Wie kann ich eine 2D-Liste mit mindestens 1000 Objekten optimieren und durchlaufen?

Question

Ich habe derzeit eine 2D-Liste, in der je nach Datum bestimmte Daten ausgewählt werden. Ich habe eine Methode, wo es auf die Daten schaut, und wenn es wahr ist, wird es die Zeilen an eine andere Liste anhängen. Derzeit, da die Hauptliste ungefähr 1000 Objekte enthält, läuft mein Code langsam und ich finde keinen Weg, die Ergebnisse zu optimieren.

import java.text.ParseException; 
import java.text.SimpleDateFormat; 
import java.util.ArrayList; 
import java.util.Arrays; 
import java.util.Calendar; 
import java.util.Date; 
import java.util.LinkedHashSet; 
import java.util.List; 

import customAdapters.Fixtures; 


public class temp { 

Fixtures fixtures = new Fixtures(); 
SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd"); 
ArrayList<Date> team_fix_date = new ArrayList<>(); 
public ArrayList<String> betWeek = new ArrayList<>(); 
public List<List<String>> gamesTwo = new ArrayList<>(); 


public void matchesByDate(){ 


    for (int i = 0; i < fixtures.allLeagues.size(); i++) { 

     String week = fixtures.allLeagues.get(i).get(3); 

     try { 

      Date date = formatter.parse(week); 

      team_fix_date.add(date); 


     } catch (ParseException e) { 
      e.printStackTrace(); 
     } 
    } 


} 

public void dayTwo() { 

    matchesByDate(); 

    Date date = new Date(); 
    Date today = new Date(date.getDay()-1); 
    Date date_5; 
    Calendar cal2 = Calendar.getInstance(); 
    cal2.clear(Calendar.HOUR_OF_DAY); 
    cal2.clear(Calendar.AM_PM); 
    cal2.clear(Calendar.MINUTE); 
    cal2.clear(Calendar.SECOND); 
    cal2.clear(Calendar.MILLISECOND); 
    cal2.setTime(date); 
    cal2.add(Calendar.DATE, 5); 



    ArrayList<Date> dateMatches = team_fix_date; 


    date_5 = cal2.getTime(); 



    for (Date date_matches: dateMatches) { 
     SimpleDateFormat ft = new SimpleDateFormat("yyyy/MM/dd"); 
     if (date_matches.after(today) && date_matches.before(date_5)) { 
      betWeek.add(ft.format(date_matches)); 
      betWeek = new ArrayList<>(new LinkedHashSet<>(betWeek)); 
     } 

    } 

} 

public List<String> weekMatches(int x) { 

    dayTwo(); 


    for(String dates: betWeek) { 
     if (dates.equals(fixtures.allLeagues.get(x).get(3))) 

      return fixtures.allLeagues.get(x); 
    } 
    return null; 

} 

public void addMatchesByDateTwo(){ 

    for (int x = 0; x < fixtures.allLeagues.size(); x++) { 

     if (weekMatches(x) != null) 
      gamesTwo.add(Arrays.asList(weekMatches(x).get(0), weekMatches (x).get(1), 
        weekMatches(x).get(2))); 

     } 


    } 

} 

Answer 1

Dieser Code ist wirklich wirklich schrecklich. Warum fügen Sie einer Liste vier Eigenschaftenwerte hinzu, anstatt eine Klasse mit vier Eigenschaften zu erstellen, wie OOP? Dies verhindert möglicherweise auch die zeitaufwändigen Konvertierungen von Zeichenfolge zu Datum, die Sie jedes Mal aufrufen.

Warum halten Sie sich nicht an Namenskonventionen, wie Großbuchstaben Klassennamen?

'if (WocheMatches (x)! = Null) gamesTwo.add (Arrays.asList (WocheMatches (x) .get (0), WocheMatches (x) .get (1), weekMatches (x) .get (2))); ist dein grundlegendes Problem. Sie erinnern sich und rufen ab und erinnern sich an den gesamten Filterprozess der Liste. Speichere es in einer Variablen!

Verwenden Sie for-each-Schleifen, um den Code lesbarer zu machen.

In jeder WocheMatches() rufen Sie das team_fix_date um alle Spieldaten zu erweitern ... RIESIGE LISTE. Dies sollte einmal im CTOR erfolgen.

Und Theres so viel mehr so ​​falsch mit diesem Code, ich werde hier aufhören. Zu sagen, dass Sie wirklich wirklich in den Griff bekommen sollten, was Sie nicht erreichen können.

