Java t（）； 私有结果集rs=null； 私有结果元数据元数据； 公共JDBCModel（连接连接、字符串查询）{ 试一试{ 语句s=conn.createStatement（）； rs=s.executeQuery（查询）； meta=rs.getMetaD

t（）； 私有结果集rs=null； 私有结果元数据元数据； 公共JDBCModel（连接连接、字符串查询）{ 试一试{ 语句s=conn.createStatement（）； rs=s.executeQuery（查询）； meta=rs.getMetaData（）； JDBCWorker=新的JDBCWorker（）； jpb.setUndeterminate（真）； worker.execute（）； }捕获（SQLE异常）{ e、 printStackTrace（System.err）； } } @凌驾 public int getRowCount（）{ 返回data.size（）； } @凌驾 public int getColumnCount（）{ 返回10； } @凌驾 公共对象getValueAt（int行索引，int colIndex）{ 行=data.get（行索引）； 开关（colIndex）{ 案例0： 返回row.lname； 案例1： 返回row.fname； 案例2： 返回row.monTime； 案例3： 返回row.tueTime； 案例4： 返回row.wedTime； 案例5： 返回行时间； 案例6： 返回row.friTime； 案例7： 返回row.satTime； 案例8： 返回row.sunTime； 案例9： 返回row.totalTime； } 返回null； } @凌驾 公共字符串getColumnName（int-colIndex）{ 字符串名称=null； 开关（colIndex）{ 案例0:name=“Last name”； 返回名称； 案例1:name=“First name”； 返回名称； 案例2:name=“星期一”； 返回名称； 案例3:name=“星期二”； 返回名称； 案例4:name=“星期三”； 返回名称； 案例5:name=“星期四”； 返回名称； 案例6:name=“星期五”； 返回名称； 案例7:name=“星期六”； 返回名称； 案例8:name=“Sunday”； 返回名称； 案例9:name=“Total”； 返回名称； } 返回名称； } 私有类JDBCWorker扩展SwingWorker{ @凌驾 受保护列表doInBackground（）{ 试一试{ while（rs.next（））{ 行r=新行（）； 整数合计=0； r、 lname=rs.getString（2）； r、 fname=rs.getString（1）； r、 monTime=String.valueOf（rs.getInt（3）+“-”+rs.getInt（4））； 总数+=卢比。格特（4）-卢比。格特（3）； r、 tueTime=String.valueOf（rs.getInt（5）+“-”+rs.getInt（6））； 总计+=rs.getInt（6）-rs.getInt（5）； r、 wedTime=String.valueOf（rs.getInt（7）+“-”+rs.getInt（8））； 总计+=rs.getInt（8）-rs.getInt（7）； r、 thuTime=String.valueOf（rs.getInt（9）+“-”+rs.getInt（10））； 总计+=卢比整（10）-卢比整（9）； r、 friTime=String.valueOf（rs.getInt（11）+“-”+rs.getInt（12））； 总计+=rs.getInt（12）-rs.getInt（11）； r、 satTime=String.valueOf（rs.getInt（13）+“-”+rs.getInt（14））； 总计+=rs.getInt（14）-rs.getInt（13）； r、 sunTime=String.valueOf（rs.getInt（15）+“-”+rs.getInt（16））； 总计+=rs.getInt（16）-rs.getInt（15）； r、 totalTime=String.valueOf（总计）； 出版（r）； } }捕获（SQLE异常）{ e、 printStackTrace（System.err）； } 返回数据； } @凌驾 受保护的无效进程（列表块）{ int n=getRowCount（）+1； System.out.println（“行计数=”+n）； System.out.println（“Chunks Size=“+Chunks.Size（））； for（行：块）{ 添加数据（行）； } fireTableRowsInserted（n，n+chunks.size（））； } @凌驾 受保护的void done（）{ jpb.setUndeterminate（假）； jpb.setValue（100）； } } } //使用测试名称和工作时间创建测试数据库 私有静态void createTestDatabase（int n）{ 连接conn=getConnection（）； 试一试{ 语句st=conn.createStatement（）； st.execute（“创建表城市（fname varchar（10）、lname varchar（10）、mons int（2）、mone int（2）、tues int（2）、tuee int（2）、weds int（2）、wede int（2）、thue int（2）、fris int（2）、frie int（2）、sats int（2）、sate int（2）、sune int（2））； Random gen=新的Random（）； PreparedStatement ps=conn.prepareStatement( “插入城市值（？，，，，，，，，，，，，，，，，，，，，，，，，，，）”； 对于（int i=0；iException in thread "AWT-EventQueue-0" java.lang.IndexOutOfBoundsException: Invalid range at javax.swing.DefaultRowSorter.checkAgainstModel(Unknown Source) at javax.swing.DefaultRowSorter.rowsInserted(Unknown Source) at javax.swing.JTable.notifySorter(Unknown Source) at javax.swing.JTable.sortedTableChanged(Unknown Source) at javax.swing.JTable.tableChanged(Unknown Source) at javax.swing.table.AbstractTableModel.fireTableChanged(Unknown Source) at javax.swing.table.AbstractTableModel.fireTableRowsInserted(Unknown Source) at tesPackage.WorkerTest$JDBCModel$JDBCWorker.process(WorkerTest.java:276)

