仅具有特定列的可选JTable和/或仅从一列获取数据

import javax.swing.*;
import javax.swing.table.AbstractTableModel;

public class CustomTableModel extends AbstractTableModel {
    private Object[][] data;
    private String[] columnNames;

    public CustomTableModel(Object[][] data, String[] columnNames) {
        this.data = data;
        this.columnNames = columnNames;
    }

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

    @Override
    public int getColumnCount() {
        return columnNames.length;
    }

    @Override
    public Object getValueAt(int row, int column) {
        return data[row][column];
    }

    @Override
    public String getColumnName(int column) {
        return columnNames[column];
    }

    @Override
    public boolean isCellEditable(int row, int column) {
        return false; // 设置单元格不可编辑
    }
}

public class Main {
    public static void main(String[] args) {
        Object[][] data = {
                {"John", "Doe", 30},
                {"Jane", "Smith", 25},
                {"Bob", "Johnson", 35}
        };

        String[] columnNames = {"First Name", "Last Name", "Age"};

        CustomTableModel model = new CustomTableModel(data, columnNames);
        JTable table = new JTable(model);

        // 设置只显示特定列
        table.getColumnModel().removeColumn(table.getColumnModel().getColumn(2));

        JScrollPane scrollPane = new JScrollPane(table);
        JFrame frame = new JFrame();
        frame.add(scrollPane);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }
}

int column = 0; // 第一列的索引为0
int rowCount = table.getRowCount();
for (int row = 0; row < rowCount; row++) {
    Object value = table.getValueAt(row, column);
    // 处理获取到的数据
}