Use StandardCharsets instead of magic string

Author: garydgregory

src/test/java/org/apache/commons/io/CharsetsTest.java

@@ -98,27 +98,27 @@ public void testToCharset_String_Charset() {
 
     @Test
     public void testUsAscii() {
-        assertEquals("US-ASCII", Charsets.US_ASCII.name());
+        assertEquals(StandardCharsets.US_ASCII.name(), Charsets.US_ASCII.name());
     }
 
     @Test
     public void testUtf16() {
-        assertEquals("UTF-16", Charsets.UTF_16.name());
+        assertEquals(StandardCharsets.UTF_16.name(), Charsets.UTF_16.name());
     }
 
     @Test
     public void testUtf16Be() {
-        assertEquals("UTF-16BE", Charsets.UTF_16BE.name());
+        assertEquals(StandardCharsets.UTF_16BE.name(), Charsets.UTF_16BE.name());
     }
 
     @Test
     public void testUtf16Le() {
-        assertEquals("UTF-16LE", Charsets.UTF_16LE.name());
+        assertEquals(StandardCharsets.UTF_16LE.name(), Charsets.UTF_16LE.name());
     }
 
     @Test
     public void testUtf8() {
-        assertEquals("UTF-8", Charsets.UTF_8.name());
+        assertEquals(StandardCharsets.UTF_8.name(), Charsets.UTF_8.name());
     }
 
 }

src/test/java/org/apache/commons/io/IOUtilsTest.java

@@ -1753,7 +1753,7 @@ public void testWriteBigString() throws IOException {
     public void testWriteLines() throws IOException {
         final String[] data = {"The", "quick"};
         final ByteArrayOutputStream out = new ByteArrayOutputStream();
-        IOUtils.writeLines(Arrays.asList(data), "\n", out, "UTF-16");
+        IOUtils.writeLines(Arrays.asList(data), "\n", out, StandardCharsets.UTF_16.name());
         final String result = new String(out.toByteArray(), StandardCharsets.UTF_16);
         assertEquals("The\nquick\n", result);
     }