     public final int minorVersion;

@@ -118,10 +116,14 @@
 
     public static Target lookup(String name) {
         return tab.get(name);
     }
 
+    public boolean isSupported() {
+        return this.compareTo(MIN) >= 0;
+    }
+
     /** Return the character to be used in constructing synthetic
      *  identifiers, where not specified by the JLS.
      */
     public char syntheticNameChar() {
         return '$';