将arrayList数据加载到JTable中

Question

我正在尝试从一个被调用的方法中设置项目,FootballClub到目前为止它很好.但后来我从它创建了一个arrayList,我不知道怎么找不到将这些信息存储到JTable中的方法.问题是我找不到设置固定行数的方法

这是我的代码:

类StartLeague:

import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;

public class startLeague implements LeagueManager{

//setting the frame and other components to appear

public startLeague(){
    JButton createTeam = new JButton("Create Team");
    JButton deleteTeam = new JButton("Delete Team");

    JFrame frame = new JFrame("Premier League System");
    JPanel panel = new JPanel();
    frame.setSize(1280, 800);
    frame.setVisible(true);
    frame.add(panel);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    String col[] = {"Pos","Team","P", "W", "L", "D", "MP", "GF", "GA", "GD"};

    panel.setLayout(new GridLayout(20, 20));
    panel.add(createTeam);
    panel.add(deleteTeam);
    panel.add(new JLabel(""));
    //JLabels to fill the space
    }
    }

足球俱乐部课程:

import java.util.ArrayList;



 public class FootballClub extends SportsClub{





   FootballClub(int position, String name, int points, int wins, int defeats, int draws, int totalMatches, int goalF, int goalA, int goalD){
   this.position = position;
   this.name = name;
   this.points = points;
   this.wins = wins;
   this.defeats = defeats;
   this.draws = draws;
   this.totalMatches = totalMatches;
   this.goalF = goalF;
   this.goalA = goalA;
   this.goalD = goalD;

   }

SportsClub类(摘要):

abstract class SportsClub {
int position;
String name;
int points;
int wins;
int defeats;
int draws;
int totalMatches;
int goalF;
int goalA;
int goalD;

}

最后,LeagueManager,这是一个接口:

import java.util.ArrayList;


public interface LeagueManager {
ArrayList<FootballClub> originalLeagueTable = new ArrayList<FootballClub>();
FootballClub arsenal = new FootballClub(1, "Arsenal", 35, 11, 2, 2, 15, 30, 11, 19);
FootballClub liverpool = new FootballClub(2, "Liverpool", 30, 9, 3, 3, 15, 34, 18, 16);
FootballClub chelsea = new FootballClub(3, "Chelsea", 30, 9, 2, 2, 15, 30, 11, 19);
FootballClub mCity = new FootballClub(4, "Man City", 29, 9, 2, 4, 15, 41, 15, 26);
FootballClub everton = new FootballClub(5, "Everton", 28, 7, 1, 7, 15, 23, 14, 9);
FootballClub tot = new FootballClub(6, "Tottenham", 27, 8, 4, 3, 15, 15, 16, -1);
FootballClub newcastle = new FootballClub(7, "Newcastle", 26, 8, 5, 2, 15, 20, 21, -1);
FootballClub south = new FootballClub(8, "Southampton", 23, 6, 4, 5, 15, 19, 14, 5);

}

有人能帮帮我吗？我已经尝试了几天.谢谢.

Answer 1

"问题是我找不到设置固定行数的方法"

您不需要设置行数.用一个TableModel.一个DefaultTableModel特别.

String col[] = {"Pos","Team","P", "W", "L", "D", "MP", "GF", "GA", "GD"};

DefaultTableModel tableModel = new DefaultTableModel(col, 0);
                                            // The 0 argument is number rows.

JTable table = new JTable(tableModel);

然后你就可以行到添加tableModel有Object[]

Object[] objs = {1, "Arsenal", 35, 11, 2, 2, 15, 30, 11, 19};

tableModel.addRow(objs);

您可以循环添加Object []数组.

注意:JTable当前不允许将输入数据实例化为ArrayList.它必须是一个Vector或一个数组.

请参见JTable和DefaultTableModel.另外,如何使用JTable教程

"我从中创建了一个arrayList,但我无法找到将这些信息存储到JTable中的方法."

你可以做这样的事情来添加数据

ArrayList<FootballClub> originalLeagueList = new ArrayList<FootballClub>();

originalLeagueList.add(new FootballClub(1, "Arsenal", 35, 11, 2, 2, 15, 30, 11, 19));
originalLeagueList.add(new FootballClub(2, "Liverpool", 30, 9, 3, 3, 15, 34, 18, 16));
originalLeagueList.add(new FootballClub(3, "Chelsea", 30, 9, 2, 2, 15, 30, 11, 19));
originalLeagueList.add(new FootballClub(4, "Man City", 29, 9, 2, 4, 15, 41, 15, 26));
originalLeagueList.add(new FootballClub(5, "Everton", 28, 7, 1, 7, 15, 23, 14, 9));
originalLeagueList.add(new FootballClub(6, "Tottenham", 27, 8, 4, 3, 15, 15, 16, -1));
originalLeagueList.add(new FootballClub(7, "Newcastle", 26, 8, 5, 2, 15, 20, 21, -1));
originalLeagueList.add(new FootballClub(8, "Southampton", 23, 6, 4, 5, 15, 19, 14, 5));

for (int i = 0; i < originalLeagueList.size(); i++){
   int position = originalLeagueList.get(i).getPosition();
   String name = originalLeagueList.get(i).getName();
   int points = originalLeagueList.get(i).getPoinst();
   int wins = originalLeagueList.get(i).getWins();
   int defeats = originalLeagueList.get(i).getDefeats();
   int draws = originalLeagueList.get(i).getDraws();
   int totalMatches = originalLeagueList.get(i).getTotalMathces();
   int goalF = originalLeagueList.get(i).getGoalF();
   int goalA = originalLeagueList.get(i).getGoalA();
   in ttgoalD = originalLeagueList.get(i).getTtgoalD();

   Object[] data = {position, name, points, wins, defeats, draws, 
                               totalMatches, goalF, goalA, ttgoalD};

   tableModel.add(data);

}

Answer 2

您可能需要使用TableModel(Oracle的教程)

如何实现自己的 TableModel

public class FootballClubTableModel extends AbstractTableModel {
  private List<FootballClub> clubs ;
  private String[] columns ; 

  public FootBallClubTableModel(List<FootballClub> aClubList){
    super();
    clubs = aClubList ;
    columns = new String[]{"Pos","Team","P", "W", "L", "D", "MP", "GF", "GA", "GD"};
  }

  // Number of column of your table
  public int getColumnCount() {
    return columns.length ;
  }

  // Number of row of your table
  public int getRowsCount() {
    return clubs.size();
  }

  // The object to render in a cell
  public Object getValueAt(int row, int col) {
    FootballClub club = clubs.get(row);
    switch(col) {
      case 0: return club.getPosition();
      // to complete here...
      default: return null;
    }
  }

  // Optional, the name of your column
  public String getColumnName(int col) {
    return columns[col] ;
  }

}

您可能需要覆盖其他方法TableModel,取决于您想要做什么,但这里是理解和实现的基本方法:)
像这样使用它

List<FootballClub> clubs = getFootballClub();
TableModel model = new FootballClubTableModel(clubs);
JTable table = new JTable(model);

希望它有所帮助!