Ich habe diesen Code in den folgenden Bereich umstrukturiert. Probieren Sie es aus:

import java.text.ParseException; 
import java.text.SimpleDateFormat; 
import java.util.ArrayList; 
import java.util.Calendar; 
import java.util.Date; 
import java.util.HashSet; 
import java.util.List; 



public class InefficientDateShit { 
    public static void main(final String[] args) throws ParseException { 
     new Temp(); 
    } 
} 



class Temp { 
    static public final SimpleDateFormat formatter  = new SimpleDateFormat("yyyy/MM/dd"); 

    private final Fixtures     fixtures; 
    private final HashSet<Date>    team_fix_date = new HashSet<>(); 
    private final HashSet<Date>    betWeek   = new HashSet<>(); 
    private final List<Game>    gamesTwo  = new ArrayList<>(); 


    public Temp() throws ParseException { 
     fixtures = new Fixtures(); 

     // former matchesByDate() 
     for (final Game game : fixtures.allLeagues) { 
      team_fix_date.add(game.getDate()); 
     } 

     // former dayTwo() 
     final Date date = new Date(); 
     final Date today = new Date(date.getDay() - 1); 
     Date date_5; 
     final Calendar cal2 = Calendar.getInstance(); 
     cal2.clear(Calendar.HOUR_OF_DAY); 
     cal2.clear(Calendar.AM_PM); 
     cal2.clear(Calendar.MINUTE); 
     cal2.clear(Calendar.SECOND); 
     cal2.clear(Calendar.MILLISECOND); 
     cal2.setTime(date); 
     cal2.add(Calendar.DATE, 5); 
     date_5 = cal2.getTime(); 
     for (final Date date_matches : team_fix_date) { 
      if (date_matches.after(today) && date_matches.before(date_5)) { 
       betWeek.add(date_matches); 
      } 
     } 
    } 

    public void addMatchesByDateTwo() { 
     for (final Game game : fixtures.allLeagues) { 
      final boolean matches = betWeek.contains(game.getDate()); // formerly done by weekMatches() 
      if (matches) gamesTwo.add(game); 
     } 
    } 
} 



class Game { 
    private final String mLeague; 
    private final String mTeam1; 
    private final String mTeam2; 
    private final Date  mDate; 

    public Game(final String pLeague, final String pTeam1, final String pTeam2, final Date pDate) { 
     mLeague = pLeague; 
     mTeam1 = pTeam1; 
     mTeam2 = pTeam2; 
     mDate = pDate; 
    } 

    public String getLeague() { 
     return mLeague; 
    } 
    public String getTeam1() { 
     return mTeam1; 
    } 
    public String getTeam2() { 
     return mTeam2; 
    } 
    public Date getDate() { 
     return mDate; 
    } 
} 



class Fixtures { 
    public List<Game> allLeagues = new ArrayList<>(); 

    public Fixtures() throws ParseException { 
     initFixtureBPL(); 
    } 

    private void initFixtureBPL() throws ParseException { 
     addGame("BRASILEIRAO SERIE A", "Flamengo", "Atletico-PR", "2016/08/06"); 
     addGame("BRASILEIRAO SERIE A", "America-MG", "Santos", "2016/08/07"); 
     addGame("BRASILEIRAO SERIE A", "Figueirense", "Sport Recife", "2016/08/07"); 
     addGame("BRASILEIRAO SERIE A", "Coritiba", "Ponte Preta", "2016/08/07"); 
     addGame("BRASILEIRAO SERIE A", "Palmeiras", "Vitoria", "2016/08/07"); 
     addGame("BRASILEIRAO SERIE A", "Internacional", " Fluminense", "2016/08/07"); 
     addGame("BRASILEIRAO SERIE A", "Santa Cruz", "Sao Paulo", "2016/08/07"); 
     addGame("BRASILEIRAO SERIE A", "Botafogo", "Gremio", "2016/08/07"); 
     addGame("BRASILEIRAO SERIE A", "Atletico-MG", "Chapecoense-SC", "2016/08/07"); 
     addGame("BRASILEIRAO SERIE A", "Corinthians", "Cruzeiro", "2016/08/07"); 

     addGame("BRASILEIRAO SERIE A", "Vitoria", "Santa Cruz", "2016/08/13"); 
     addGame("BRASILEIRAO SERIE A", "Ponte Preta", "Figueirense", "2016/08/13"); 
     addGame("BRASILEIRAO SERIE A", "Sport Recife", "Flamengo", "2016/08/13"); 
     addGame("BRASILEIRAO SERIE A", "Fluminense", "America-MG", "2016/08/14"); 
     addGame("BRASILEIRAO SERIE A", "Gremio", "Corinthians", "2016/08/14"); 
     addGame("BRASILEIRAO SERIE A", "Cruzeiro", " Coritiba", "2016/08/14"); 
     addGame("BRASILEIRAO SERIE A", "Santos", "Atletico-MG", "2016/08/14"); 
     addGame("BRASILEIRAO SERIE A", "Sao Paulo", "Botafogo", "2016/08/14"); 
     addGame("BRASILEIRAO SERIE A", "Atletico-PR", "Palmeiras", "2016/08/14"); 
     addGame("BRASILEIRAO SERIE A", "Chapecoense-SC", "Internacional", "2016/08/15"); 

