(init): Starting the project

src/main/java/ChunkUtils.java

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+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Utility methods related to chunk creation.
+ */
+public class ChunkUtils {
+
+    private ChunkUtils() {
+        // Utility class
+    }
+
+    /**
+     * Splits the total file size into a list of chunks.
+     * Chunk sizes are as even as possible.
+     * If the size is not exactly divisible, the last chunk gets the remainder.
+     *
+     * @param totalSizeMB total file size in MB
+     * @param chunkCount number of chunks
+     * @return list of ChunkStatus objects
+     */
+    public static List<ChunkStatus> createChunks(int totalSizeMB, int chunkCount) {
+        List<ChunkStatus> chunks = new ArrayList<>();
+
+        if (totalSizeMB <= 0 || chunkCount <= 0) {
+            return chunks;
+        }
+
+        int baseChunkSize = totalSizeMB / chunkCount;
+        int remainder = totalSizeMB % chunkCount;
+
+        for (int i = 0; i < chunkCount; i++) {
+            int chunkSize = baseChunkSize;
+
+            if (i == chunkCount - 1) {
+                chunkSize += remainder;
+            }
+
+            // Create one ChunkStatus object for each chunk.
+            // chunkId is the chunk number, and chunkSize is this chunk's total size.
+            chunks.add(new ChunkStatus(i + 1, chunkSize));
+        }
+
+        return chunks;
+    }
+}