package tesPackage;

import java.awt.BorderLayout;
import java.util.concurrent.ThreadLocalRandom;
import java.awt.EventQueue;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.RowFilter;
import javax.swing.ScrollPaneConstants;
import javax.swing.SwingWorker;
import javax.swing.border.EmptyBorder;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;

/**
* @see https://stackoverflow.com/a/34742409/230513
* @see https://stackoverflow.com/a/24762078/230513
*/
public class WorkerTest {

private static final int N = 25;
private static final String URL = "jdbc:h2:mem:test";
private static final Random r = new Random();

private JPanel contentPane;
private static JTable tblSchedule;
private JScrollPane scrollSchedTable;
private JDBCModel model;
private JPanel panel;
private JTextField textField;

private static TableRowSorter<TableModel> rowSorter;

private void display() {

    createTestDatabase(N);  //Create the Test Database

    //Create the GUI
    JFrame f = new JFrame("WorkerTest");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setBounds(100, 100, 780, 450);
    contentPane = new JPanel();
    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
    f.setContentPane(contentPane);
    contentPane.setLayout(new BorderLayout(0, 0));
    {
        scrollSchedTable = new JScrollPane();
        scrollSchedTable.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
        contentPane.add(scrollSchedTable);
        {
            tblSchedule = new JTable();
            tblSchedule.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
            tblSchedule.setShowHorizontalLines(true);
            tblSchedule.setShowVerticalLines(true);
            tblSchedule.setFillsViewportHeight(true);
            model = new JDBCModel(getConnection(), "select * from city");
            tblSchedule.setModel(model);
            rowSorter = new TableRowSorter<TableModel>(model);  //IF UNCOMMENT THESE 2 LINES GUI WILL RUN
            tblSchedule.setRowSorter(rowSorter);                //BUT IF TYPE IN SEARCH BOX THERE IS AN ERROR
            scrollSchedTable.setViewportView(tblSchedule);
        }
        {
            panel = new JPanel();
            contentPane.add(panel, BorderLayout.NORTH);
            panel.setLayout(new BorderLayout(0, 0));
            {
                textField = new JTextField();
                panel.add(textField, BorderLayout.EAST);
                textField.setColumns(10);
            }
            {
                panel.add(model.jpb, BorderLayout.CENTER);
            }
            {
                textField.getDocument().addDocumentListener(new DocumentListener(){

                    @Override
                    public void insertUpdate(DocumentEvent e) {
                        String text = textField.getText().trim();
                        if (text.trim().length() == 0) {
                            rowSorter.setRowFilter(null);
                        } else {
                            rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
                        }
                    }

