Code Enumeration<TableColumn> columns = table.getColumnModel().getColumns(); while ( columns.hasMoreElements() ) { TableColumn column = columns.nextElement(); System.out.println( column.getHeaderValue() ); } or TableColumnModel columnModel = table.getColumnModel(); for ( int index = 0; index < columnModel.getColumnCount(); index += 1 ) { TableColumn column = columnModel.getColumn( index ); System.out.println( column.getHeaderValue() ); } remove the headings (text over columns) of the visible columns as shown in the table. for ( int index = 0; index < table.getColumnCount(); index += 1 ) { System.out.println( table.getColumnName( index ) ); } He'll take names. TableModel.getColumnName( int index ) The column is displayed.

Component cell It's always the same object, so he's got to ask color every time:if (cellvalue.equals("1")) { cell.setBackground(Color.RED); } else { cell.setBackground(table.getBackground()); } If you need to paint only cells with units, that's the code that picks the cell value in the name column. "1":String cellvalue = table.getValueAt(row, table.getColumnModel().getColumnIndex("1")).toString(); and should be replaced by String cellvalue = value.toString(); Method parameter value contains the meaning of the current cell.

You need to report the table that editing is complete. Otherwise, the table considers that the cell is still editing and does not rewrite it. There's a method. AbstractCellEditor.stopCellEditing♪ You can add yours. ButtonEditor.getTableCellEditorComponent Another push-button listener:public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) { jButton = (JButton) value; jButton.addActionListener( new ActionListener() { @Override public void actionPerformed(ActionEvent e) { ButtonEditor.this.stopCellEditing(); jButton.removeActionListener( this ); } }); return (JButton) value; } Please note that anonymous class is used, not a lambda, since it needs to be referred to for the removal of the listener.this) We can do it. ButtonEditor implementation ActionListener♪

The heading of the table should be defined to indicate tooltip for each column. Example http://www.java2s.com/Tutorial/Java/0240__Swing/JTablewithTooltip.htm

Put the cycle in a separate flow and it all worked.Thread worker = new Thread(){ public void run(){ ArrayList<Request> requests = buildRequests(); // forming requests //__________отображение данных в цикле int k=0; while(k < 5){ ParseTable work = new ParseTable(requests); ArrayList<String> answer = work.getOut(); for(int i=0; i < answer.size();i++) { model.setValueAt(answer.get(i), i, 4); model.fireTableCellUpdated(i, 4); } try {Thread.sleep(100); } catch (InterruptedException ex) {}; k++; } //_______________отображение данных в цикле } }; worker.start();

Create a separate method that will fill the table(s) from the OBD and make it into the table) and call it at the beginning of the GUI.Then on the button, you leave the request and then you rewrite the table.So the table will always be filled with relevant data.I would advise you to create a separate class describing your element of the table.public class User{ private int id; private int userId; private int summ; private Date date; Add the hetters and operate them instead of Object♪ try { Object[] deposit = null; resultSet = statement.executeQuery("SELECT * FROM deposits"); while (resultSet.next()) { deposit = new Object[4]; for (int i = 0; i < 4; i++) deposit[i] = resultSet.getObject(i + 1); depositsTableMode.addDeposit(deposit); } } catch (SQLException e1) { e1.printStackTrace(); } into a separate method to complete the List and return it.Upon application to the button to comply with the request for an OBD service, then call the method and get a list of fresh User and edit the table.

Totally.In class. Person Take it. static Ooh. id and method getid()♪ It won't belong to the person individually and every next person will re-wipe it. incomprehensible design: String[][] data = {{String.valueOf(person.id), person.fName, person.lName, String.valueOf(person.age)}}; No need at all. Because:Like you're getting your personal collection.ArrayList<Person> myPersons = init(); You can then proceed with a smooth initialization of the mass with the required size:String[][] data = new String[myPersons.size()][col.length]; In the end, the data will be added in the cycle:int i = 0; for (Person myPerson : myPersons) { data[i][0] = String.valueOf(myPerson.getid()); data[i][1] = myPerson.fName; data[i][2] = myPerson.lName; data[i][3] = String.valueOf(myPerson.age); i++; } and stick it in the table. table = new JTable(data, col);

If anyone's interested, I've done this: By pushing the button down, I'm creating a new table model that's less than one column and putting this model in the table.

