Use preferred spelling for "cannot"

src/main/java/org/apache/commons/beanutils2/ConstructorUtils.java

@@ -48,7 +48,7 @@ public class ConstructorUtils {
      * @param <T>           the type of the constructor
      * @param klass         the class to be constructed
      * @param parameterType The constructor parameter type
-     * @return null if matching accessible constructor can not be found.
+     * @return null if matching accessible constructor cannot be found.
      * @see Class#getConstructor
      * @see #getAccessibleConstructor(java.lang.reflect.Constructor)
      */
@@ -64,7 +64,7 @@ public static <T> Constructor<T> getAccessibleConstructor(final Class<T> klass,
      * @param <T>            the type to be constructed
      * @param klass          the class to be constructed
      * @param parameterTypes the parameter array
-     * @return null if matching accessible constructor can not be found
+     * @return null if matching accessible constructor cannot be found
      * @see Class#getConstructor
      * @see #getAccessibleConstructor(java.lang.reflect.Constructor)
      */
@@ -82,7 +82,7 @@ public static <T> Constructor<T> getAccessibleConstructor(final Class<T> klass,
      *
      * @param <T>  the type of the constructor
      * @param ctor prototype constructor object.
-     * @return {@code null} if accessible constructor can not be found.
+     * @return {@code null} if accessible constructor cannot be found.
      * @see SecurityManager
      */
     public static <T> Constructor<T> getAccessibleConstructor(final Constructor<T> ctor) {

src/main/java/org/apache/commons/beanutils2/converters/DimensionConverter.java

@@ -70,7 +70,7 @@ protected <T> T convertToType(final Class<T> type, final Object value) throws Th
             final String stringValue = toString(value);
 
             if (stringValue.isEmpty()) {
-                throw new IllegalArgumentException("Dimensions can not be empty.");
+                throw new IllegalArgumentException("Dimensions cannot be empty.");
             }
 
             final Matcher matcher = DIMENSION_PATTERN.matcher(stringValue);

src/main/java/org/apache/commons/beanutils2/converters/PointConverter.java

@@ -54,15 +54,15 @@ public PointConverter(final Point defaultValue) {
      * @return A {@link Point} represented by the x and y coordinate of the input.
      * @throws NullPointerException     If the value is null.
      * @throws IllegalArgumentException If the configuration value is an invalid representation of a {@link Point}.
-     * @throws NumberFormatException    If a one of coordinates can not be parsed to an {@link Integer}.
+     * @throws NumberFormatException    If a one of coordinates cannot be parsed to an {@link Integer}.
      */
     @Override
     protected <T> T convertToType(final Class<T> type, final Object value) throws Throwable {
         if (Point.class.isAssignableFrom(type)) {
             final String stringValue = toString(value);
 
             if (stringValue.isEmpty()) {
-                throw new IllegalArgumentException("A point can not be empty.");
+                throw new IllegalArgumentException("A point cannot be empty.");
             }
 
             final int lastCharIndex = stringValue.length() - 1;

src/main/java/org/apache/commons/beanutils2/locale/converters/FloatLocaleConverter.java

@@ -56,7 +56,7 @@ private FloatLocaleConverter(final Float defaultValue, final Locale locale, fina
 
     /**
      * Parses the specified locale-sensitive input object into an output object of the specified type. This method will return Float value or throw exception if
-     * value can not be stored in the Float.
+     * value cannot be stored in the Float.
      *
      * @param value   The input object to be converted
      * @param pattern The pattern is used for the conversion