                    @Override
                    public void removeUpdate(DocumentEvent e) {
                        String text = textField.getText();
                        if (text.trim().length() == 0) {
                            rowSorter.setRowFilter(null);
                        } else {
                            rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
                        }
                    }

                    @Override
                    public void changedUpdate(DocumentEvent e) {
                        String text = textField.getText();
                        if (text.trim().length() == 0) {
                            rowSorter.setRowFilter(null);
                        } else {
                            rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
                        }
                    }

                });
            }
        }
    }
    f.setVisible(true);
}

private static class Row {
    String lname;
    String fname;
    String monTime;
    String tueTime;
    String wedTime;
    String thuTime;
    String friTime;
    String satTime;
    String sunTime;
    String totalTime;
}

private static class JDBCModel extends AbstractTableModel {

    private final JProgressBar jpb = new JProgressBar();
    private static final long serialVersionUID = 1L;
    private final List<Row> data = new ArrayList<>();
    private ResultSet rs = null;
    private ResultSetMetaData meta;

    public JDBCModel(Connection conn, String query) {
        try {
            Statement s = conn.createStatement();
            rs = s.executeQuery(query);
            meta = rs.getMetaData();
            JDBCWorker worker = new JDBCWorker();
            jpb.setIndeterminate(true);
            worker.execute();

        } catch (SQLException e) {
            e.printStackTrace(System.err);
        }
    }

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

    @Override
    public int getColumnCount() {
        return 10;
    }



    @Override
    public Object getValueAt(int rowIndex, int colIndex) {
        Row row = data.get(rowIndex);
        switch (colIndex) {
            case 0:
                return row.lname;
            case 1:
                return row.fname;
            case 2:
                return row.monTime;
            case 3:
                return row.tueTime;
            case 4:
                return row.wedTime;
            case 5:
                return row.thuTime;
            case 6:
                return row.friTime;
            case 7:
                return row.satTime;
            case 8:
                return row.sunTime;
            case 9:
                return row.totalTime;
        }
        return null;
    }

    @Override
    public String getColumnName(int colIndex) {
        String name = null;
        switch(colIndex){
        case 0: name = "Last Name";
            return name;
        case 1: name = "First Name";
            return name;
        case 2: name = "Monday";
            return name;
        case 3: name = "Tuesday";
            return name;
        case 4: name = "Wednesday";
            return name;
        case 5: name = "Thursday";
            return name;
        case 6: name = "Friday";
            return name;
        case 7: name = "Saturday";
            return name;
        case 8: name = "Sunday";
            return name;
        case 9: name = "Total";
            return name;
        }
        return name;
    }

    private class JDBCWorker extends SwingWorker<List<Row>, Row> {

        @Override
        protected List<Row> doInBackground() {
            try {
                while (rs.next()) {
                    Row r = new Row();
                    Integer total = 0;
                    r.lname = rs.getString(2);
                    r.fname = rs.getString(1);
                    r.monTime = String.valueOf(rs.getInt(3) + " - " + rs.getInt(4));
                    total += rs.getInt(4) - rs.getInt(3);
                    r.tueTime = String.valueOf(rs.getInt(5) + " - " + rs.getInt(6));
                    total += rs.getInt(6) - rs.getInt(5);
                    r.wedTime = String.valueOf(rs.getInt(7) + " - " + rs.getInt(8));
                    total += rs.getInt(8) - rs.getInt(7);
                    r.thuTime = String.valueOf(rs.getInt(9) + " - " + rs.getInt(10));
                    total += rs.getInt(10) - rs.getInt(9);
                    r.friTime = String.valueOf(rs.getInt(11) + " - " + rs.getInt(12));
                    total += rs.getInt(12) - rs.getInt(11);
                    r.satTime = String.valueOf(rs.getInt(13) + " - " + rs.getInt(14));
                    total += rs.getInt(14) - rs.getInt(13);
                    r.sunTime = String.valueOf(rs.getInt(15) + " - " + rs.getInt(16));
                    total += rs.getInt(16) - rs.getInt(15);
                    r.totalTime = String.valueOf(total);
                    publish(r);
                }
            } catch (SQLException e) {
                e.printStackTrace(System.err);
            }
            return data;
        }