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Ooh. TableRowSorter method https://docs.oracle.com/javase/8/docs/api/javax/swing/DefaultRowSorter.html#setComparator-int-java.util.Comparator- which allows a comparison of the values in the column. If you make it through the mass, there's something like that: // отмазка: я знаю, что хранить деньги, как число с плавающей точкой - плохо, // но в примере сойдет. Object[][] rowData = { { "строка 1", new Object[] {100.50d, "руб"} }, { "строка 2", new Object[] {5d, "$"} }, { "строка 3", new Object[] {89.99d, "\u20A4"} }, { "строка 4", new Object[] {-8d, "$"} }, { "строка 5", new Object[] {1000d, "$"} }, { "строка 6", new Object[] {1d, "руб"} }, }; Object[] columnNames = { "caption", "currency" }; DefaultTableModel model = new DefaultTableModel( rowData, columnNames ); JTable table = new JTable( model ); table.getColumnModel().getColumn( 1 ).setCellRenderer( new CurrencyRenderer() ); TableRowSorter&lt;DefaultTableModel&gt; sorter = new TableRowSorter&lt;DefaultTableModel&gt;( model ); // реализация компаратора sorter.setComparator( 1, new Comparator&lt;Object&gt;() { @Override public int compare( Object o1, Object o2 ) { Object[] record1 = (Object[])o1; Object[] record2 = (Object[])o2; // сначала сравниваются валюты (как строки) int result = ((String)record1[1]).compareTo( (String)record2[1] ); // если валюты одинаковые, то значения сумм (как Double) return result != 0 ? result : ((Double)record1[0]).compareTo( (Double)record2[0]); } }); table.setRowSorter( sorter ); The work with the mass is causing horror and accent. It's worth thinking about making money in a separate class:public static class Money { String currency; Double value; public Money( Double value, String currency ) { this.value = value; this.currency = currency; } public String currency() { return currency; } public Double value() { return value; } } Then in Java 8, you can create a comparator with the same behavior:Comparator<Money> comparator = Comparator.comparing( Money::currency ).thenComparing( Money::value ); Another class can support the interface. ComparableAnd then TableRowSorter Use it. compareTo♪ There's still a need to redesign. tableModel.getColumnClass( int column )I want him back. Money.class For the right column.

The thing is, when you move the columns, they really change places on the list of columns. ColumnModelAnd so, TableModel.getValueAt The location of the cell is already recalculated in the model space (the meaning of the field) TableColumn.modelIndex) So when you put the third column on site one, the first column shows up. getValueAt( rowIndex, 2 ), you take a column on index 2 from the model, but the middle column that was responsible for the name withdrawal has already moved there.I think it's best to keep track numbers on the table. Make the list. Field to access data, fill it in in the model designer, as you do now. CustomColumnModeland return the column's name. TableModel.getColumnName(int)♪ A TableColumnModel Don't touch anything.public class CustomDataModel extends AbstractTableModel { private CustomItem[] dataList = new CustomItem[3]; private List&lt;Field&gt; fields = new ArrayList&lt;&gt;(); public CustomDataModel( Class&lt;?&gt; tClass ) { this.dataList = new CustomItem[3]; this.dataList[0] = new CustomItem(1, "Fist", new Date()); this.dataList[1] = new CustomItem(2, "Second", new Date()); this.dataList[2] = new CustomItem(3, "Third", new Date()); for (Field tField : tClass.getDeclaredFields()){ tField.setAccessible(true); fields.add( tField ); } } @Override public int getRowCount() { return this.dataList.length; } @Override public int getColumnCount() { return this.fields.size(); } @Override public String getColumnName( int column ) { return fields.get( column ).getName(); } // можно возвращать тип столбца, тогда JTable будет выбирать соотв. TableCellRenderer // @Override // public Class<?> getColumnClass( int column ) { // return fields.get( column ).getType(); // } @Override public Object getValueAt(int rowIndex, int columnIndex) { try { Field tField = fields.get( columnIndex ); return tField.get(dataList[rowIndex]); } catch (IllegalAccessException e) { return "IllegalAccessExeption"; } } } public class CustomTable extends JTable{ private CustomDataModel dataModel; public CustomTable() { setAutoCreateColumnsFromModel( true ); // не забудьте вернуть автосоздание dataModel = new CustomDataModel( CustomItem.class ); setModel( dataModel ); } } Either you can go. getValueAt Look for a proper matching column columnIndex and tableColumn.getModelIndex()or use methods jTable.convertColumnIndexToView( columnIndex ) (but you need to keep the reference to the table in the model) or sun.swing.SwingUtilities2.convertColumnIndexToView( columnModel, columnIndex )that do the same.

Try using. table.getColumnModel().setColumnSelectionAllowed( true );

Just follow. AbstractTableModel♪ I doubt you're going to need a caste of all the interface techniques. TableModel♪ public class CarTableModel extends AbstractTableModel { private List&lt;Car&gt; cars = new ArrayList&lt;&gt;(); private String[] columns = { "mark", "model", "color", "price" }; public CarTableModel(List&lt;Car&gt; cars) { super(); this.cars = new ArrayList&lt;&gt;(cars); } @Override public int getRowCount() { return cars.size(); } @Override public int getColumnCount() { return columns.length; } @Override public Object getValueAt(int rowIndex, int columnIndex) { switch ( columnIndex ) { //.. } return null; } @Override public void setValueAt(Object aValue, int rowIndex, int columnIndex) { Car car = cars.get(rowIndex); switch ( columnIndex ) { case 0: car.setMark((String) aValue); break; case 1: car.setModel((String) aValue); break; //.. etc } fireTableCellUpdated(rowIndex, columnIndex); } } Besides, no one's stopping you from changing them.

