convert polishing: removed checked exception from Converter interface to support direct use, added Converter to each implementation for consistency

org.springframework.core/src/main/java/org/springframework/core/convert/support/AbstractCollectionConverter.java

@@ -35,7 +35,6 @@ abstract class AbstractCollectionConverter implements ConversionExecutor {
 
 	private final ConversionExecutor elementConverter;
 
-
 	public AbstractCollectionConverter(TypeDescriptor sourceCollectionType, TypeDescriptor targetCollectionType, GenericConversionService conversionService) {
 		this.conversionService = conversionService;
 		this.sourceCollectionType = sourceCollectionType;
@@ -56,7 +55,6 @@ abstract class AbstractCollectionConverter implements ConversionExecutor {
 		}
 	}
 
-
 	/**
 	 * The collection type to convert to.
 	 */

org.springframework.core/src/main/java/org/springframework/core/convert/support/ArrayToArray.java

@@ -29,7 +29,6 @@ import org.springframework.core.convert.TypeDescriptor;
  * @author Juergen Hoeller
  * @since 3.0
  */
-@SuppressWarnings("unchecked")
 class ArrayToArray extends AbstractCollectionConverter {
 
 	public ArrayToArray(TypeDescriptor sourceArrayType, TypeDescriptor targetArrayType, GenericConversionService conversionService) {

org.springframework.core/src/main/java/org/springframework/core/convert/support/ArrayToCollection.java

@@ -39,7 +39,6 @@ class ArrayToCollection extends AbstractCollectionConverter {
 	}
 
 	@Override
-	@SuppressWarnings("unchecked")
 	protected Object doExecute(Object sourceArray) throws Exception {
 		int length = Array.getLength(sourceArray);
 		Collection collection = CollectionFactory.createCollection(getTargetCollectionType(), length);

org.springframework.core/src/main/java/org/springframework/core/convert/support/CharacterToNumberFactory.java

@@ -44,7 +44,6 @@ class CharacterToNumberFactory implements ConverterFactory<Character, Number> {
 		return new CharacterToNumber<T>(targetType);
 	}
 
-
 	private static class CharacterToNumber<T extends Number> implements Converter<Character, T> {
 
 		private final Class<T> targetType;
@@ -53,7 +52,7 @@ class CharacterToNumberFactory implements ConverterFactory<Character, Number> {
 			this.targetType = targetType;
 		}
 	
-		public T convert(Character source) throws Exception {
+		public T convert(Character source) {
 			return NumberUtils.convertNumberToTargetClass((short) source.charValue(), targetType);
 		}
 	}

org.springframework.core/src/main/java/org/springframework/core/convert/support/DefaultConversionService.java

@@ -30,22 +30,15 @@ public class DefaultConversionService extends GenericConversionService {
 	 * Create a new default conversion service, installing the default converters.
 	 */
 	public DefaultConversionService() {
-		addConverter(new StringToByte());
-		addConverter(new StringToBoolean());
-		addConverter(new StringToCharacter());
-		addConverter(new StringToShort());
-		addConverter(new StringToInteger());
-		addConverter(new StringToLong());
-		addConverter(new StringToFloat());
-		addConverter(new StringToDouble());
-		addConverter(new StringToBigInteger());
-		addConverter(new StringToBigDecimal());
-		addConverter(new StringToLocale());
-		addConverter(new NumberToCharacter());
-		addConverter(new ObjectToString());
-		addConverter(new StringToEnumFactory());
-		addConverter(new NumberToNumberFactory());
-		addConverter(new CharacterToNumberFactory());
+		addConverter(new StringToBooleanConverter());
+		addConverter(new StringToCharacterConverter());
+		addConverter(new StringToLocaleConverter());
+		addConverter(new NumberToCharacterConverter());
+		addConverter(new ObjectToStringConverter());
+		addConverterFactory(new StringToNumberConverterFactory());
+		addConverterFactory(new StringToEnumConverterFactory());
+		addConverterFactory(new NumberToNumberConverterFactory());
+		addConverterFactory(new CharacterToNumberFactory());
 	}
 