        @Override
        protected void process(List<Row> chunks) {
            int n = getRowCount() + 1;
            System.out.println("Row Count = " + n);
            System.out.println("Chunks Size = " + chunks.size());
            for (Row row : chunks) {
                data.add(row);
            }
            fireTableRowsInserted(n, n + chunks.size());
        }

        @Override
        protected void done(){
            jpb.setIndeterminate(false);
            jpb.setValue(100);
        }
    }
}

//Creates the Test DB with test names and working hours
private static void createTestDatabase(int n) {
    Connection conn = getConnection();
    try {
        Statement st = conn.createStatement();
        st.execute("create table city(fname varchar(10), lname varchar(10), mons int(2), mone int(2), tues int(2), tuee int(2), weds int(2), wede int(2), thus int(2), thue int(2), fris int(2), frie int(2), sats int(2), sate int(2), suns int(2), sune int(2))");
        Random gen = new Random();
        PreparedStatement ps = conn.prepareStatement(
            "insert into city values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
        for (int i = 0; i < n; i++) {
            ps.setString(1, "First" + i);
            ps.setString(2, "Last" + i);
            ps.setInt(3, ThreadLocalRandom.current().nextInt(6, 12));
            ps.setInt(4, ThreadLocalRandom.current().nextInt(13, 22));
            ps.setInt(5, ThreadLocalRandom.current().nextInt(6, 12));
            ps.setInt(6, ThreadLocalRandom.current().nextInt(13, 22));
            ps.setInt(7, ThreadLocalRandom.current().nextInt(6, 12));
            ps.setInt(8, ThreadLocalRandom.current().nextInt(13, 22));
            ps.setInt(9, ThreadLocalRandom.current().nextInt(6, 12));
            ps.setInt(10, ThreadLocalRandom.current().nextInt(13, 22));
            ps.setInt(11, ThreadLocalRandom.current().nextInt(6, 12));
            ps.setInt(12, ThreadLocalRandom.current().nextInt(13, 22));
            ps.setInt(13, ThreadLocalRandom.current().nextInt(6, 12));
            ps.setInt(14, ThreadLocalRandom.current().nextInt(13, 22));
            ps.setInt(15, ThreadLocalRandom.current().nextInt(6, 12));
            ps.setInt(16, ThreadLocalRandom.current().nextInt(13, 22));
            ps.execute();
        }
    } catch (SQLException ex) {
        ex.printStackTrace(System.err);
    }
}

private static Connection getConnection() {
    try {
        return DriverManager.getConnection(URL, "", "");
    } catch (SQLException e) {
        e.printStackTrace(System.err);
    }
    return null;
}

public static void main(String[] args) {
    EventQueue.invokeLater(new WorkerTest()::display);
}
}

fireTableRowsInserted(n, n + chunks.size());

fireTableDataChanged();

import java.awt.BorderLayout;
import java.util.concurrent.ThreadLocalRandom;
import java.awt.EventQueue;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.RowFilter;
import javax.swing.ScrollPaneConstants;
import javax.swing.SwingWorker;
import javax.swing.border.EmptyBorder;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;

/**
 * @see https://stackoverflow.com/q/43161033/230513
 * @see https://stackoverflow.com/a/34742409/230513
 * @see https://stackoverflow.com/a/24762078/230513
 */
public class WorkerTest {

    private static final int N = 256;
    private static final String URL = "jdbc:h2:mem:test";
    private static final Random r = new Random();

    private JPanel contentPane;
    private static JTable tblSchedule;
    private JScrollPane scrollSchedTable;
    private JDBCModel model;
    private JPanel panel;
    private JTextField textField;

    private static TableRowSorter<TableModel> rowSorter;

    private void display() {

        createTestDatabase(N);  //Create the Test Database

        //Create the GUI
        JFrame f = new JFrame("WorkerTest");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setBounds(100, 100, 780, 450);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        f.setContentPane(contentPane);
        contentPane.setLayout(new BorderLayout(0, 0));

