Java Multiplication Table

How To Create Multiplication Table In Java

java multiplication table



In this Java Tutorial we will see How To Make Multiplication Table Using JTable
In Java NetBeans .




Project Source Code:


import java.awt.Font;
import javax.swing.JLabel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;

/**
 *
 * @author 1BestCsharp
 */
public class Java_Multiplication_Table extends javax.swing.JFrame {

    /**
     * Creates new form Java_Multiplication_Table
     */
    public Java_Multiplication_Table() {
        initComponents();
        jComboBox1ActionPerformed(null);
    }

    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jComboBox1 = new javax.swing.JComboBox<>();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTable1.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {

            },
            new String [] {

            }
        ));
        jScrollPane1.setViewportView(jTable1);

        jComboBox1.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
        jComboBox1.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15" }));
        jComboBox1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jComboBox1ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 249, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(80, 80, 80)
                .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 92, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(172, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(140, 140, 140)
                        .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap(36, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>                        

    private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {                                           
        
        Object[] column = {"<<"+jComboBox1.getSelectedItem()+">>"};
        // clear jtable
        jTable1.setModel(new DefaultTableModel(null,column));
        
        // change jtable header font size
        jTable1.getTableHeader().setFont(new Font("SansSerif", Font.BOLD, 25));
        
        // center jtable header text
        ((DefaultTableCellRenderer)jTable1.getTableHeader()
           .getDefaultRenderer()).setHorizontalAlignment(JLabel.CENTER);
        
        DefaultTableModel model = (DefaultTableModel)jTable1.getModel();
        model.setColumnIdentifiers(column);
        
        int num = Integer.parseInt(jComboBox1.getSelectedItem().toString());
        
        for(int i = 1; i < 16; i++)
        {
            int result = num * i;
            model.addRow(new Object[]{num + " X " + i + "=" + result});
        }
        
    }                                          

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* 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(Java_Multiplication_Table.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Java_Multiplication_Table.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Java_Multiplication_Table.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Java_Multiplication_Table.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Java_Multiplication_Table().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JComboBox<String> jComboBox1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    // End of variables declaration                   
}



////// OUTPUT : 
java multiplication table in netbeans

Share this

Related Posts

Previous
Next Post »