ClassUtils recognizes "void" as primitive type name as well (SPR-7212)

org.springframework.core/src/main/java/org/springframework/util/ClassUtils.java

@@ -89,7 +89,7 @@ public abstract class ClassUtils {
 	 * Map with primitive type name as key and corresponding primitive
 	 * type as value, for example: "int" -> "int.class".
 	 */
-	private static final Map<String, Class<?>> primitiveTypeNameMap = new HashMap<String, Class<?>>(16);
+	private static final Map<String, Class<?>> primitiveTypeNameMap = new HashMap<String, Class<?>>(32);
 
 	/**
 	 * Map with common "java.lang" class name as key and corresponding Class as value.
@@ -113,11 +113,12 @@ public abstract class ClassUtils {
 			registerCommonClasses(entry.getKey());
 		}
 
-		Set<Class<?>> primitiveTypes = new HashSet<Class<?>>(16);
+		Set<Class<?>> primitiveTypes = new HashSet<Class<?>>(32);
 		primitiveTypes.addAll(primitiveWrapperTypeMap.values());
 		primitiveTypes.addAll(Arrays.asList(
 				boolean[].class, byte[].class, char[].class, double[].class,
 				float[].class, int[].class, long[].class, short[].class));
+		primitiveTypes.add(void.class);
 		for (Class<?> primitiveType : primitiveTypes) {
 			primitiveTypeNameMap.put(primitiveType.getName(), primitiveType);
 		}

org.springframework.core/src/test/java/org/springframework/util/ClassUtilsTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2007 the original author or authors.
+ * Copyright 2002-2010 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.
@@ -28,7 +28,6 @@ import java.util.List;
 
 import junit.framework.TestCase;
 
-import org.junit.Ignore;
 import org.springframework.beans.DerivedTestBean;
 import org.springframework.beans.IOther;
 import org.springframework.beans.ITestBean;
@@ -76,6 +75,7 @@ public class ClassUtilsTests extends TestCase {
 		assertEquals(long.class, ClassUtils.forName("long"));
 		assertEquals(float.class, ClassUtils.forName("float"));
 		assertEquals(double.class, ClassUtils.forName("double"));
+		assertEquals(void.class, ClassUtils.forName("void"));
 	}
 
 	public void testForNameWithPrimitiveArrays() throws ClassNotFoundException {