        scrollSchedTable = new JScrollPane();
        scrollSchedTable.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
        contentPane.add(scrollSchedTable);

        tblSchedule = new JTable();
        tblSchedule.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        tblSchedule.setShowHorizontalLines(true);
        tblSchedule.setShowVerticalLines(true);
        tblSchedule.setFillsViewportHeight(true);
        model = new JDBCModel(getConnection(), "select * from city");
        tblSchedule.setModel(model);
        rowSorter = new TableRowSorter<TableModel>(model);
        tblSchedule.setRowSorter(rowSorter);
        scrollSchedTable.setViewportView(tblSchedule);

        panel = new JPanel();
        contentPane.add(panel, BorderLayout.NORTH);
        panel.setLayout(new BorderLayout(0, 0));

        textField = new JTextField();
        panel.add(textField, BorderLayout.EAST);
        textField.setColumns(10);

        panel.add(model.jpb, BorderLayout.CENTER);

        textField.getDocument().addDocumentListener(new DocumentListener() {

            @Override
            public void insertUpdate(DocumentEvent e) {
                String text = textField.getText().trim();
                if (text.trim().length() == 0) {
                    rowSorter.setRowFilter(null);
                } else {
                    rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
                }
            }

            @Override
            public void removeUpdate(DocumentEvent e) {
                String text = textField.getText();
                if (text.trim().length() == 0) {
                    rowSorter.setRowFilter(null);
                } else {
                    rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
                }
            }

            @Override
            public void changedUpdate(DocumentEvent e) {
                String text = textField.getText();
                if (text.trim().length() == 0) {
                    rowSorter.setRowFilter(null);
                } else {
                    rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
                }
            }

        });
        f.setVisible(true);
    }

    private static class Row {

        String lname;
        String fname;
        String monTime;
        String tueTime;
        String wedTime;
        String thuTime;
        String friTime;
        String satTime;
        String sunTime;
        String totalTime;
    }

    private static class JDBCModel extends AbstractTableModel {

        private final JProgressBar jpb = new JProgressBar();
        private static final long serialVersionUID = 1L;
        private final List<Row> data = new ArrayList<>();
        private ResultSet rs = null;
        private ResultSetMetaData meta;

        public JDBCModel(Connection conn, String query) {
            try {
                Statement s = conn.createStatement();
                rs = s.executeQuery(query);
                meta = rs.getMetaData();
                JDBCWorker worker = new JDBCWorker();
                jpb.setIndeterminate(true);
                worker.execute();

            } catch (SQLException e) {
                e.printStackTrace(System.err);
            }
        }

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

        @Override
        public int getColumnCount() {
            return 10;
        }

        @Override
        public Object getValueAt(int rowIndex, int colIndex) {
            Row row = data.get(rowIndex);
            switch (colIndex) {
                case 0:
                    return row.lname;
                case 1:
                    return row.fname;
                case 2:
                    return row.monTime;
                case 3:
                    return row.tueTime;
                case 4:
                    return row.wedTime;
                case 5:
                    return row.thuTime;
                case 6:
                    return row.friTime;
                case 7:
                    return row.satTime;
                case 8:
                    return row.sunTime;
                case 9:
                    return row.totalTime;
            }
            return null;
        }

        @Override
        public String getColumnName(int colIndex) {
            String name = null;
            switch (colIndex) {
                case 0:
                    name = "Last Name";
                    return name;
                case 1:
                    name = "First Name";
                    return name;
                case 2:
                    name = "Monday";
                    return name;
                case 3:
                    name = "Tuesday";
                    return name;
                case 4:
                    name = "Wednesday";
                    return name;
                case 5:
                    name = "Thursday";
                    return name;
                case 6:
                    name = "Friday";
                    return name;
                case 7:
                    name = "Saturday";
                    return name;
                case 8:
                    name = "Sunday";
                    return name;
                case 9:
                    name = "Total";
                    return name;
            }
            return name;
        }