     addGame("BRASILEIRAO SERIE A", "Corinthians", "Vitoria", "2016/08/20"); 
     addGame("BRASILEIRAO SERIE A", "America-MG", "Chapecoense-SC", "2016/08/19"); 
     addGame("BRASILEIRAO SERIE A", "Botafogo", "Sport Recife", "2016/08/20"); 
     addGame("BRASILEIRAO SERIE A", "Atletico-MG", "Atletico-PR", "2016/08/21"); 
     addGame("BRASILEIRAO SERIE A", "Flamengo", "Gremio", "2016/08/21"); 
     addGame("BRASILEIRAO SERIE A", "Internacional", "Sao Paulo", "2016/08/21"); 
     addGame("BRASILEIRAO SERIE A", "Palmeiras", "Ponte Preta", "2016/08/21"); 
     addGame("BRASILEIRAO SERIE A", "Santa Cruz", "Fluminense", "2016/08/21"); 
     addGame("BRASILEIRAO SERIE A", "Figueirense", "Cruzeiro", "2016/08/21"); 
     addGame("BRASILEIRAO SERIE A", "Coritiba", "Santos", "2016/08/22"); 

     addGame("PRIMERA DIVISION CHILE", "Cobresal", "S. Wanderers", "2016/08/08"); 
     addGame("PRIMERA DIVISION CHILE", "O'Higgins ", "U. Catolica", "2016/08/08"); 
     addGame("PRIMERA DIVISION CHILE", "Palestino", "Huachipato", "2016/08/08"); 
     addGame("PRIMERA DIVISION CHILE", "U. De Chile", "Antofagasta", "2016/08/08"); 
     addGame("PRIMERA DIVISION CHILE", "Palestino", "Huachipato", "2016/08/08"); 
     addGame("PRIMERA DIVISION CHILE", "U. Espanola", "U. De Concepcion", "2016/08/08"); 
     addGame("PRIMERA DIVISION CHILE", "Deportes Temuco", "Deportes Iquique", "2016/08/08"); 
     addGame("PRIMERA DIVISION CHILE", "A. Italiano", "Colo Colo", "2016/08/08"); 

     addGame("PRIMERA DIVISION CHILE", "Antofagasta", "Cobresal", "2016/08/14"); 
     addGame("PRIMERA DIVISION CHILE", "Colo Colo", "Deportes Temuco", "2016/08/14"); 
     addGame("PRIMERA DIVISION CHILE", "Deportes Iquique", "O'Higgins", "2016/08/14"); 
     addGame("PRIMERA DIVISION CHILE", "Huachipato", "U. Espanola", "2016/08/14"); 
     addGame("PRIMERA DIVISION CHILE", "S. Wanderers", "A. Italiano", "2016/08/14"); 
     addGame("PRIMERA DIVISION CHILE", "San Luis", "U. De Chile", "2016/08/14"); 
     addGame("PRIMERA DIVISION CHILE", "U. Catolica", "Palestino", "2016/08/14"); 
     addGame("PRIMERA DIVISION CHILE", "U. De Concepcion", "Everton", "2016/08/14"); 

     addGame("PRIMERA DIVISION CHILE", "A. Italiano", "Antofagasta", "2016/08/21"); 
     addGame("PRIMERA DIVISION CHILE", "Cobresal", "Deportes Iquique", "2016/08/21"); 
     addGame("PRIMERA DIVISION CHILE", "Everton", "U. Espanola", "2016/08/21"); 
     addGame("PRIMERA DIVISION CHILE", "Huachipato", "Colo Colo", "2016/08/21"); 
     addGame("PRIMERA DIVISION CHILE", "O'Higgins", "Deportes Temuco", "2016/08/21"); 
     addGame("PRIMERA DIVISION CHILE", "Palestino", "San luis", "2016/08/21"); 
     addGame("PRIMERA DIVISION CHILE", "U. Catolica", "S. Wanderers", "2016/08/21"); 
     addGame("PRIMERA DIVISION CHILE", "U. De Chile", "U. De Concepcion", "2016/08/21"); 

