ToyTest.java

//: typeinfo/toys/ToyTest.java
// Testing class Class.

package thinkinginjava.typeinfo;

interface HasBatteries {
}

interface Waterproof {
}

interface Shoots {
}

class Toy {
	// Comment out the following default constructor
	// to see NoSuchMethodError from (*1*)
	/*
	 * Toy() { }
	 */
	Toy(int i) {
	}
}

class FancyToy extends Toy implements HasBatteries, Waterproof, Shoots {
	FancyToy() {
		super(1);
	}
}

public class ToyTest {
	public static void print(Object s) {
		System.out.println(s);
	}

	static void printInfo(Class cc) {
		print("Class name: " + cc.getName() + " is interface? ["
				+ cc.isInterface() + "]");
		print("Simple name: " + cc.getSimpleName());
		print("Canonical name : " + cc.getCanonicalName());
	}

	public static void main(String[] args) {
		Class c = null;
		try {
			c = Class.forName("thinkinginjava.typeinfo.FancyToy");
		} catch (ClassNotFoundException e) {
			print("Can't find FancyToy");
			System.exit(1);
		}
		printInfo(c);
		
		for (Class face : c.getInterfaces())
			printInfo(face);
		Class up = c.getSuperclass();
		Object obj = null;
		try {
			// Requires default constructor:
			obj = up.newInstance();
		} catch (InstantiationException e) {
			print("Cannot instantiate");
			System.exit(1);
		} catch (IllegalAccessException e) {
			print("Cannot access");
			System.exit(1);
		}
		printInfo(obj.getClass());
	}
}