 }

org.springframework.core/src/main/java/org/springframework/core/convert/support/GenericConversionService.java

@@ -46,7 +46,7 @@ import org.springframework.util.ClassUtils;
  * @author Juergen Hoeller
  * @since 3.0
  * @see #addConverter(Converter)
- * @see #addConverter(ConverterFactory)
+ * @see #addConverterFactory(ConverterFactory)
  */
 public class GenericConversionService implements ConversionService, ConverterRegistry {
 
@@ -58,7 +58,6 @@ public class GenericConversionService implements ConversionService, ConverterReg
 	 */
 	private final Map<Class, Map<Class, Object>> sourceTypeConverters = new HashMap<Class, Map<Class, Object>>();
 
-
 	/**
 	 * Registers the converters in the set provided.
 	 * JavaBean-friendly alternative to calling {@link #addConverter(Converter)}.
@@ -71,13 +70,13 @@ public class GenericConversionService implements ConversionService, ConverterReg
 	}
 
 	/**
-	 * Registers the converters in the set provided.
-	 * JavaBean-friendly alternative to calling {@link #addConverter(ConverterFactory)}.
-	 * @see #addConverter(ConverterFactory)
+	 * Registers the converter factories in the set provided.
+	 * JavaBean-friendly alternative to calling {@link #addConverterFactory(ConverterFactory)}.
+	 * @see #addConverterFactory(ConverterFactory)
 	 */
 	public void setConverterFactories(Set<ConverterFactory> converters) {
 		for (ConverterFactory converterFactory : converters) {
-			addConverter(converterFactory);
+			addConverterFactory(converterFactory);
 		}
 	}
 
@@ -95,35 +94,33 @@ public class GenericConversionService implements ConversionService, ConverterReg
 		return this.parent;
 	}
 
-
 	// implementing ConverterRegistry
 	
 	public void addConverter(Converter converter) {
 		List<Class> typeInfo = getRequiredTypeInfo(converter);
 		if (typeInfo == null) {
-			throw new IllegalArgumentException("Unable to the determine sourceType <S> and targetType <T> your Converter<S, T> converts between");
+			throw new IllegalArgumentException("Unable to the determine sourceType <S> and targetType <T> your Converter<S, T> converts between; declare these types or implement ConverterInfo");
 		}
 		Class sourceType = typeInfo.get(0);
 		Class targetType = typeInfo.get(1);
 		getSourceMap(sourceType).put(targetType, converter);
 	}
 
-	public void addConverter(ConverterFactory<?, ?> converterFactory) {
+	public void addConverterFactory(ConverterFactory<?, ?> converterFactory) {
 		List<Class> typeInfo = getRequiredTypeInfo(converterFactory);
 		if (typeInfo == null) {
-			throw new IllegalArgumentException("Unable to the determine sourceType <S> and targetType <T> your ConverterFactory<S, T> creates Converters to convert between");
+			throw new IllegalArgumentException("Unable to the determine sourceType <S> and targetType <T> your ConverterFactory<S, T> creates Converters to convert between; declare these types or implement ConverterInfo");
 		}
 		Class sourceType = typeInfo.get(0);
 		Class targetType = typeInfo.get(1);
 		getSourceMap(sourceType).put(targetType, converterFactory);
 	}
 
-	public void removeConverter(Class<?> sourceType, Class<?> targetType) {
+	public void removeConvertible(Class<?> sourceType, Class<?> targetType) {
 		Map sourceMap = getSourceMap(sourceType);
 		sourceMap.remove(targetType);
 	}
 
-
 	// implementing ConversionService
 
 	public boolean canConvert(Class<?> sourceType, Class<?> targetType) {
@@ -459,7 +456,6 @@ public class GenericConversionService implements ConversionService, ConverterReg
 		}		
 	}
 