     addGame("ECUADOR SERIE A", "U. Catolica", "Emelec", "2016/08/08"); 
     addGame("ECUADOR SERIE A", "Barcelona SC", "Mushuc Runa", "2016/08/08"); 
     addGame("ECUADOR SERIE A", "Dep. Cuenca", " Aucas", "2016/08/08"); 
     addGame("ECUADOR SERIE A", "Delfin", "River Ecuador", "2016/08/08"); 
     addGame("ECUADOR SERIE A", "Ind. del Valle", "Fuerza A.", "2016/08/08"); 
     addGame("ECUADOR SERIE A", "LDU Quito", "El Nacional", "2016/08/08"); 

     addGame("ECUADOR SERIE A", "Mushuc Runa", "Dep. Cuenca", "2016/08/13"); 
     addGame("ECUADOR SERIE A", "River Ecuador", "LDU Quito", "2016/08/14"); 
     addGame("ECUADOR SERIE A", "El Nacional", "Aucas", "2016/08/14"); 
     addGame("ECUADOR SERIE A", "Ind. del Valle", "U. Catolica", "2016/08/14"); 
     addGame("ECUADOR SERIE A", "Emelec", "Barcelona SC", "2016/08/14"); 
     addGame("ECUADOR SERIE A", "Fuerza A.", " Delfin", "2016/08/14"); 

     addGame("ECUADOR SERIE A", "Aucas", "Mushuc Runa", "2016/08/21"); 
     addGame("ECUADOR SERIE A", "Barcelona SC", "Fuerza A.", "2016/08/21"); 
     addGame("ECUADOR SERIE A", "Delfin", "Ind. del Valle", "2016/08/21"); 
     addGame("ECUADOR SERIE A", "Dep. Cuenca", "River Ecuador", "2016/08/21"); 
     addGame("ECUADOR SERIE A", "LDU Quito", "Emelec", "2016/08/21"); 
     addGame("ECUADOR SERIE A", "U. Católica", "El Nacional", "2016/08/21"); 

     addGame("PRIMERA DIVISION VENEZUELA", "Atl. Venezuela", "Aragua", "2016/08/08"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Dep. Anzoategui", "Estudiantes Caracas", "2016/08/08"); 
     addGame("PRIMERA DIVISION VENEZUELA", "JBL Zulia", "Lara", "2016/08/08"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Portuguesa", "Estudiantes M.", "2016/08/08"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Dep. Petare", "Mineros", "2016/08/08"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Monagas", "Llaneros", "2016/08/08"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Trujillanos", "La Guaira", "2016/08/08"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Urenna", "Caracas", "2016/08/08"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Carabobo", "Dep. Tachira", "2016/08/08"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Zamora", "Zulia", "2016/08/08"); 

     addGame("PRIMERA DIVISION VENEZUELA", "La Guaira", "Atl. Venezuela", "2016/08/14"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Aragua", "Urena", "2016/08/14"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Llaneros", "Dep. Petare", "2016/08/14"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Zulia", "Trujillanos", "2016/08/14"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Estudiantes Caracas", "JBL Zulia", "2016/08/14"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Dep. Tachira", "Dep. Anzoategui", "2016/08/14"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Caracas", "Monagas", "2016/08/14"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Lara", "Estudiantes M.", "2016/08/14"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Mineros", "Carabobo", "2016/08/14"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Zamora", "Portuguesa", "2016/08/14"); 

     addGame("PRIMERA DIVISION VENEZUELA", "JBL Zulia", "Dep. Tachira", "2016/08/21"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Portuguesa", "Lara", "2016/08/21"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Atl. Venezuela", "Zulia", "2016/08/21"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Monagas", "Aragua", "2016/08/21"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Trujillanos", "Zamora", "2016/08/21"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Carabobo", " Llaneros", "2016/08/21"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Dep. Anzoategui", "Mineros", "2016/08/21"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Dep. Petare", "Caracas", "2016/08/21"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Estudiantes de meridas", "Estudiantes Caracas", "2016/08/21"); 
     addGame("PRIMERA DIVISION VENEZUELA", "Ureña", "La Guaira", "2016/08/21"); 

     addGame("LIGA MX", "Veracruz", "America", "2016/08/08"); 
     addGame("LIGA MX", "Cruz Azul", "Tijuana", "2016/08/08"); 
     addGame("LIGA MX", "Morelia", "Atlas", "2016/08/08"); 
     addGame("LIGA MX", "UANL.", "Chiapas", "2016/08/08"); 
     addGame("LIGA MX", "Leon", "Monterrey", "2016/08/08"); 
     addGame("LIGA MX", "Guadalajara", "Queretaro", "2016/08/08"); 
     addGame("LIGA MX", "Necaxa", "UNAM.", "2016/08/08"); 
     addGame("LIGA MX", "Toluca", "Pachuca", "2016/08/08"); 
     addGame("LIGA MX", "Puebla", "Santos Laguna", "2016/08/08"); 

