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Revised: Wed May 11 17:44:56 CDT 2016
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This module is one in a collection of modules on Java Generics designed for teaching ITSE2317 - Java Programming (Intermediate) at Austin Community College in Austin, TX.
This and future modules in this series will be based on the Generics (Updated) section of The Java Tutorials from Oracle. (In the event that these links become broken, you should have no difficulty finding the Oracle material with an online search.)
You will find the learning resources for this module on the Oracle site at:
This module contains review questions and answers keyed to the material in the above list.
Once you study that material, you should be able to answer the review questions in this module.
Once you complete your study of all the material on generics , you should be able to answer the review questions at Questions and Exercises on the Oracle site.
The questions and the answers in this module are connected by hyperlinks to make it easy for you to navigate from the question to the answer and back again.
True or False: Generics add stability to your code by making more of your bugs detectable at runtime.
True or False: Generics enable types (classes and interfaces) to be parameters when defining classes, interfaces and methods.
True or False: Type parameters provide a way for you to re-use the same code with different inputs. The inputs to type parameters are values.
True or False: Code that uses generics provides the following benefits over non-generic code:
True or False: A generic type is a generic class or interface that is parameterized over types.
True or False: The code shown in Listing 1 will compile and run successfully producing the output shown in Figure 1 .
| Listing 1 - Question 6. |
|---|
/*File Q06.java
************************************************/public class Q06{public static void main(String[] args){Box box = new Box();
box.set(new Integer(5));System.out.println(
((Integer)(box.get())).intValue());}//end main
}//end class Q06class Box{
private Object object;public void set(Object object){
this.object = object;}//end setpublic Object get(){
return object;}//end get
}//end Box//=============================================// |
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