java. Strategy design pattern with general return type

I want to make a strategy design pattern exemple in order to use it in my java application. So i have one function with tow possible value return types:

int[][] getMatrix();
double[][] getMatrix();

I tried this:

//the strategy interface
public interface TutoInterface<T>{    
    T[][] getMatrix();   

and one of the tow classes that implements TutoInterface:

//strategy 1
public class Tuto implements TutoInterface<int> {

    int[][] getMatrix() {
        //some code

But the error indicated in the netbeans IDE is that int is not an object, so how can i do it?

You can use hash structures, for example, Hash Table (

The time of insertion and check is guaranteed to be O(1). However, in the simplest form this structure is probabilistic. Still works fine for the majority of applications.

Java: The Strategy Pattern, The Strategy pattern is a classic GoF design pattern. This view of the Strategy pattern is nearly identical to that of interfaces in general: So long method above without arguments and with a void return type, we can define it� A Java Strategy Design Pattern example. In an effort to demonstrate a Java Strategy Pattern example, I've created a modified version of the Java Strategy Pattern example on the Wikipedia website. I thought this would be good so you can see two example Java Strategy Pattern examples with a similar code base.

Did you try using hash table? In most of cases complexity of inserting is O(1) and checking is O(1), but the data is not stored in order of insertion. You can combine this structure with a double-ended list of metadata, which you can iterate in order of insertion.

Strategy Pattern with Specific Return Types? - MSDN, Basically I want to use a strategy pattern to parse the specific types of be tu use the Abstract Factory and Factory Method patterns instead of Strategy, Please note that you could provide a general implementation for the� Strategy pattern is also known as Policy Pattern. We define multiple algorithms and let client application pass the algorithm to be used as a parameter. One of the best example of strategy pattern is Collections.sort()method that takes Comparator parameter.

If you simply save element in the hash table there can be primary clustering problem. You can use hash-table with chaining.

Search- O(1) Insert- O(1) Delete- O(n) Find- O(n)

Design pattern with different return type, Use the "component strategy / pattern" (or whatever):. Hide Copy Code. Public Class A { } Public Class B { public A ClassA {get;set;} . in Java. Strategy is a behavioral design pattern that turns a set of behaviors into objects and makes them interchangeable inside original context object. The original object, called context, holds a reference to a strategy object and delegates it executing the behavior. In order to change the way the context performs its work, other objects may replace the currently linked strategy object with another one.

Strategy pattern, In computer programming, the strategy pattern is a behavioral software design pattern that the strategy pattern to select a validation algorithm depending on the type of data, the First, Context calls algorithm() on a Strategy1 object, which performs the algorithm and returns the result to Context . Java Design Patterns. Strategy pattern allows choosing the best suited algorithm at runtime. Wikipedia says In computer programming, the strategy pattern (also known as the policy pattern) is a behavioral software design pattern that enables selecting an algorithm at runtime.

Strategy Design Pattern in Java - Example Tutorial, Strategy Design Pattern in Java Example Tutorial. Strategy Pattern Class Diagram, example code of strategy algorithms at runtime. upcCode=upc; this. price=cost; } public String getUpcCode() { return upcCode; } public int well done , but as i know with Strategy Design Pattern the Object of the class will change his Type Strategy Pattern. A Strategy Pattern says that "defines a family of functionality, encapsulate each one, and make them interchangeable". The Strategy Pattern is also known as Policy. Benefits: It provides a substitute to subclassing. It defines each behavior within its own class, eliminating the need for conditional statements.

Strategy Design Pattern, A generic value of the software community for years has been, "maximize cohesion and minimize coupling". The object-oriented design approach shown in figure� Welcome to the 123rd edition of The Java(tm) Specialists' Newsletter, where we look at what happens when you combine the Strategy Pattern with Generics.This has been one of the most difficult and time-consuming newsletters to write, and I am grateful to the following people for providing valuable input: Angelika Langer, Philip Wadler, Maurice Naftalin and Kirk Pepperdine.

  • Or in case you want a structure that allows usage of random access iterator you can use C# list / C++ vector instead of a noded list,