     addGame("LIGA MX", "Tijuana", "Leon", "2016/08/14"); 
     addGame("LIGA MX", "Queretaro ", "Cruz Azul", "2016/08/14"); 
     addGame("LIGA MX", "Atlas ", "Puebla", "2016/08/14"); 
     addGame("LIGA MX", "Monterrey", "Necaxa", "2016/08/14"); 
     addGame("LIGA MX", "Pachuca", "UNAM", "2016/08/14"); 
     addGame("LIGA MX", "America", " Morelia", "2016/08/14"); 
     addGame("LIGA MX", "Toluca", "UANL", "2016/08/14"); 
     addGame("LIGA MX", "Chiapas", "Veracruz", "2016/08/14"); 
     addGame("LIGA MX", "Santos Laguna", "Guadalajara", "2016/08/14"); 

     addGame("LIGA MX", "Veracruz", "Toluca", "2016/07/21"); 
     addGame("LIGA MX", "Chiapas", "Morelia", "2016/07/21"); 
     addGame("LIGA MX", "Cruz Azul", "santos laguna.", "2016/07/21"); 
     addGame("LIGA MX", "Guadalajara", "Atlas", "2016/07/21"); 
     addGame("LIGA MX", "UANL", "Pachuca", "2016/07/21"); 
     addGame("LIGA MX", "Leon", "Queretaro", "2016/08/21"); 
     addGame("LIGA MX", "Necaxa", "Tijuana", "2016/08/21"); 
     addGame("LIGA MX", "UNAM", "Monterrey", "2016/08/21"); 
     addGame("LIGA MX", "Puebla", "America", "2016/08/21"); 

     addGame("MLS", "DC United", "Philadelphia Union", "2016/08/07"); 
     addGame("MLS", "Montreal Impact", "Houston Dynamo", "2016/08/07"); 
     addGame("MLS", "Toronto FC", "New England Revolution", "2016/08/07"); 
     addGame("MLS", "Colorado Rapids", "Vancouver Whitecaps", "2016/08/08"); 
     addGame("MLS", "Real Salt Lake", "Chicago Fire", "2016/08/08"); 
     addGame("MLS", "Portland Timbers", "Sporting Kansas City", "2016/08/08"); 
     addGame("MLS", "Orlando City", "Seattle Sounders", "2016/08/08"); 
     addGame("MLS", "Los Angeles Galaxy", "New York Red Bulls", "2016/08/08"); 

     addGame("MLS", "DC United", "Portland Timbers", "2016/08/13"); 
     addGame("MLS", "New York Red Bulls", "Montreal Impact", "2016/08/13"); 
     addGame("MLS", "Columbus Crew", "New York City", "2016/08/13"); 
     addGame("MLS", "New England Revolution", "Philadelphia Union", "2016/08/13"); 
     addGame("MLS", "FC Dallas", " Sporting Kansas City", "2016/08/13"); 
     addGame("MLS", "Houston Dynamo", "Toronto FC", "2016/08/13"); 
     addGame("MLS", "Los Angeles Galaxy", "Colorado Rapids", "2016/08/13"); 
     addGame("MLS", "Chicago Fire", "Orlando City", "2016/08/14"); 
     addGame("MLS", "Seattle Sounders", "Real Salt Lake", "2016/08/14"); 

     addGame("MLS", "New York City", "Los Angeles Galaxy", "2016/08/20"); 
     addGame("MLS", "Philadelphia Union", "Toronto FC ", "2016/08/20"); 
     addGame("MLS", "Montreal Impact", "Chicago Fire", "2016/08/20"); 
     addGame("MLS", "New England Revolution", "Columbus Crew", "2016/08/20"); 
     addGame("MLS", "Colorado Rapids", "Orlando City ", "2016/08/20"); 
     addGame("MLS", "Real Salt Lake", "FC Dallas", "2016/08/20"); 
     addGame("MLS", "Sporting Kansas City", "Vancouver Whitecaps", "2016/08/20"); 
     addGame("MLS", "DC United", "New York Red Bulls", "2016/08/21"); 
     addGame("MLS", "Seattle Sounders", "Portland Timbers", "2016/08/21"); 

