HasBatteries.java Source code

Introduction

Here is the source code for HasBatteries.java

Source

// : c10:ToyTest.java
// Testing class Class.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

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 {

    static void printInfo(Class cc) {
        System.out.println("Class name: " + cc.getName() + " is interface? [" + cc.isInterface() + "]");
    }

    public static void main(String[] args) {
        Class c = null;
        try {
            c = Class.forName("FancyToy");
        } catch (ClassNotFoundException e) {
            System.out.println("Can't find FancyToy");
            System.exit(1);
        }
        printInfo(c);
        Class[] faces = c.getInterfaces();
        for (int i = 0; i < faces.length; i++)
            printInfo(faces[i]);
        Class cy = c.getSuperclass();
        Object o = null;
        try {
            // Requires default constructor:
            o = cy.newInstance(); // (*1*)
        } catch (InstantiationException e) {
            System.out.println("Cannot instantiate");
            System.exit(1);
        } catch (IllegalAccessException e) {
            System.out.println("Cannot access");
            System.exit(1);
        }
        printInfo(o.getClass());

    }
} ///:~