Index: trunk/test/unit/org/openstreetmap/josm/data/imagery/WMTSTileSourceTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/data/imagery/WMTSTileSourceTest.java	(revision 19066)
+++ trunk/test/unit/org/openstreetmap/josm/data/imagery/WMTSTileSourceTest.java	(revision 19077)
@@ -16,4 +16,5 @@
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
+import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -22,5 +23,4 @@
 import java.util.concurrent.TimeUnit;
 
-import org.apache.commons.io.FileUtils;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
@@ -488,10 +488,10 @@
     void testSupportedMimeTypesUrlEncode(String mimeType, @TempDir File temporaryDirectory)
             throws IOException, WMTSGetCapabilitiesException, ReflectiveOperationException {
-        final String data = FileUtils.readFileToString(new File(TestUtils.getTestDataRoot() +
-                "wmts/bug13975-multiple-tile-matrices-for-one-layer-projection.xml"), StandardCharsets.UTF_8)
+        final String data = Files.readString(Paths.get(TestUtils.getTestDataRoot() +
+                        "wmts", "bug13975-multiple-tile-matrices-for-one-layer-projection.xml"), StandardCharsets.UTF_8)
                 .replace("image/jpgpng", mimeType);
-        File file = new File(temporaryDirectory, "testSupportedMimeTypes.xml");
-        FileUtils.writeStringToFile(file, data, StandardCharsets.UTF_8);
-        WMTSCapabilities capabilities = WMTSTileSource.getCapabilities(file.toURI().toURL().toExternalForm(), Collections.emptyMap());
+        Path file = temporaryDirectory.toPath().resolve("testSupportedMimeTypes.xml");
+        Files.writeString(file, data, StandardCharsets.UTF_8);
+        WMTSCapabilities capabilities = WMTSTileSource.getCapabilities(file.toUri().toURL().toExternalForm(), Collections.emptyMap());
         assertEquals(2, capabilities.getLayers().size());
         Field format = WMTSTileSource.Layer.class.getDeclaredField("format");