显示ArrayList表

Question

我有一个main.java有一个按钮，当你按下它时，它会调用一个方法并返回一个节点的ArrayList; 我想在表中显示ArrayList（类节点中描述的5个字段） 怎么做，问题是显示一些字段，因为它们是列表类型？

Node.java

public class Node {
    private String name;
    private double value;
    private List<Node> first;
    private List<Node> second;
    private List<Double> values;

        //some methods... 
}

main.java

import java.awt.Button;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
public class Main {
    public static void main(String[] args) {
             JFrame frame = new JFrame("Red Bayesiana Visita a Asia ");
             JPanel panel = new JPanel();
             boton = new Button( "Get");
             panel.add(boton);
             frame.add(panel);

             ArrayList<Node>  arrayList;

             boton.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                         arrayList = method("file.txt");
                         //insert into table arrayList of 5 fields? 
                    }
            });

         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setSize(400, 400);
         frame.setVisible(true);
    }
}

Answer 1

正如Creating a Table Model中所述，让Nodes扩展AbstractTableModel并实施所需的方法。使用生成的模型创建JTable。

附录：这是模型的概述。字段name和value可以使用默认renderer，但您已决定如何render List找到每个Node import java.util.ArrayList; import java.util.List; import javax.swing.table.AbstractTableModel; /** @see http://stackoverflow.com/questions/5438516 */ public class Nodes extends AbstractTableModel { private List<Node> nodes = new ArrayList<Node>(); @Override public int getRowCount() { return nodes.size(); } @Override public int getColumnCount() { return 5; // A Node has five members } @Override public Object getValueAt(int row, int col) { Node node = nodes.get(row); switch (col) { case 0: return node.name; case 1: return node.value; case 2: return node.first; case 3: return node.second; case 4: return node.values; default: return null; } } @Override public Class getColumnClass(int c) { return getValueAt(0, c).getClass(); } private class Node { private String name; private double value; private List<Node> first; private List<Node> second; private List<Double> values; } } }。

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