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be-graphes-model/src/main/java/org/insa/graphs/model/io/BadMagicNumberException.java

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+package org.insa.graphs.model.io;
+
+/**
+ * Exception thrown when there is a mismatch between expected and actual magic
+ * number.
+ *
+ */
+public class BadMagicNumberException extends BadFormatException {
+
+    /**
+     * 
+     */
+    private static final long serialVersionUID = -2176603967548838864L;
+
+    // Actual and expected magic numbers.
+    private int actualNumber, expectedNumber;
+
+    /**
+     * Create a new BadMagicNumberException with the given expected and actual magic
+     * number.
+     * 
+     * @param actualNumber Actual magic number (read from a file).
+     * @param expectedNumber Expected magic number.
+     */
+    public BadMagicNumberException(int actualNumber, int expectedNumber) {
+        super(String.format("Magic number mismatch, expected %#X, got %#X.", expectedNumber,
+                actualNumber));
+        this.actualNumber = actualNumber;
+        this.expectedNumber = expectedNumber;
+    }
+
+    /**
+     * @return The actual magic number.
+     */
+    public int getActualMagicNumber() {
+        return actualNumber;
+    }
+
+    /**
+     * @return The expected magic number.
+     */
+    public int getExpectedMagicNumber() {
+        return expectedNumber;
+    }
+
+}