     addGame("J-LEAGUE", "Kashima", "Vegalta Sendai", "2016/08/08"); 
     addGame("J-LEAGUE", "Urawa", "Shonan", "2016/08/08"); 
     addGame("J-LEAGUE", "Albirex Niigata", "Kobe", "2016/08/08"); 
     addGame("J-LEAGUE", "G-Osaka", "Tosu", "2016/08/08"); 
     addGame("J-LEAGUE", "Hiroshima", "Nagoya", "2016/08/08"); 
     addGame("J-LEAGUE", "Kashiwa", "Yokohama M.", "2016/08/08"); 
     addGame("J-LEAGUE", "Kawasaki", "Kofu", "2016/08/08"); 
     addGame("J-LEAGUE", "Omiya Ardija", "Avispa Fukuoka", "2016/08/08"); 
     addGame("J-LEAGUE", "Tokyo", "Iwata", "2016/08/08"); 

     addGame("J-LEAGUE", "Kofu", "Albirex Niigata", "2016/08/13"); 
     addGame("J-LEAGUE", "Nagoya", "Urawa", "2016/08/13"); 
     addGame("J-LEAGUE", "Shonan", "Hiroshima", "2016/08/13"); 
     addGame("J-LEAGUE", "Iwata", "G-Osaka", "2016/08/13"); 
     addGame("J-LEAGUE", "Kobe ", "Tokyo", "2016/08/13"); 
     addGame("J-LEAGUE", "Tosu", "Kawasaki ", "2016/08/13"); 
     addGame("J-LEAGUE", "Vegalta Sendai", "Kashiwa", "2016/08/13"); 
     addGame("J-LEAGUE", "Yokohama M.", "Omiya Ardija", "2016/08/13"); 
     addGame("J-LEAGUE", "Avispa Fukuoka", "Kashima", "2016/08/14"); 

     addGame("J-LEAGUE", "Kashima", "Shonan", "2016/08/20"); 
     addGame("J-LEAGUE", "Omiya Ardija", "Vegalta Sendai", "2016/08/20"); 
     addGame("J-LEAGUE", "Albirex Niigata", "Avispa Fukuoka", "2016/08/20"); 
     addGame("J-LEAGUE", "G-Osaka", "kobe", "2016/08/20"); 
     addGame("J-LEAGUE", "Hiroshima ", "Kofu", "2016/08/20"); 
     addGame("J-LEAGUE", "Iwata", "Tosu", "2016/08/20"); 
     addGame("J-LEAGUE", "Kashiwa", "Nagoya", "2016/08/20"); 
     addGame("J-LEAGUE", "Tokyo", "Yokohama M.", "2016/08/20"); 
     addGame("J-LEAGUE", "Urawa", "Kawasaki", "2016/08/20"); 

     addGame("SUPERLIGA CHINA", "Beijing Guoan", "Chongqing Lifan", "2016/08/08"); 
     addGame("SUPERLIGA CHINA", "Yanbian", "Shanghai SIPG", "2016/08/08"); 
     addGame("SUPERLIGA CHINA", "Hangzhou Greentown", "Henan Construction", "2016/08/08"); 
     addGame("SUPERLIGA CHINA", "Shanghai Shenhua", "Guangzhou", "2016/08/08"); 
     addGame("SUPERLIGA CHINA", "Shijiazhuang", "Tianjin Teda", "2016/08/08"); 
     addGame("SUPERLIGA CHINA", "Changchun Yatai", "Jiangsu Suning", "2016/08/08"); 
     addGame("SUPERLIGA CHINA", "Guangzhou R&F", "Shandong Luneng", "2016/08/08"); 
     addGame("SUPERLIGA CHINA", "Hebei", "Liaoning", "2016/08/08"); 

     addGame("SUPERLIGA CHINA", "Guangzhou", "Hangzhou Greentown", "2016/08/14"); 
     addGame("SUPERLIGA CHINA", "Shanghai SIPG ", "Shijiazhuang", "2016/08/14"); 
     addGame("SUPERLIGA CHINA", "Shanghai Shenhua", "Liaoning", "2016/08/14"); 
     addGame("SUPERLIGA CHINA", "Tianjin Teda", "Shandong Luneng", "2016/08/14"); 
     addGame("SUPERLIGA CHINA", "Changchun Yatai", "Yanbian", "2016/08/14"); 
     addGame("SUPERLIGA CHINA", "Chongqing Lifan", "Guangzhou R&F", "2016/08/14"); 
     addGame("SUPERLIGA CHINA", "Henan Construction", "Hebei", "2016/08/14"); 
     addGame("SUPERLIGA CHINA", "Jiangsu Suning", "Beijing Guoan", "2016/08/14"); 