-	@SuppressWarnings("unchecked")
 	private Converter getConverter(Map<Class, Object> converters, Class<?> currentClass, Class<?> targetType) {
 		Object converter = converters.get(currentClass);
 		if (converter == null) {

org.springframework.core/src/main/java/org/springframework/core/convert/support/MapEntryConverter.java

@@ -26,18 +26,15 @@ class MapEntryConverter {
 
 	public static final MapEntryConverter NO_OP_INSTANCE = new MapEntryConverter(null, null);
 
-
 	private final ConversionExecutor keyConverter;
 
 	private final ConversionExecutor valueConverter;
 
-
 	public MapEntryConverter(ConversionExecutor keyConverter, ConversionExecutor valueConverter) {
 		this.keyConverter = keyConverter;
 		this.valueConverter = valueConverter;
 	}
 
-
 	public Object convertKey(Object key) {
 		if (this.keyConverter != null) {
 			return this.keyConverter.execute(key);

org.springframework.core/src/main/java/org/springframework/core/convert/support/MapToMap.java

@@ -39,7 +39,6 @@ class MapToMap implements ConversionExecutor {
 
 	private final MapEntryConverter entryConverter;
 
-
 	/**
 	 * Creates a new map-to-map converter
 	 * @param sourceType the source map type
@@ -53,7 +52,6 @@ class MapToMap implements ConversionExecutor {
 		this.entryConverter = createEntryConverter();
 	}
 
-
 	private MapEntryConverter createEntryConverter() {
 		if (this.sourceType.isMapEntryTypeKnown() && this.targetType.isMapEntryTypeKnown()) {
 			ConversionExecutor keyConverter = this.conversionService.getConversionExecutor(

org.springframework.core/src/main/java/org/springframework/core/convert/support/MapToStringArray.java

@@ -37,14 +37,12 @@ class MapToStringArray implements ConversionExecutor {
 
 	private final MapEntryConverter entryConverter;
 
-
 	public MapToStringArray(TypeDescriptor targetType, GenericConversionService conversionService) {
 		this.targetType = targetType;
 		this.conversionService = conversionService;
 		this.entryConverter = createEntryConverter();
 	}
 
-
 	private MapEntryConverter createEntryConverter() {
 		if (this.targetType.isMapEntryTypeKnown()) {
 			ConversionExecutor keyConverter = this.conversionService.getConversionExecutor(this.targetType.getMapKeyType(),

org.springframework.core/src/main/java/org/springframework/core/convert/support/MapToStringCollection.java

@@ -34,13 +34,11 @@ class MapToStringCollection implements ConversionExecutor {
 
 	private final ArrayToCollection collectionConverter;
 	
-
 	public MapToStringCollection(TypeDescriptor targetType, GenericConversionService conversionService) {
 		this.converter = new MapToStringArray(targetType, conversionService);
 		this.collectionConverter = new ArrayToCollection(TypeDescriptor.valueOf(String[].class), targetType, conversionService);
 	}
 
-
 	public Object execute(Object source) throws ConversionFailedException {
 		Map map = (Map) source;
 		Object array = this.converter.execute(map);

org.springframework.core/src/main/java/org/springframework/core/convert/support/NoOpConversionExecutor.java

@@ -28,7 +28,6 @@ class NoOpConversionExecutor implements ConversionExecutor {
 
 	public static final ConversionExecutor INSTANCE = new NoOpConversionExecutor();
 	
-
 	private NoOpConversionExecutor() {
 	}
 

org.springframework.core/src/main/java/org/springframework/core/convert/support/NumberToCharacterConverter.java

@@ -17,7 +17,6 @@
 package org.springframework.core.convert.support;
 
 import org.springframework.core.convert.converter.Converter;
-import org.springframework.util.NumberUtils;
 
 /**
  * Converts from any JDK-standard Number implementation to a Character.
@@ -32,9 +31,8 @@ import org.springframework.util.NumberUtils;
  * @see java.lang.Float
  * @see java.lang.Double
  * @see java.math.BigDecimal
- * @see NumberUtils
  */
-class NumberToCharacter implements Converter<Number, Character> {
+class NumberToCharacterConverter implements Converter<Number, Character> {
 
 	public Character convert(Number source) {
 		return (char) source.shortValue();

org.springframework.core/src/main/java/org/springframework/core/convert/support/NumberToNumberConverterFactory.java

