Use preferred spelling for "cannot"

Author: garydgregory

src/main/java/org/apache/commons/io/input/AutoCloseInputStream.java

@@ -136,7 +136,7 @@ protected void afterRead(final int n) throws IOException {
      * first called.
      * </p>
      *
-     * @throws IOException if the underlying input stream can not be closed
+     * @throws IOException if the underlying input stream cannot be closed
      */
     @Override
     public void close() throws IOException {

src/main/java/org/apache/commons/io/input/XmlStreamReaderException.java

@@ -20,7 +20,7 @@
 
 /**
  * The XmlStreamReaderException is thrown by the XmlStreamReader constructors if
- * the charset encoding can not be determined according to the XML 1.0
+ * the charset encoding cannot be determined according to the XML 1.0
  * specification and RFC 3023.
  * <p>
  * The exception returns the unconsumed InputStream to allow the application to

src/test/java/org/apache/commons/io/input/XmlStreamReaderTest.java

@@ -212,7 +212,7 @@ public void testAlternateDefaultEncoding(final String contentType, final String
     private void testAlternateDefaultEncoding(final String streamEnc, final String alternateEnc, final XmlStreamReader xmlReader) {
         assertEquals(xmlReader.getDefaultEncoding(), alternateEnc);
         if (!streamEnc.equals(UTF_16)) {
-            // we can not assert things here because UTF-8, US-ASCII and
+            // we cannot assert things here because UTF-8, US-ASCII and
             // ISO-8859-1 look alike for the chars used for detection
             // (niallp 2010-10-06 - I re-instated the check below - the tests(6) passed)
             final String enc = alternateEnc != null ? alternateEnc : streamEnc;
@@ -449,7 +449,7 @@ public void testHttpValid(final String cT, final String bomEnc, final String str
         try (InputStream is = getXmlInputStream(bomEnc, prologEnc == null ? XML1 : XML3, streamEnc, prologEnc);
             XmlStreamReader xmlReader = new XmlStreamReader(is, cT, false)) {
             if (!streamEnc.equals(UTF_16)) {
-                // we can not assert things here because UTF-8, US-ASCII and
+                // we cannot assert things here because UTF-8, US-ASCII and
                 // ISO-8859-1 look alike for the chars used for detection
                 // (niallp 2010-10-06 - I re-instated the check below and removed the 2 tests that failed)
                 assertEquals(xmlReader.getEncoding(), streamEnc);

src/test/java/org/apache/commons/io/input/compatibility/XmlStreamReaderException.java

@@ -20,7 +20,7 @@
 
 /**
  * The XmlStreamReaderException is thrown by the XmlStreamReader constructors if
- * the charset encoding can not be determined according to the XML 1.0
+ * the charset encoding cannot be determined according to the XML 1.0
  * specification and RFC 3023.
  * <p>
  * The exception returns the unconsumed InputStream to allow the application to