     addGame("SUPERLIGA CHINA", "Chongqing Lifan", "Yanbian", "2016/08/21"); 
     addGame("SUPERLIGA CHINA", "Liaoning", "Hangzhou Greentown", "2016/08/21"); 
     addGame("SUPERLIGA CHINA", "Hebei", "Guangzhou", "2016/08/21"); 
     addGame("SUPERLIGA CHINA", "Shandong Luneng", "Changchun Yatai", "2016/08/21"); 
     addGame("SUPERLIGA CHINA", "Shanghai SIPG", "Beijing Guoan", "2016/08/21"); 
     addGame("SUPERLIGA CHINA", "Tianjin Teda", " Henan Construction", "2016/08/21"); 
     addGame("SUPERLIGA CHINA", "Guangzhou R&F", "Shangai Shenhua", "2016/08/21"); 
     addGame("SUPERLIGA CHINA", "Shijiazhuang", "Jiangsu Suning", "2016/08/21"); 

     addGame("DINAMARCA SUPERLIGA", "Odense", "Viborg", "2016/08/08"); 
     addGame("DINAMARCA SUPERLIGA", "Nordsjaelland", "Aalborg", "2016/08/08"); 
     addGame("DINAMARCA SUPERLIGA", "Sonderjyske", "FC Copenhague", "2016/08/08"); 
     addGame("DINAMARCA SUPERLIGA", "Midtjylland", "Brondby", "2016/08/08"); 
     addGame("DINAMARCA SUPERLIGA", "Esbjerg", "Aarhus", "2016/08/08"); 

     addGame("DINAMARCA SUPERLIGA", "Viborg", "Randers", "2016/08/12"); 
     addGame("DINAMARCA SUPERLIGA", "Lyngby", "Aarhus", "2016/08/13"); 
     addGame("DINAMARCA SUPERLIGA", "Horsens", "Silkeborg", "2016/08/13"); 
     addGame("DINAMARCA SUPERLIGA", "FC Copenhague", "Midtjylland", "2016/08/13"); 
     addGame("DINAMARCA SUPERLIGA", "Odense", "Nordsjaelland", "2016/08/14"); 
     addGame("DINAMARCA SUPERLIGA", "Brondby", "Sonderjyske", "2016/08/14"); 
     addGame("DINAMARCA SUPERLIGA", "Aalborg", "Esbjerg", "2016/08/15"); 

     addGame("DINAMARCA SUPERLIGA", "Nordsjaelland", "Randers", "2016/08/19"); 
     addGame("DINAMARCA SUPERLIGA", "Horsens", "Lyngby", "2016/08/19"); 
     addGame("DINAMARCA SUPERLIGA", "FC Copenhague", "Aalborg", "2016/08/20"); 
     addGame("DINAMARCA SUPERLIGA", "Silkeborg", "Viborg", "2016/08/21"); 
     addGame("DINAMARCA SUPERLIGA", "Aarhus", "Brondby", "2016/08/21"); 
     addGame("DINAMARCA SUPERLIGA", "Midtjylland", "Sonderjyske", "2016/08/21"); 
     addGame("DINAMARCA SUPERLIGA", "Esbjerg", "Odense", "2016/08/22"); 

     addGame("EREDIVISIE", "Nijmegen", "Zwolle", "2016/08/08"); 
     addGame("EREDIVISIE", " Den Haag", "G.A. Eagles", "2016/08/08"); 
     addGame("EREDIVISIE", "Twente", "Excelsior", "2016/08/08"); 
     addGame("EREDIVISIE", "Utrecht", "PSV", "2016/08/08"); 
     addGame("EREDIVISIE", "Willem", "Vitesse", "2016/08/08"); 
     addGame("EREDIVISIE", "Groningen", "Feyenoord", "2016/08/08"); 
     addGame("EREDIVISIE", "AZ Alkmaar", "Heerenveen", "2016/08/08"); 
     addGame("EREDIVISIE", "Sparta Rotterdam", "Ajax", "2016/08/08"); 
     addGame("EREDIVISIE", "Roda", "Heracles", "2016/08/08"); 

     addGame("EREDIVISIE", "Heerenveen", "Utrecht", "2016/08/12"); 
     addGame("EREDIVISIE", " Excelsior", "Groningen", "2016/08/13"); 
     addGame("EREDIVISIE", "Ajax", "Roda", "2016/08/13"); 
     addGame("EREDIVISIE", "Vitesse", "Den Haag", "2016/08/13"); 
     addGame("EREDIVISIE", "Zwolle", "Sparta Rotterdam", "2016/08/13"); 
     addGame("EREDIVISIE", "Heracles", "Willem II", "2016/08/14"); 
     addGame("EREDIVISIE", "Feyenoord", "Twente", "2016/08/14"); 
     addGame("EREDIVISIE", "G.A. Eagles", "Nijmegen", "2016/08/14"); 
     addGame("EREDIVISIE", "PSV", "AZ Alkmaar", "2016/08/14"); 

