How To Calculate JTable Column Values Sum In Java
In this java Tutorial we will see How To Calculate JTable Column Values Sum And Display It In JTextFields In Java NetBeans .
Project Source Code:
package java_tutorials;
/**
*
* @author 1BestCsharp
*/
public class Java_JTable_Column_Values_Sum extends javax.swing.JFrame {
/**
* Creates new form Java_JTable_Column_Values_Sum
*/
public Java_JTable_Column_Values_Sum() {
initComponents();
// cal get sum function
getSum();
}
public void getSum()
{
int sum = 0;
for(int i = 0; i < jTable1.getRowCount(); i++)
{
sum = sum + Integer.parseInt(jTable1.getValueAt(i, 3).toString());
}
jTextField1.setText(Integer.toString(sum));
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jTextField1 = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
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 [][] {
{"1", "dcd", "ABC", "42"},
{"2", "ss", "rtyh", "14"},
{"3", "fs", "jhg", "62"},
{"4", "ynjhdg", "fg", "14"},
{"5", "uyt", "èiuy", "17"},
{"6", "nb", "oop", "26"},
{"7", "yui", "lkjh", "27"},
{"8", "rtyu", "jhg", "39"},
{"9", "jhgf", "dfg", "56"},
{"10", "gdsfe", "èiuytre", "46"}
},
new String [] {
"Id", "First Name", "Last Name", "Age"
}
));
jTable1.setRowHeight(30);
jScrollPane1.setViewportView(jTable1);
jTextField1.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
jLabel1.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
jLabel1.setText("Sum :");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
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(104, 104, 104)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 156, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(25, 25, 25)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 38, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 28, Short.MAX_VALUE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 334, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(39, 39, 39))
);
pack();
}// </editor-fold>
/**
* @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_JTable_Column_Values_Sum.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Java_JTable_Column_Values_Sum.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Java_JTable_Column_Values_Sum.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Java_JTable_Column_Values_Sum.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_JTable_Column_Values_Sum().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
////////////////OutPut
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| java jtable column values sum |
1 comments:
commentsit's very good tuto.but i need else help.i want to know how doing product with two columns and display result in last column.
Reply