import java.lang.reflect.*;

public class ReflectionDemo
{
	private static String name;
	private static int blanks;

	public static void main(String[] args)
	{
		if (args.length != 1)
		{
			System.out
			        .println("\nERROR: You should give a name of ONE class !");
			return;
		}
		name = args[0];
		Class classObj;
		try
		{
			classObj = Class.forName(name);
			System.out
			        .println("The following report regards " + name + " : \n");
			if (!printSuperClasses(classObj))
			{
				System.out.println("This classObj doesn't"
				        + " extend any other classObj !");
			}
			printConstructors(classObj);
			printMethods(classObj);
			printFields(classObj);
		} catch (ClassNotFoundException e)
		{
			System.out.println("Class not found.");
		}
	}

	public static void printBlanks()
	{
		for (int i = 0; i < blanks; i++)
		{
			System.out.print(" ");
		}
	}

	public static boolean printSuperClasses(Class classObj)
	{
		if (classObj == null)
		{
			return false;
		} else
		{
			printSuperClasses(classObj.getSuperclass());
			System.out.println(classObj.getName());
			if (!classObj.getName().equals(name))
			{
				printBlanks();
				System.out.println("|");
				printBlanks();
				System.out.print("+--");
				blanks += (classObj.getName().length());
			}
			return true;
		}
	}

	public static void printConstructors(Class classObj)
	{
		Constructor[] constructors = classObj.getDeclaredConstructors();
		System.out.println("\nCONSTRUCTORS");
		System.out.println("============");
		for (int i = 0; i < constructors.length; i++)
		{
			System.out.println("constructor num." + (i + 1));
			System.out.println("-----------------");
			Constructor c = constructors[i];
			Class[] paramTypes = c.getParameterTypes();
			String constructorName = c.getName();
			System.out.print(Modifier.toString(c.getModifiers()));
			System.out.print(constructorName + "(");
			for (int j = 0; j < paramTypes.length; j++)
			{
				if (j > 0)
				{
					System.out.print(" , ");
				}
				System.out.print(paramTypes[j].getName());
			}
			System.out.println(");");
		}
	}

	public static void printMethods(Class classObj)
	{
		Method[] methods = classObj.getDeclaredMethods();
		System.out.println("\nMETHODS");
		System.out.println("=======");
		for (int i = 0; i < methods.length; i++)
		{
			System.out.println("method num." + (i + 1));
			System.out.println("------------");
			Method m = methods[i];
			Class retType = m.getReturnType();
			Class[] paramTypes = m.getParameterTypes();
			String methodName = m.getName();
			System.out.print(Modifier.toString(m.getModifiers()));
			System.out.print(retType.getName() + " " + methodName + "(");
			for (int j = 0; j < paramTypes.length; j++)
			{
				if (j >= 0)
				{
					if (j > 0)
						System.out.print(", ");
					System.out.print(paramTypes[j].getName());
				}
			}
			System.out.println(");");
		}
	}

	public static void printFields(Class cl)
	{
		Field[] fields = cl.getDeclaredFields();
		System.out.println("\nFIELDS");
		System.out.println("======");
		for (int i = 0; i < fields.length; i++)
		{
			System.out.println("field num." + (i + 1));
			System.out.println("-----------");
			Field f = fields[i];
			Class type = f.getType();
			String fieldName = f.getName();
			System.out.print(Modifier.toString(f.getModifiers()));
			System.out.println(" " + type.getName() + " " + fieldName + ";");
		}
	}
}