Fixup checkstyle issues

jhdf/src/main/java/io/jhdf/api/WritableAttributeImpl.java

@@ -1,3 +1,12 @@
+/*
+ * This file is part of jHDF. A pure Java library for accessing HDF5 files.
+ *
+ * http://jhdf.io
+ *
+ * Copyright (c) 2024 James Mudd
+ *
+ * MIT License see 'LICENSE' file
+ */
 package io.jhdf.api;
 
 import io.jhdf.Utils;

jhdf/src/test/java/io/jhdf/SimpleWritingTest.java

@@ -173,6 +173,19 @@ void writeAttributes() throws Exception {
 			assertThat(attribute.getDimensions()).isEqualTo(new int[] {3});
 			assertThat(attribute.getJavaType()).isEqualTo(int.class);
 		}
+	}
+
+	@Test
+	@Order(6)
+	@EnabledIfH5DumpAvailable
+	void readAttributesWithH5Dump() throws Exception {
+		// Read with h5dump
+		HDF5FileXml hdf5FileXml = H5Dump.dumpAndParse(tempFile);
 
+		// Read with jhdf
+		try(HdfFile hdfFile = new HdfFile(tempFile)) {
+			// Compare
+			H5Dump.assetXmlAndHdfFileMatch(hdf5FileXml, hdfFile);
+		}
 	}
 }

jhdf/src/test/java/io/jhdf/object/message/AttributeMessageTest.java

@@ -1,17 +1,24 @@
+/*
+ * This file is part of jHDF. A pure Java library for accessing HDF5 files.
+ *
+ * http://jhdf.io
+ *
+ * Copyright (c) 2024 James Mudd
+ *
+ * MIT License see 'LICENSE' file
+ */
 package io.jhdf.object.message;
 
 import io.jhdf.Superblock;
 import io.jhdf.api.WritableAttributeImpl;
 import io.jhdf.storage.HdfBackingStorage;
 import org.junit.jupiter.api.Test;
-import org.mockito.Mockito;
 
 import java.nio.ByteBuffer;
 import java.nio.IntBuffer;
 import java.util.BitSet;
 
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.jupiter.api.Assertions.*;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;