@@ -38,13 +38,12 @@ import org.springframework.util.NumberUtils;
  * @see java.math.BigDecimal
  * @see NumberUtils
  */
-class NumberToNumberFactory implements ConverterFactory<Number, Number> {
+class NumberToNumberConverterFactory implements ConverterFactory<Number, Number> {
 
 	public <T extends Number> Converter<Number, T> getConverter(Class<T> targetType) {
 		return new NumberToNumber<T>(targetType);
 	}
 
-
 	private static class NumberToNumber<T extends Number> implements Converter<Number, T> {
 
 		private final Class<T> targetType;
@@ -53,7 +52,7 @@ class NumberToNumberFactory implements ConverterFactory<Number, Number> {
 			this.targetType = targetType;
 		}
 	
-		public T convert(Number source) throws Exception {
+		public T convert(Number source) {
 			return NumberUtils.convertNumberToTargetClass(source, targetType);
 		}
 	}

org.springframework.core/src/main/java/org/springframework/core/convert/support/ObjectToArray.java

@@ -34,16 +34,13 @@ class ObjectToArray implements ConversionExecutor {
 
 	private final ConversionExecutor elementConverter;
 	
-
 	public ObjectToArray(TypeDescriptor sourceObjectType, TypeDescriptor targetArrayType,
 			GenericConversionService conversionService) {
-
 		this.elementType = targetArrayType.getElementType();
 		this.elementConverter = conversionService.getConversionExecutor(
 				sourceObjectType.getType(), TypeDescriptor.valueOf(this.elementType));
 	}
 
-
 	public Object execute(Object source) throws ConversionFailedException {
 		Object array = Array.newInstance(this.elementType, 1);
 		Object element = this.elementConverter.execute(source);

org.springframework.core/src/main/java/org/springframework/core/convert/support/ObjectToCollection.java

@@ -33,11 +33,9 @@ class ObjectToCollection implements ConversionExecutor {
 	private final TypeDescriptor targetCollectionType;
 
 	private final ConversionExecutor elementConverter;
-	
 
 	public ObjectToCollection(TypeDescriptor sourceObjectType, TypeDescriptor targetCollectionType,
 			GenericConversionService typeConverter) {
-
 		this.targetCollectionType = targetCollectionType;
 		Class<?> elementType = targetCollectionType.getElementType();
 		if (elementType != null) {
@@ -48,7 +46,6 @@ class ObjectToCollection implements ConversionExecutor {
 		}
 	}
 
-	@SuppressWarnings("unchecked")
 	public Object execute(Object source) throws ConversionFailedException {
 		Collection collection = CollectionFactory.createCollection(this.targetCollectionType.getType(), 1);
 		collection.add(this.elementConverter.execute(source));

org.springframework.core/src/main/java/org/springframework/core/convert/support/ObjectToStringConverter.java

@@ -26,7 +26,7 @@ import org.springframework.core.convert.converter.Converter;
  * @author Keith Donald
  * @since 3.0
  */
-class ObjectToString implements Converter<Object, String> {
+class ObjectToStringConverter implements Converter<Object, String> {
 
 	public String convert(Object source) {
 		return source.toString();

org.springframework.core/src/main/java/org/springframework/core/convert/support/StaticConversionExecutor.java

@@ -35,15 +35,12 @@ class StaticConversionExecutor implements ConversionExecutor {
 
 	private final Converter converter;
 
-
 	public StaticConversionExecutor(TypeDescriptor sourceType, TypeDescriptor targetType, Converter converter) {
 		this.sourceType = sourceType;
 		this.targetType = targetType;
 		this.converter = converter;
 	}
 
-
-	@SuppressWarnings("unchecked")
 	public Object execute(Object source) throws ConversionFailedException {
 		if (source == null) {
 			return null;

