ObjectToObject converter now only matches public methods/constructors; private class method invocations also supported now through a makeAccessible call

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

@@ -60,6 +60,7 @@ final class ObjectToObjectConverter implements ConditionalGenericConverter {
 		Object target;
 		Method method = getValueOfMethodOn(targetClass, sourceClass);
 		if (method != null) {
+			ReflectionUtils.makeAccessible(method);
 			target = ReflectionUtils.invokeMethod(method, null, source);
 		}
 		else {

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

@@ -558,7 +558,7 @@ public abstract class ClassUtils {
 
 
 	/**
-	 * Determine whether the given class has a constructor with the given signature.
+	 * Determine whether the given class has a public constructor with the given signature.
 	 * <p>Essentially translates <code>NoSuchMethodException</code> to "false".
 	 * @param clazz	the clazz to analyze
 	 * @param paramTypes the parameter types of the method
@@ -570,7 +570,7 @@ public abstract class ClassUtils {
 	}
 
 	/**
-	 * Determine whether the given class has a constructor with the given signature,
+	 * Determine whether the given class has a public constructor with the given signature,
 	 * and return it if available (else return <code>null</code>).
 	 * <p>Essentially translates <code>NoSuchMethodException</code> to <code>null</code>.
 	 * @param clazz	the clazz to analyze
@@ -717,7 +717,7 @@ public abstract class ClassUtils {
 	}
 
 	/**
-	 * Return a static method of a class.
+	 * Return a public static method of a class.
 	 * @param methodName the static method name
 	 * @param clazz	the class which defines the method
 	 * @param args the parameter types to the method
@@ -728,8 +728,8 @@ public abstract class ClassUtils {
 		Assert.notNull(clazz, "Class must not be null");
 		Assert.notNull(methodName, "Method name must not be null");
 		try {
-			Method method = clazz.getDeclaredMethod(methodName, args);
-			return ((method.getModifiers() & Modifier.STATIC) != 0 ? method : null);
+			Method method = clazz.getMethod(methodName, args);
+			return Modifier.isStatic(method.getModifiers()) ? method : null;
 		}
 		catch (NoSuchMethodException ex) {
 			return null;

org.springframework.core/src/test/java/org/springframework/core/convert/support/DefaultConversionTests.java

@@ -597,8 +597,7 @@ public class DefaultConversionTests {
 	}
 
 	@Test
-	@Ignore
-	public void convertObjectToObjectValueOFMethod() {
+	public void convertObjectToObjectValueOfMethod() {
 		assertEquals(ISBN.valueOf("123456789"), conversionService.convert("123456789", ISBN.class));
 	}
 
@@ -614,6 +613,7 @@ public class DefaultConversionTests {
 	}
 
 	private static class SSN {
+		
 		private String value;
 		
 		public SSN(String value) {