Click here to watch in Youtube :
https://www.youtube.com/watch?v=ptvG7KBgTp8&list=UUhwKlOVR041tngjerWxVccw
Click the below Image to Enlarge
Java Tutorial: Java Generics[Define a generic method which accepts Type parameter with single bound] |
public class Box<T> { private T t; public void set(T t) { this.t = t; } public T get() { return t; } public <U extends Number> void inspect(U u) { System.out.println("T: " + t.getClass().getName()); System.out.println("U: " + u.getClass().getName()); } }GenericDemo.java
public class GenericDemo { public static void main(String[] args) { Box<Integer> integerBox = new Box<Integer>(); integerBox.set(new Integer(100)); integerBox.inspect(new Integer(200)); System.out.println("-------------------"); integerBox.inspect(new Double(20.23)); System.out.println("-------------------"); integerBox.inspect(new Long(2000)); /* * error: this is still String! */ //integerBox.inspect("some text"); } }Output
T: java.lang.Integer U: java.lang.Integer ------------------- T: java.lang.Integer U: java.lang.Double ------------------- T: java.lang.Integer U: java.lang.LongClick the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/GenericsDemo_Bounded_TP_App.zip?attredirects=0&d=1
Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/GenericsDemo_Bounded_TP_App
Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/539015917c8406e4be671410d713073b3971d1a5/BasicJava/GenericsDemo_Bounded_TP_App/?at=master
See also:
No comments:
Post a Comment