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringArrayToMap.java

@@ -40,7 +40,6 @@ class StringArrayToMap implements ConversionExecutor {
 
 	private final MapEntryConverter entryConverter;
 
-
 	public StringArrayToMap(TypeDescriptor sourceType, TypeDescriptor targetType, GenericConversionService conversionService) {
 		this.sourceType = sourceType;
 		this.targetType = targetType;
@@ -48,7 +47,6 @@ class StringArrayToMap implements ConversionExecutor {
 		this.entryConverter = createEntryConverter();
 	}
 
-
 	private MapEntryConverter createEntryConverter() {
 		if (this.targetType.isMapEntryTypeKnown()) {
 			ConversionExecutor keyConverter = this.conversionService.getConversionExecutor(String.class,
@@ -62,7 +60,6 @@ class StringArrayToMap implements ConversionExecutor {
 		}
 	}
 
-	@SuppressWarnings("unchecked")
 	public Object execute(Object source) throws ConversionFailedException {
 		try {
 			int length = Array.getLength(source);

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringArrayToObject.java

@@ -31,12 +31,10 @@ class StringArrayToObject implements ConversionExecutor {
 
 	private final ConversionExecutor elementConverter;
 
-
 	public StringArrayToObject(TypeDescriptor targetType, GenericConversionService conversionService) {
 		this.elementConverter = conversionService.getConversionExecutor(String.class, targetType);
 	}
 
-
 	public Object execute(Object source) throws ConversionFailedException {
 		String str = StringUtils.arrayToCommaDelimitedString(ObjectUtils.toObjectArray(source));
 		return this.elementConverter.execute(str);

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToArray.java

@@ -25,17 +25,14 @@ import org.springframework.util.StringUtils;
  * @author Keith Donald
  * @since 3.0
  */
-@SuppressWarnings("unchecked")
 class StringToArray implements ConversionExecutor {
 
 	private final ArrayToArray converter;
-	
 
 	public StringToArray(TypeDescriptor targetType, GenericConversionService conversionService) {
 		this.converter = new ArrayToArray(TypeDescriptor.valueOf(String[].class), targetType, conversionService);
 	}
 	
-
 	public Object execute(Object source) {
 		String str = (String) source;
 		String[] fields = StringUtils.commaDelimitedListToStringArray(str);

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToBigDecimal.java

@@ -1,36 +0,0 @@
-/*
- * Copyright 2002-2009 the original author or authors.
- *
- * Licensed 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.springframework.core.convert.support;
-
-import java.math.BigDecimal;
-
-import org.springframework.core.convert.converter.Converter;
-import org.springframework.util.NumberUtils;
-
-/**
- * Converts a String to a BigDecimal.
- *
- * @author Keith Donald
- * @since 3.0
- */
-class StringToBigDecimal implements Converter<String, BigDecimal> {
-
-	public BigDecimal convert(String source) {
-		return NumberUtils.parseNumber(source, BigDecimal.class);
-	}
-
-}

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToBigInteger.java

@@ -1,36 +0,0 @@
-/*
- * Copyright 2002-2009 the original author or authors.
- *
- * Licensed 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.springframework.core.convert.support;
-
-import java.math.BigInteger;
-
-import org.springframework.core.convert.converter.Converter;
-import org.springframework.util.NumberUtils;
-
-/**
- * Converts a String to a BigInteger.
- *
- * @author Keith Donald
- * @since 3.0
- */
-class StringToBigInteger implements Converter<String, BigInteger> {
-
-	public BigInteger convert(String source) {
-		return NumberUtils.parseNumber(source, BigInteger.class);
-	}
-
-}

