?? ??? JTable ???

??? ???? ??? ??? ??? ???? ???? JTable? ??? ? ?? ?? ?? ?????? ???? ?? ??? ??? ? ????. ???.

??? ?? ??

???? ??? ?????. ??? ?? ??? ??? CollectionDataModel? ?? ?????. populate() ??? ???? ??? ?? ???? ?? ???? ??? ???? ???? ??? ??? ????. ??? ArrayList ?. ??? ??? ??? ?? ??? ??? ??? ??? ???? ???? ?? ??? ??? ??? ?? ?? ??? ?????.

JTable ???? ?? ?? ??

JTable? ???? ???? ?? ?? ??? ???? ???. ????:

• getValueAt(rowIndex, columnIndex)? ??? ?? ?? ??? ?? ???? ???. cell.
• getColumnCount() ? getRowCount()? ???? ??? ???? ???? ???.
• ??? ??? populate() ???? ?? ??? ????? ???? ???.

JTable ?? ??

??? ?? ?? JTable ??? ???? JTable ??? ??? ??? ? ????. ?????????. JTable? ??? ??? ???? ???? ???? ?? ??? ???? ??? ? ????.

?? ??

??? ????? CollectionDataModel ??? ?? ?? ???? ??? ????? ?????. ?? JTable ??? ???? ?? ?? ??? ?? ??? ??? ???? ???? ???? ??? ??????.

??? JTable ???? ?

??? JTable ???? ???? ?? ?? ??????. :

import java.awt.EventQueue;
import java.awt.GridLayout;
import java.util.Map;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;

public class EnvTableTest extends JPanel {

    public EnvTableTest() {
        this.setLayout(new GridLayout());
        this.add(new JScrollPane(new JTable(new EnvDataModel())));
    }

    private static class EnvDataModel extends AbstractTableModel {

        private Map<String, String> data = System.getenv();
        private String[] keys;

        public EnvDataModel() {
            keys = data.keySet().toArray(new String[data.size()]);
        }

        @Override
        public String getColumnName(int col) {
            if (col == 0) {
                return "Key";
            } else {
                return "Value";
            }
        }

        @Override
        public int getColumnCount() {
            return 2;
        }

        @Override
        public int getRowCount() {
            return data.size();
        }

        @Override
        public Object getValueAt(int row, int col) {
            if (col == 0) {
                return keys[row];
            } else {
                return data.get(keys[row]);
            }
        }
    }

    private void display() {
        JFrame f = new JFrame("EnvTableTest");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(this);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                new EnvTableTest().display();
            }
        });
    }
}

? ??? EnvDataModel ??? ?? ??? ??? ?? ???? ???? ???? ???? ?? ?????. JTable? ???? ???? ???? ?????.

? ??? ? ??? ??? ???? ????? ???? ? JTable? ?? ?? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!