#0000 building blocks

.gitignore

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+/target/
+.classpath
+.project
+/.settings/*

src/main/java/learnmind/state/Code.java

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+package learnmind.state;
+
+/**
+ * A code is a set of 4 ordered digits to be placed in the mastermind board.
+ * This class represents the code to be broken as well as the guesses made by the player. 
+ * @author hdouss
+ *
+ */
+public class Code {
+
+    /**
+     * Numerical representation of the code.
+     */
+    private final int num;
+
+    /**
+     * Code constructor. Arguments are ordered from leftmost digit to the rightmost digit
+     * to be placed in the board.
+     * @param one First digit
+     * @param two Second digit
+     * @param three Third digit
+     * @param four Fourth digit
+     */
+    public Code(final int one, final int two, final int three, final int four) {
+        this.num = 1000 * one + 100 * two + 10 * three + four;
+    }
+
+    /**
+     * Accessor for the numerical representation of the code.
+     * @return A numerical representation of the code.
+     */
+    public int num() {
+        return this.num;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + num;
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        Code other = (Code) obj;
+        if (num != other.num)
+            return false;
+        return true;
+    }
+}