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToBooleanConverter.java

@@ -24,7 +24,7 @@ import org.springframework.core.convert.converter.Converter;
  * @author Keith Donald
  * @since 3.0
  */
-class StringToBoolean implements Converter<String, Boolean> {
+class StringToBooleanConverter implements Converter<String, Boolean> {
 
 	public Boolean convert(String source) {
 		if (source.equals("true")) {

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToByte.java

@@ -1,34 +0,0 @@
-/*
- * Copyright 2002-2009 the original author or authors.
- *
- * Licensed 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.springframework.core.convert.support;
-
-import org.springframework.core.convert.converter.Converter;
-import org.springframework.util.NumberUtils;
-
-/**
- * Converts a String to a Byte.
- *
- * @author Keith Donald
- * @since 3.0
- */
-class StringToByte implements Converter<String, Byte> {
-
-	public Byte convert(String source) {
-		return NumberUtils.parseNumber(source, Byte.class);
-	}
-
-}

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToCharacterConverter.java

@@ -24,11 +24,11 @@ import org.springframework.core.convert.converter.Converter;
  * @author Keith Donald
  * @since 3.0
  */
-class StringToCharacter implements Converter<String, Character> {
+class StringToCharacterConverter implements Converter<String, Character> {
 
 	public Character convert(String source) {
-		if (source.length() != 1) {
-			throw new IllegalArgumentException("To be a Character the String '" + source + "' must have a length of 1");
+		if (source.length() == 0) {
+			throw new IllegalArgumentException("Invalid value; to convert to a Character a String must have a length of 1 or greater");
 		}
 		return source.charAt(0);
 	}

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToCollection.java

@@ -30,12 +30,10 @@ class StringToCollection implements ConversionExecutor {
 
 	private final ArrayToCollection converter;
 
-
 	public StringToCollection(TypeDescriptor sourceType, TypeDescriptor targetType, GenericConversionService conversionService) {
 		this.converter = new ArrayToCollection(sourceType, targetType, conversionService);
 	}
 
-
 	public Object execute(Object source) throws ConversionFailedException {
 		String string = (String) source;
 		String[] fields = string.split(",");

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToDouble.java

@@ -1,34 +0,0 @@
-/*
- * Copyright 2002-2009 the original author or authors.
- * 
- * Licensed 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.springframework.core.convert.support;
-
-import org.springframework.core.convert.converter.Converter;
-import org.springframework.util.NumberUtils;
-
-/**
- * Converts a String to a Double.
- *
- * @author Keith Donald
- * @since 3.0
- */
-class StringToDouble implements Converter<String, Double> {
-
-	public Double convert(String source) {
-		return NumberUtils.parseNumber(source, Double.class);
-	}
-
-}

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToEnumConverterFactory.java

@@ -27,13 +27,12 @@ import org.springframework.core.convert.converter.ConverterInfo;
  * @since 3.0
  */
 @SuppressWarnings("unchecked")
-class StringToEnumFactory implements ConverterFactory<String, Enum> {
+class StringToEnumConverterFactory implements ConverterFactory<String, Enum> {
 
 	public <T extends Enum> Converter<String, T> getConverter(Class<T> targetType) {
 		return new StringToEnum(targetType);
 	}
 
-
 	private class StringToEnum<T extends Enum> implements Converter<String, T>, ConverterInfo {
 
 		private final Class<T> enumType;
@@ -50,7 +49,7 @@ class StringToEnumFactory implements ConverterFactory<String, Enum> {
 			return this.enumType;
 		}
 
-		public T convert(String source) throws Exception {
+		public T convert(String source) {
 			if ("".equals(source)) {
 				// It's an empty enum identifier: reset the enum value to null.
 				return null;

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToFloat.java

@@ -1,34 +0,0 @@
-/*
- * Copyright 2002-2009 the original author or authors.
- * 
- * Licensed 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.springframework.core.convert.support;
-
-import org.springframework.core.convert.converter.Converter;
-import org.springframework.util.NumberUtils;
-
-/**
- * Converts a String to Float.
- *
- * @author Keith Donald
- * @since 3.0
- */
-class StringToFloat implements Converter<String, Float> {
-
-	public Float convert(String source) {
-		return NumberUtils.parseNumber(source, Float.class);
-	}
-
-}

