行索引在JTable中始终显示为-1 [英] row index appears -1 always in JTable

问题描述

我已经编写了这部分代码来获取用户两次单击的行的索引，但是每行总是返回-1.请解决问题.

I have written this part of code for getting the index of row which is clicked two times by the user, but this returns -1 always for every row. Please solve the problem.

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;


public class A extends MouseAdapter {

    JFrame frame = new JFrame();
    Object data[][] = {{"1","Jahanzeb"},{"2","Ahmed"},{"3","Shaikh"}};
    String col[] = {"#","Names"};
    JTable table = new JTable(data,col);
    JScrollPane scroll = new JScrollPane(table);


    public static void main(String arg[]) {
        new A();
    }

    public A() {

        table.addMouseListener(this);
        table.setEnabled(false); // because table should not be editable
        frame.setSize(500,500);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(scroll);
        frame.add(table);
        frame.setVisible(true);
    }


    public void mouseClicked(MouseEvent e) {
        if(e.getClickCount()==2)
            System.out.println(table.getSelectedRow());
    }

}

推荐答案

未启用表时，无法选择任何行.

When your table is not enabled, you cannot select any row.

认为您需要实现自己的表模型，并将editable设置为false.

Think you'll need to implement your own table model and set editable to false.

DefaultTableModel tableModel = new DefaultTableModel(data, col)

    @Override
    public boolean isCellEditable(int row, int column) {
       return false;
    }
};

table.setModel(tableModel);

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