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src/main/java/MainFirstTask/Beta.java

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+package MainFirstTask;
+
+/**
+ * Beta (������)
+ * @version 1.0 3 Oct 2013
+ * @author Andrei Loyevets
+ */
+public class Beta extends RootVegetable{
+
+	/**
+	 * Default constructor.
+	 */
+	public Beta() {
+		super("Beta", 47);
+	}
+
+	/**
+	 * Constructor with parameters. Creates a Beta of a given weight.
+	 * @param weight the mass of the vegetable that will be created
+	 */
+	public Beta(double weight) {
+		super("Beta", 47, weight);
+	}
+}

src/main/java/MainFirstTask/CaloriesComparator.java

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+package MainFirstTask;
+
+/**
+ * This class implements interface Comparator to compare Vegetables by
+ * calories per 100g.
+ * @version 1.0 3 Oct 2013
+ * @author Andrei Loyevets
+ */
+public class CaloriesComparator implements java.util.Comparator<Vegetable>{
+
+	public int compare(Vegetable v1, Vegetable v2) {
+        return (int) (v1.getCalories() - v2.getCalories());
+    }
+}

src/main/java/MainFirstTask/Carrot.java

@@ -0,0 +1,24 @@
+package MainFirstTask;
+
+/**
+ * Carrot (�������)
+ * @version 1.0 3 Oct 2013
+ * @author Andrei Loyevets
+ */
+public class Carrot extends RootVegetable{
+
+	/**
+	 * Default constructor.
+	 */
+	public Carrot() {
+		super("Carrot", 41);
+	}
+
+	/**
+	 * Constructor with parameters. Creates a Carrot of a given weight.
+	 * @param weight the mass of the vegetable that will be created
+	 */
+	public Carrot(double weight) {
+		super("Carrot", 41, weight);
+	}
+}