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToInteger.java

@@ -1,34 +0,0 @@
-/*
- * Copyright 2002-2009 the original author or authors.
- *
- * Licensed 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.springframework.core.convert.support;
-
-import org.springframework.core.convert.converter.Converter;
-import org.springframework.util.NumberUtils;
-
-/**
- * Converts a String to an Integer.
- *
- * @author Keith Donald
- * @since 3.0
- */
-class StringToInteger implements Converter<String, Integer> {
-
-	public Integer convert(String source) {
-		return NumberUtils.parseNumber(source, Integer.class);
-	}
-
-}

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToLocaleConverter.java

@@ -27,7 +27,7 @@ import org.springframework.util.StringUtils;
  * @author Keith Donald
  * @since 3.0
  */
-class StringToLocale implements Converter<String, Locale> {
+class StringToLocaleConverter implements Converter<String, Locale> {
 
 	public Locale convert(String source) {
 		return StringUtils.parseLocaleString(source);

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToLong.java

@@ -1,34 +0,0 @@
-/*
- * Copyright 2002-2009 the original author or authors.
- *
- * Licensed 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.springframework.core.convert.support;
-
-import org.springframework.core.convert.converter.Converter;
-import org.springframework.util.NumberUtils;
-
-/**
- * Converts a String to a Long.
- *
- * @author Keith Donald
- * @since 3.0
- */
-class StringToLong implements Converter<String, Long> {
-
-	public Long convert(String source) {
-		return NumberUtils.parseNumber(source, Long.class);
-	}
-
-}

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToMap.java

@@ -32,7 +32,6 @@ import org.springframework.core.convert.TypeDescriptor;
  * @author Keith Donald
  * @since 3.0
  */
-@SuppressWarnings("unchecked")
 class StringToMap implements ConversionExecutor {
 
 	private StringArrayToMap converter;

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToNumberConverterFactory.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2002-2009 the original author or authors.
+ *
+ * Licensed 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.springframework.core.convert.support;
+
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.core.convert.converter.ConverterFactory;
+import org.springframework.util.NumberUtils;
+
+/**
+ * Converts from a String any JDK-standard Number implementation.
+ *
+ * <p>Support Number classes including Byte, Short, Integer, Float, Double, Long, BigInteger, BigDecimal. This class
+ * delegates to {@link NumberUtils#parseNumber(String, Class)} to perform the conversion.
+ *
+ * @author Keith Donald
+ * @since 3.0
+ * @see java.lang.Byte
+ * @see java.lang.Short
+ * @see java.lang.Integer
+ * @see java.lang.Long
+ * @see java.math.BigInteger
+ * @see java.lang.Float
+ * @see java.lang.Double
+ * @see java.math.BigDecimal
+ * @see NumberUtils
+ */
+class StringToNumberConverterFactory implements ConverterFactory<String, Number> {
+
+	public <T extends Number> Converter<String, T> getConverter(Class<T> targetType) {
+		return new StringToNumber<T>(targetType);
+	}
+
+	private static class StringToNumber<T extends Number> implements Converter<String, T> {
+
+		private final Class<T> targetType;
+		
+		public StringToNumber(Class<T> targetType) {
+			this.targetType = targetType;
+		}
+	
+		public T convert(String source) {
+			return NumberUtils.parseNumber(source, targetType);
+		}
+	}
+
+}

org.springframework.core/src/main/java/org/springframework/core/convert/support/StringToShort.java

@@ -1,34 +0,0 @@
-/*
- * Copyright 2002-2009 the original author or authors.
- *
- * Licensed 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.springframework.core.convert.support;
-
-import org.springframework.core.convert.converter.Converter;
-import org.springframework.util.NumberUtils;
-
-/**
- * Converts a String to a Short.
- *
- * @author Keith Donald
- * @since 3.0
- */
-class StringToShort implements Converter<String, Short> {
-
-	public Short convert(String source) {
-		return NumberUtils.parseNumber(source, Short.class);
-	}
-
-}