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PONetBeans IDE issue adding grid layout
 

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  1. PONetBeans IDE issue adding grid layout
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    <p><img src="https://i.stack.imgur.com/LW5iy.png" alt="enter image description here"> I have created a design of my application with net beans programme . I would like to add a 30*30 grid layout something similar to sudoku .Actually I am trying to draw a 30*30 of squares for map. However , I am not able to add that view to my code .I have searched lots of places but I am not able to find an answer .I am open to your ideas. Could anyone help me in this subject please ? Thank you ! </p> <pre><code>/* * To change this template, choose Tools | Templates * and open the template in the editor. */ import java.awt.Color; import java.awt.Container; import java.awt.Font; import java.awt.GridLayout; import javax.swing.JTextField; public class NewJFrame extends javax.swing.JFrame { /** * Creates new form NewJFrame */ public NewJFrame() { initComponents(); } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // &lt;editor-fold defaultstate="collapsed" desc="Generated Code"&gt; private void initComponents() { getDirectionButton = new javax.swing.JButton(); questionTitle = new java.awt.Label(); questionText = new javax.swing.JTextField(); jScrollPane1 = new javax.swing.JScrollPane(); directionDescriptionArea = new javax.swing.JTextArea(); walkingManButton = new javax.swing.JButton(); java.awt.Panel mapPanel = new java.awt.Panel(); jButton1 = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); setTitle("DSL For Streets\n"); setPreferredSize(new java.awt.Dimension(1365, 730)); getDirectionButton.setText("Get Direction"); questionTitle.setFont(new java.awt.Font("Dialog", 3, 12)); // NOI18N questionTitle.setText("Please enter your question"); directionDescriptionArea.setColumns(20); directionDescriptionArea.setRows(5); jScrollPane1.setViewportView(directionDescriptionArea); walkingManButton.setFont(new java.awt.Font("Tahoma", 3, 11)); // NOI18N walkingManButton.setIcon(new javax.swing.ImageIcon(getClass().getResource("walk.png"))); // NOI18N walkingManButton.setText("Get Suggested Route"); walkingManButton.setFocusable(false); jButton1.setIcon(new javax.swing.ImageIcon(getClass().getResource("map.png"))); // NOI18N cells = new int[ROWS][COLS]; tfCells = new JTextField[ROWS][COLS]; // allocate JTextField array // Container cp = getContentPane(); //cp.setLayout(new GridLayout(ROWS, COLS)); mapPanel.setLayout(new GridLayout(ROWS, COLS)); // Create 9x9 JTextFields and place on the GridLayout for (int row = 0; row &lt; ROWS; row++) { for (int col = 0; col &lt; COLS; col++) { tfCells[row][col] = new JTextField(); // allocate element of array mapPanel. add(tfCells[row][col]); // ContentPane adds JTextField int number = puzzle[row][col]; tfCells[row][col].setText(""); // empty tfCells[row][col].setHorizontalAlignment(JTextField.CENTER); tfCells[row][col].setFont(new Font("Monospaced", Font.BOLD, 20)); } } javax.swing.GroupLayout mapPanelLayout = new javax.swing.GroupLayout(mapPanel); mapPanel.setLayout(mapPanelLayout); mapPanelLayout.setHorizontalGroup( mapPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(mapPanelLayout.createSequentialGroup() .addGap(181, 181, 181) .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 172, javax.swing.GroupLayout.PREFERRED_SIZE) .addContainerGap(239, Short.MAX_VALUE)) .addGroup(mapPanelLayout.createSequentialGroup() .addGap(0, 0, Short.MAX_VALUE)) ); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(36, 36, 36) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false) .addComponent(getDirectionButton, javax.swing.GroupLayout.PREFERRED_SIZE, 106, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(questionTitle, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 177, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(questionText, javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jScrollPane1) .addComponent(walkingManButton, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 451, Short.MAX_VALUE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(mapPanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(46, 46, 46)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(39, 39, 39) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addComponent(questionTitle, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(18, 18, 18) .addComponent(questionText, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(18, 18, 18) .addComponent(getDirectionButton, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(25, 25, 25) .addComponent(walkingManButton, javax.swing.GroupLayout.PREFERRED_SIZE, 48, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 359, Short.MAX_VALUE)) .addComponent(mapPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))) ); pack(); }// &lt;/editor-fold&gt; /** * @param args the command line arguments */ public static void main(String args[]) { /* Set the Nimbus look and feel */ //&lt;editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "&gt; /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel. * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html */ try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //&lt;/editor-fold&gt; /* Create and display the form */ java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new NewJFrame().setVisible(true); } }); } // Variables declaration - do not modify private javax.swing.JTextArea directionDescriptionArea; private javax.swing.JButton getDirectionButton; private javax.swing.JButton jButton1; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JTextField jTextField3; private javax.swing.JTextField questionText; private java.awt.Label questionTitle; private javax.swing.JButton walkingManButton; private javax.swing.JTextField a[]=new JTextField[30]; // End of variables declaration public static final int ROWS = 9; // ROWS by COLS cells public static final int COLS = 9; public static final int CELL_SIZE = 10; // Cell width/height public static final int CANVAS_WIDTH = CELL_SIZE * COLS; public static final int CANVAS_HEIGHT = CELL_SIZE * ROWS; private int[][] cells; private JTextField[][] tfCells; private int[][] puzzle =new int[9][9]; </code></pre> <p>}</p>
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