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PONeed jTable to show 10 rows after time delay then load new records after all displayed
 

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  1. PONeed jTable to show 10 rows after time delay then load new records after all displayed
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    <p><strong>SOLVED and EDITED with Working Version and left in case it can help someone else</strong></p> <p>The Rows of this jTable are being populated from a 2D String Array. The array will be dynamic. I need to only display 10 rows for 3 seconds, then display another 10 rows for 3 seconds, repeat this cycle until end of array then refill array and start cycle again.</p> <p>I can't find any examples of jTables using time delay to update table instead of buttons, data change etc.<br> <strong>EDIT</strong> - Fixed the rows to display with Timer ActionListener</p> <p>The rows to display will be selected from a jSpinner also but how can I implement the set Rows instead of showing all rows? Vertical and Horizontal scrolling is disabled in the jScrollPane.</p> <p><strong>EDIT</strong> - I am still stuck on how to "refill" and display the new records after displaying all records in my array 1 first time through..<strong>SOLVED with another Timer/ActionListener and new DefaultTableModel</strong></p> <pre><code>import java.awt.Dimension; import java.awt.Font; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*; import javax.swing.table.DefaultTableModel; public class DataTable2 { String [][] data; //2D Array (MultiDimensional) for Records. String [] titles; //Array for ColumnTitles JTable table; DefaultTableModel model; JScrollPane pane; JFrame frame; JPanel panel; public DataTable2(int rows, int radio){ //Fill Arrays. titles = setTitles2(radio); data = fill2(); //Timer Variables. final int SPEED = 4000;//3.5 sec delay for displaying number of rows on screen. int pause = 1000; //Row Variable final int R=rows;//For Timer ActionListener. //Components frame = new JFrame("Live Table"); panel = new JPanel(); model = new DefaultTableModel(data, titles); table = new JTable(model){ @Override public boolean isCellEditable(int rowIndex, int colIndex){ return false; }}; pane = new JScrollPane(table, ScrollPaneConstants.VERTICAL_SCROLLBAR_NEVER, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER); //Table Formatting...More Done but not shown in example to keep shorter. table.setRowHeight(100); table.setFont(new Font("Arial", Font.BOLD,24)); table.getTableHeader().setFont(new Font("Arial", Font.BOLD, 24)); //Modified Code derived from FixedRowsTable &lt;http://stackoverflow.com/questions/6175139/jtable-row-limitation&gt; by @Andrew Thompson //To show set number of rows of the table at a time. eg. 10 rows, timer, 10 rows, timer etc...... Dimension d = table.getPreferredSize(); Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); pane.setPreferredSize(new Dimension(screenSize.width-50, table.getRowHeight()*rows)); //Set as constants to be accessed by both ActionListeners. final int HEIGHT = table.getRowHeight()*(R); final JScrollBar BAR = pane.getVerticalScrollBar(); //Listener for Timer. ActionListener perform = new ActionListener(){ @Override public void actionPerformed(ActionEvent ae) { BAR.setValue(BAR.getValue()+HEIGHT); } }; //Listener for Timer 2. ActionListener update = new ActionListener(){ @Override public void actionPerformed(ActionEvent ae){ BAR.setValue(0);//Reset Row Height. DefaultTableModel model = new DefaultTableModel(data, titles); table.setModel(model); } }; //Timer. Timer timer = new Timer(SPEED, perform); timer.setRepeats(true); timer.start(); //Timer 2. double val = table.getRowCount();///R; int time = 0; //Formula to compensate for SwingTimer accepting only Integer Values. if(val%R!=0){ time=SPEED; } time+= (table.getRowCount()/R)*SPEED; //Timer 2 Timer timer2 = new Timer(time, update); timer2.setRepeats(true); timer2.start(); //Debug System.out.println(time); System.out.println(val); System.out.println(val%R); //Set Panel to Full Screen panel.setPreferredSize(new Dimension (screenSize.width,screenSize.height)); //Add Components. frame.add(panel); panel.add(pane); //Frame Close Operation. frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); //Table Constraints. table.getTableHeader().setReorderingAllowed(false); table.getTableHeader().setResizingAllowed(true); table.setShowVerticalLines(false); table.setShowHorizontalLines(true); //Apply Model to Table table.setModel(model); //Add table to scroll pane. pane.setViewportView(table); //Finish Frame frame.pack(); frame.setLocationByPlatform(false); frame.setVisible(true); } /** * Method to fill table with String values for testing outside of network. * @return String array of Records. */ private String[][] fill2(){ String[][] temp = {{"Record1", "Record2", "Record3", "Record4", "Record5", "Record6"}, {"Record7", "Record8", "Record9", "Record10", "Record11", "Record12"}, {"Record13", "Record14", "Record15", "Record16", "Record17", "Record18"}, {"Record19", "Record20", "Record21", "Record22", "Record23", "Record24"}, {"Record25", "Record26", "Record27", "Record28", "Record29", "Record30"}, {"Record31", "Record32", "Record33", "Record34", "Record35", "Record36"}, {"Record37", "Record38", "Record39", "Record40", "Record41", "Record42"}, {"Record43", "Record44", "Record45", "Record46", "Record47", "Record48"}, {"Record49", "Record50", "Record51", "Record52", "Record53", "Record54"}, {"Record55", "Record56", "Record57", "Record58", "Record59", "Record60"}, {"Record61", "Record62", "Record63", "Record64", "Record65", "Record66"}, {"Record67", "Record68", "Record69", "Record70", "Record71", "Record72"}, {"Record73", "Record74", "Record75", "Record76", "Record77", "Record78"}, }; return temp; } /** * Method to fill String array of column titles. * @param rad jRadioButton value from buttonGroup sent from main settings frame. * @return Column Titles */ private String[] setTitles2(int rad){ String[] t; if(rad==2){ t = new String[]{"TITLE1", "TITLE2"}; }else if(rad==5||rad==10){ t = new String[]{"TITLE1", "TITLE2", "TITLE3", "TITLE4", "TITLE5", "TITLE6", "TITLE7", "TITLE8"}; }else if(rad==6){ t = new String[]{"TITLE1", "TITLE2"}; }else if(rad==7){ t = new String[]{"TITLE1"}; }else if(rad==8||rad==9){ t = new String[]{"TITLE1", "TITLE2", "TITLE3", "TITLE4", "TITLE5"}; }else{ t=new String []{"TITLE1", "TITLE2", "TITLE3", "TITLE4", "TITLE5", "TITLE6"}; } return t; } //Main sample just to show table. public static void main(String[] args) { //Sample Value for Example. int x = 10; //Any Value from 1-10 will be used. 5 or 10 will be used most reguarly. int y = 1; //Any Value from 1-9 will be used. 1 will be used most reguarly. //Call Table. DataTable2 table = new DataTable2(x,y); } } </code></pre>
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