Example: import java.awt.Dimension; import java.awt.FlowLayout; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.SwingUtilities; public class JTableExample { //Массив содержащий заголоки таблицы Object[] headers = { "Name", "Surname", "Telephone" }; //Массив содержащий информацию для таблицы Object[][] data = { { "John", "Smith", "1112221" }, { "Ivan", "Black", "2221111" }, { "George", "White", "3334444" }, { "Bolvan", "Black", "2235111" }, { "Serg", "Black", "2221511" }, { "Pussy", "Black", "2221111" }, { "Tonya", "Red", "2121111" }, { "Elise", "Green", "2321111" }, }; //Объект таблицы JTable jTabPeople; JTableExample() { //Создаем новый контейнер JFrame JFrame jfrm = new JFrame("JTableExample"); //Устанавливаем диспетчер компоновки jfrm.getContentPane().setLayout(new FlowLayout()); //Устанавливаем размер окна jfrm.setSize(300, 170); //Устанавливаем завершение программы при закрытии окна jfrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Создаем новую таблицу на основе двумерного массива данных и заголовков jTabPeople = new JTable(data, headers); //Создаем панель прокрутки и включаем в ее состав нашу таблицу JScrollPane jscrlp = new JScrollPane(jTabPeople); //Устаналиваем размеры прокручиваемой области jTabPeople.setPreferredScrollableViewportSize(new Dimension(250, 100)); //Добавляем в контейнер нашу панель прокрути и таблицу вместе с ней jfrm.getContentPane().add(jscrlp); //Отображаем контейнер jfrm.setVisible(true); } public static void main(String[] args) { //Создаем фрейм в потоке обработки событий SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new JTableExample(); } }); } } Skinshot:

For interaction JScrollPane responds to the interface javax.swing.Scrollable♪♪ https://stackoverflow.com/a/6104955 Participant https://stackoverflow.com/users/131872/camickr en.SO shows how to redesign the method getScrollableTracksViewportWidth Ooh. JTablein order to achieve the:public boolean getScrollableTracksViewportWidth() { return getPreferredSize().width < getParent().getWidth(); }; Method returned trueif the screen panel is to establish the width of the table on the size of the visible window (viewport).Decision finalized https://stackoverflow.com/a/15240806 the width of the first column, if the size of the table did not exceed the size of the apparent area, could not be changed without further refinement.

Code from https://stackoverflow.com/a/25570812 :JTable table = new JTable(){ @Override public Component prepareRenderer(TableCellRenderer renderer, int row, int column) { Component component = super.prepareRenderer(renderer, row, column); int rendererWidth = component.getPreferredSize().width; TableColumn tableColumn = getColumnModel().getColumn(column); tableColumn.setPreferredWidth(Math.max(rendererWidth + getIntercellSpacing().width, tableColumn.getPreferredWidth())); return component; } }; table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); The code at the rearing of the cell takes the preferred width for the cell structure and sets it as the width of the column if the width of the column is smaller. A change in the preferred width would trigger another rewriting of the table. If you have a long table, the width of the columns will change as the cells with large contents appear on the screen.♪ https://stackoverflow.com/a/13037771 There is an example of the installation of the width and height of the table cells by a separate method.

Reschedule. JTable.prepareEditor(TableCellEditor, int, int):@Override public Component prepareEditor(TableCellEditor editor, int row, int column) { final Component editorComponent = super.prepareEditor(editor, row, column); if ( editorComponent instanceof JComponent ) { ((JComponent)editorComponent).setBorder( new LineBorder( Color.RED ) ); } return editorComponent; } The method is triggered when editing is activated and in itself JTable Got it. TableCellEditor Visual component selected for editing.

The problem was: table2.setBounds(280, 100, 170, 160); table2.setModel(new DefaultTableModel(buf2, columnNames)); table2.getColumnModel().getColumn(0).setWidth(120); table2.getColumnModel().getColumn(1).setMaxWidth(50); This is my case, buf2 is a two-storey massive. After that machination, he added a label on the frime, and it worked.

From the table, we have to call a method getModel() that will give you back the table model, and from it, we'll get ValueAt(i, j), which will give you the required element.However, if you have a sorting, filtering or something like this, the indices should be converted into convertRowIndexToModel() and convertCollumnIndexToModel() before calling get ValueAt(), otherwise very different values can be obtained. There are methods of reverse transformation - convertRowIndexToView() and convertCollumnIndexToView() that are used, if not mistakenly, for software selection of the line.

For imagingImageIcon icon = new ImageIcon("image.gif"); table.setValueAt(icon, row, column);