Failed to getEnclosiongMethod() of local or anonymous class in lambda.

FailedToGetEnclosingMethod.java

import java.lang.reflect.Method;

/**
 * Failed to getEnclosiongMethod() of local or anonymous class in lambda.
 */
public class FailedToGetEnclosingMethod {

	public static void main(String[] args) throws Exception {
		System.out.println(System.getProperty("java.vendor"));
		System.out.println(System.getProperty("java.version"));
		System.out.println(System.getProperty("java.vm.version"));
		System.out.println(System.getProperty("os.name"));
		System.out.println(System.getProperty("os.arch"));
		System.out.println(System.getProperty("os.version"));
		System.out.println();

		Runnable a = () -> {
			class LocalClass {
			}
			Class<?> clazz = LocalClass.class;
			// or
			// Class<?> clazz = new Object(){}.getClass();

			try {
				clazz.getEnclosingMethod();
			} catch (Error e) {
				e.printStackTrace(System.out);
			}

			try {

				System.out.println();
				Object enclosingMethodInfo = getter(clazz, "getEnclosingMethodInfo");
				Object name = getter(enclosingMethodInfo, "getName");
				System.out.println("EnclosingMethod: " + name);

				System.out.println();

				Class<?> enclosingClass = clazz.getEnclosingClass();
				for (Method method : enclosingClass.getDeclaredMethods()) {
					if (method.getName().contains("lambda")) {
						System.out.println(method);
					}
				}

			} catch (Exception e) {
				e.printStackTrace();
			}

		};
		a.run();
	}

	/** invoke getter */
	public static Object getter(Object target, String methodName) throws Exception {
		Class<?> clazz = target.getClass();
		Method method = clazz.getDeclaredMethod(methodName);
		method.setAccessible(true);
		return method.invoke(target);
	}

}

result.txt

Oracle Corporation
1.8.0_65
25.65-b01
Windows 7
x86
6.1

java.lang.InternalError: Enclosing method not found
	at java.lang.Class.getEnclosingMethod(Unknown Source)
	at FailedToGetEnclosingMethod.lambda$0(FailedToGetEnclosingMethod.java:25)
	at FailedToGetEnclosingMethod.main(FailedToGetEnclosingMethod.java:51)

EnclosingMethod: lambda$1

private static void FailedToGetEnclosingMethod.lambda$0()