        private class JDBCWorker extends SwingWorker<List<Row>, Row> {

            @Override
            protected List<Row> doInBackground() {
                try {
                    while (rs.next()) {
                        Row r = new Row();
                        Integer total = 0;
                        r.lname = rs.getString(2);
                        r.fname = rs.getString(1);
                        r.monTime = String.valueOf(rs.getInt(3) + " - " + rs.getInt(4));
                        total += rs.getInt(4) - rs.getInt(3);
                        r.tueTime = String.valueOf(rs.getInt(5) + " - " + rs.getInt(6));
                        total += rs.getInt(6) - rs.getInt(5);
                        r.wedTime = String.valueOf(rs.getInt(7) + " - " + rs.getInt(8));
                        total += rs.getInt(8) - rs.getInt(7);
                        r.thuTime = String.valueOf(rs.getInt(9) + " - " + rs.getInt(10));
                        total += rs.getInt(10) - rs.getInt(9);
                        r.friTime = String.valueOf(rs.getInt(11) + " - " + rs.getInt(12));
                        total += rs.getInt(12) - rs.getInt(11);
                        r.satTime = String.valueOf(rs.getInt(13) + " - " + rs.getInt(14));
                        total += rs.getInt(14) - rs.getInt(13);
                        r.sunTime = String.valueOf(rs.getInt(15) + " - " + rs.getInt(16));
                        total += rs.getInt(16) - rs.getInt(15);
                        r.totalTime = String.valueOf(total);
                        publish(r);
                    }
                } catch (SQLException e) {
                    e.printStackTrace(System.err);
                }
                return data;
            }

            @Override
            protected void process(List<Row> chunks) {
                int n = getRowCount() + 1;
                System.out.println("Row Count = " + n);
                System.out.println("Chunks Size = " + chunks.size());
                for (Row row : chunks) {
                    data.add(row);
                }
                fireTableDataChanged();
            }

            @Override
            protected void done() {
                jpb.setIndeterminate(false);
                jpb.setValue(100);
            }
        }
    }

//Creates the Test DB with test names and working hours
    private static void createTestDatabase(int n) {
        ThreadLocalRandom r = ThreadLocalRandom.current();
        Connection conn = getConnection();
        try {
            Statement st = conn.createStatement();
            st.execute("create table city(fname varchar(10), lname varchar(10), mons int(2), mone int(2), tues int(2), tuee int(2), weds int(2), wede int(2), thus int(2), thue int(2), fris int(2), frie int(2), sats int(2), sate int(2), suns int(2), sune int(2))");
            Random gen = new Random();
            PreparedStatement ps = conn.prepareStatement(
                "insert into city values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
            for (int i = 0; i < n; i++) {
                ps.setString(1, "First" + i);
                ps.setString(2, "Last" + i);
                ps.setInt(3, r.nextInt(6, 12));
                ps.setInt(4, r.nextInt(13, 22));
                ps.setInt(5, r.nextInt(6, 12));
                ps.setInt(6, r.nextInt(13, 22));
                ps.setInt(7, r.nextInt(6, 12));
                ps.setInt(8, r.nextInt(13, 22));
                ps.setInt(9, r.nextInt(6, 12));
                ps.setInt(10, r.nextInt(13, 22));
                ps.setInt(11, r.nextInt(6, 12));
                ps.setInt(12, r.nextInt(13, 22));
                ps.setInt(13, r.nextInt(6, 12));
                ps.setInt(14, r.nextInt(13, 22));
                ps.setInt(15, r.nextInt(6, 12));
                ps.setInt(16, r.nextInt(13, 22));
                ps.execute();
            }
        } catch (SQLException ex) {
            ex.printStackTrace(System.err);
        }
    }

    private static Connection getConnection() {
        try {
            return DriverManager.getConnection(URL, "", "");
        } catch (SQLException e) {
            e.printStackTrace(System.err);
        }
        return null;
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new WorkerTest()::display);
    }
}