Create the class using the Singleton pattern. - Java Design Pattern

Java examples for Design Pattern:Singleton pattern

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Description

Create the class using the Singleton pattern.

Demo Code

import java.util.ArrayList;
import java.util.List;

class MyClass {/*from  ww  w  . j av  a2  s  . c om*/

  private static final MyClass instance = new MyClass();

  private List teams = new ArrayList();

  /**
   * Constructor has been made private so that outside classes do not have
   * access to instantiate more instances of Statistics.
   */
  private MyClass() {
  }

  /**
   * Accessor for the statistics class. Only allows for one instance of the
   * class to be created.
   * 
   * @return
   */
  public static MyClass getInstance() {

    return instance;
  }

  /**
   * @return the teams
   */
  public List getTeams() {
    return teams;
  }

  /**
   * @param teams
   *          the teams to set
   */
  public void setTeams(List teams) {
    this.teams = teams;
  }

  protected Object readResolve() {
    return instance;
  }

}

Statistics Singleton that was defined in solution 1 to this recipe. 

MyClass a = MyClass.getInstance(); 
List teams = a.getTeams();

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