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diff --git a/src/main/java/org/apache/commons/lang3/Charsets.java b/src/main/java/org/apache/commons/lang3/Charsets.java
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+++ b/src/main/java/org/apache/commons/lang3/Charsets.java
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.lang3;
+
+import java.nio.charset.Charset;
+import java.nio.charset.UnsupportedCharsetException;
+
+/**
+ * Internal use only.
+ * <p>
+ * Provides utilities for {@link Charset}.
+ * </p>
+ * <p>
+ * Package private since Apache Commons IO already provides a Charsets because {@link Charset} is in
+ * {@code java.nio.charset}.
+ * </p>
+ *
+ * @since 3.10
+ */
+class Charsets {
+
+    /**
+     * Returns the given {@code charset} or the default Charset if {@code charset} is null.
+     *
+     * @param charset a Charset or null.
+     * @return the given {@code charset} or the default Charset if {@code charset} is null.
+     */
+    static Charset toCharset(final Charset charset) {
+        return charset == null ? Charset.defaultCharset() : charset;
+    }
+
+    /**
+     * Returns the given {@code charset} or the default Charset if {@code charset} is null.
+     *
+     * @param charsetName a Charset or null.
+     * @return the given {@code charset} or the default Charset if {@code charset} is null.
+     * @throws UnsupportedCharsetException If no support for the named charset is available in this instance of the Java
+     *                                     virtual machine
+     */
+    static Charset toCharset(final String charsetName) {
+        return charsetName == null ? Charset.defaultCharset() : Charset.forName(charsetName);
+    }
+
+    /**
+     * Returns the given {@code charset} or the default Charset if {@code charset} is null.
+     *
+     * @param charsetName a Charset or null.
+     * @return the given {@code charset} or the default Charset if {@code charset} is null.
+     */
+    static String toCharsetName(final String charsetName) {
+        return charsetName == null ? Charset.defaultCharset().name() : charsetName;
+    }
+
+}