public static final int VARIABLE = 2;

Week 6: Methods of OO Programming/14B. The Last Piece, Part 1: The Color Class

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+First, let's write a class called Color, 
+which has no other members than 2 integer class variables:
+
+    BLACK (value 2)
+    WHITE (value 1)
+
+These variables must be marked with the 'final' modifier.
+
+
+====================================================
+
+
+import java.util.Random;
+import java.lang.reflect.Field;
+
+public class Test {
+    public static void main(String[] args) {
+        final Random r = new Random();
+        
+        System.out.println("Testing the Color class...");
+
+        try {
+            Field white = Color.class.getDeclaredField("WHITE");
+            System.out.println("WHITE is final: " + (white.getModifiers() > 10));
+            System.out.println("WHITE, value: " + Color.WHITE);
+
+            Field black = Color.class.getDeclaredField("BLACK");
+            System.out.println("BLACK is final: " + (black.getModifiers() > 10));
+            System.out.println("BLACK, value: " + Color.BLACK);
+        } catch (NoSuchFieldException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        } catch (SecurityException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+    }
+}
+
+
+
+//ADD
+class Color {
+    // public - allow access from other class
+    // static - class-level constants
+    // final - cannot be changed
+    public static final int BLACK = 2;
+    public static final int WHITE = 1;
+}
+
+
+
+Testing the Color class...
+WHITE is final: true
+WHITE, value: 1
+
+BLACK is final: true
+BLACK, value: 2
+
+
+
+
+