     addGame("EREDIVISIE", "Excelsior", "Den Haag", "2016/08/19"); 
     addGame("EREDIVISIE", " Roda", "Vitesse", "2016/08/20"); 
     addGame("EREDIVISIE", "Ajax", "Willem II", "2016/08/20"); 
     addGame("EREDIVISIE", "Zwolle", "PSV", "2016/08/20"); 
     addGame("EREDIVISIE", "Nijmegen", "Heerenveen", "2016/08/20"); 
     addGame("EREDIVISIE", "Groningen", "Twente", "2016/08/21"); 
     addGame("EREDIVISIE", "Sparta Rotterdam", "G.A. Eagles", "2016/08/21"); 
     addGame("EREDIVISIE", "Utrecht", "AZ Alkmaar", "2016/08/21"); 
     addGame("EREDIVISIE", "Heracles", "Feyenoord", "2016/08/21"); 
    } 


    private void addGame(final String pLeague, final String pTeam1, final String pTeam2, final String pDate) throws ParseException { 
     final Date date = Temp.formatter.parse(pDate); 
     allLeagues.add(new Game(pLeague, pTeam1, pTeam2, date)); 
    } 

} 

Answer 2

Zusätzlich zu den Kommentaren von @janos, die mit Ihrem vorhandenen Code gearbeitet haben, sind Sie an die Art gebunden, wie Sie die Daten darstellen? Dinge wie das Erstellen einer DateFormatter und das Erstellen unnötiger Listen zu beheben, wird den Code beschleunigen. Das erste, was mir in den Sinn kommt, ist, dass die Datenstruktur nicht ideal ist. Sie speichern eine Reihe von Zeichenfolgen und führen dann Konvertierungen von Zeichenfolgen in Daten aus, um Vergleiche durchzuführen. Warum speichern Sie sie nicht einfach als Daten? Wenn Sie das tun, müssen Sie einige Klassen für die verschiedenen Werte erstellen. Auch, wieder nicht sicher, ob Sie die ältere java.util.Date für einen bestimmten Grund verwenden (vielleicht verbunden mit einer älteren Version von Java), aber wenn Sie Java 8 verwenden können (und wenn nicht, versuchen Sie es zu können. .. Java 7 und vorherige werden nicht mehr unterstützt), dann empfehle ich sehr, die neueren Datum und Uhrzeit Objekte im Paket java.time zu verwenden. Die ältere java.util.Date hat eine Menge veralteter Methoden, ist gefährlich, schwer zu benutzen und viele Dinge sind super langsam. Die neueren Daten sind viel, viel schöner, basierend auf Joda Zeit und viel sicherer.

Ein einfaches Beispiel (obwohl nicht super optimiert, weil ich nicht weiß, was Ihr Programm sonst noch tun muss). Bitte beachten Sie, dass ich die Klassen noch nicht vollständig ausgefüllt habe, da ich nicht genau wusste, was Sie genau benötigten, aber wenn Sie so etwas befolgen würden, würde ich Ihnen empfehlen, die Dinge zu implementieren, die Sinn ergeben (zB equals, hashCode usw.) für die Klassen. Auch sollten die Felder wahrscheinlich private machen und Getter-Methoden hinzufügen.

class Fixtures { 
    final List<League> allLeagues = new ArrayList<>(); 

    Fixtures() { 
     List<Game> games = new ArrayList<>(); 
     games.add(new Game(new Team("Flamengo"), new Team("Atletico-PR"), LocalDate.of(2016, 8, 6))); 
     games.add(new Game(new Team("America-MG"), new Team("Santos"), LocalDate.of(2016, 8, 7))); 
     allLeagues.add(new League("BRASILEIRAO SERIE A", games)); 
     // ... etc 
    } 
} 

class League { 
    final String name; 
    final List<Game> games; 

    public League(String name, List<Game> games) { 
     this.name = name; 
     this.games = new ArrayList<>(games); 
    } 
} 

class Team { 
    final String name; 

    Team(String name) { 
     this.name = name; 
    } 
} 

class Game { 
    final Team team1; 
    final Team team2; 
    final LocalDate date; 

    Game(Team team1, Team team2, LocalDate date) { 
     this.team1 = team1; 
     this.team2 = team2; 
     this.date = date; 
    } 
}