fork download 
  1. import java.awt.*;
  2. import java.awt.event.*;
  3. import javax.swing.*;
  4. import javax.swing.border.EmptyBorder;
  5. import javax.swing.table.DefaultTableModel;
  6.  
  7. public class CustomerForm extends JPanel {
  8.  
  9. 	JButton btnAdd, btnUpdate, btnDelete, btnReset;
  10. 	JTextField txtId, txtName, txtContact;
  11. 	JTable customersTable;
  12. 	DefaultTableModel tableModel;
  13.  
  14. 	public CustomerForm() {
  15. 		super(true); 
  16. 		btnAdd = new JButton("Add");
  17. 		btnUpdate = new JButton("Update");
  18. 		btnDelete = new JButton("Delete");
  19. 		btnReset = new JButton("Reset");
  20. 		txtId = new JTextField();
  21. 		txtName = new JTextField();
  22. 		txtContact = new JTextField();
  23. 		customersTable = new JTable();
  24.  
  25. 		JPanel fieldsPanel = new JPanel(new GridLayout(3, 2, 5,5));
  26. 		fieldsPanel.add(new JLabel("Customer ID:"));
  27. 		fieldsPanel.add(txtId);
  28. 		fieldsPanel.add(new JLabel("Name"));
  29. 		fieldsPanel.add(txtName);
  30. 		fieldsPanel.add(new JLabel("Contact Number:"));
  31. 		fieldsPanel.add(txtContact);
  32. 		JPanel buttonsPanel = new JPanel(new FlowLayout());
  33. 		buttonsPanel.add(btnAdd);
  34. 		buttonsPanel.add(btnUpdate);
  35. 		buttonsPanel.add(btnDelete);
  36. 		buttonsPanel.add(btnReset);
  37.  
  38. 		// by default update and delete should be disable since no record has been selected yet
  39. 		btnUpdate.setEnabled(false);
  40. 		btnDelete.setEnabled(false);
  41.  
  42. 		tableModel = new DefaultTableModel();
  43. 		customersTable.setModel(tableModel);
  44. 		tableModel.addColumn("ID");
  45. 		tableModel.addColumn("NAME");
  46. 		tableModel.addColumn("CONTACT");
  47.  
  48. 		// enable scroll for the table
  49. 		JScrollPane tablePane = new JScrollPane(customersTable);
  50.  
  51. 		this.setLayout(new GridLayout(3,0));
  52. 		this.add(fieldsPanel);
  53. 		this.add(buttonsPanel);
  54. 		this.add(tablePane);
  55.  
  56. 		// adds a border to the panel
  57. 		this.setBorder(new EmptyBorder(10, 10, 10, 10));
  58.  
  59. 		// adds text field  entries to the table model
  60. 		// this change in the model in turn repaints the table
  61. 		btnAdd.addActionListener(new ActionListener(){  
  62. 			public void actionPerformed(ActionEvent e){  
  63.           tableModel.addRow(new Object[]{txtId.getText(), txtName.getText(),txtContact.getText()});
  64. 					clearTexts();						
  65.         }  
  66.     });
  67.  
  68. 		btnUpdate.addActionListener(new ActionListener(){  
  69. 			public void actionPerformed(ActionEvent e){
  70. 					tableModel.setValueAt(txtId.getText(), customersTable.getSelectedRow(), 0);
  71. 					tableModel.setValueAt(txtName.getText(), customersTable.getSelectedRow(), 1);
  72. 					tableModel.setValueAt(txtContact.getText(), customersTable.getSelectedRow(), 2);
  73.         }  
  74.     });
  75.  
  76. 		// deletes the selected table row from the model
  77. 		btnDelete.addActionListener(new ActionListener(){  
  78. 			public void actionPerformed(ActionEvent e){  
  79.         tableModel.removeRow(customersTable.getSelectedRow());
  80. 				clearTexts();						
  81.         }  
  82.     });
  83.  
  84. 		// empties the text field to enable addition of new entry
  85. 		// The update and delete buttons are also disabled
  86. 		btnReset.addActionListener(new ActionListener(){  
  87. 			public void actionPerformed(ActionEvent e){  
  88.         clearTexts();
  89. 				btnAdd.setEnabled(true);
  90. 				btnUpdate.setEnabled(false);
  91. 				btnDelete.setEnabled(false);
  92.         }  
  93.     });
  94.  
  95. 		// updates the text fields with the selected row data
  96. 		customersTable.addMouseListener(new java.awt.event.MouseAdapter() {
  97.             public void mouseClicked(java.awt.event.MouseEvent evt) {
  98.                 tableRowSelected(evt);
  99.             }
  100.         });
  101. 	}
  102.  
  103. 	private void clearTexts(){
  104. 		txtId.setText("");
  105. 		txtName.setText("");
  106. 		txtContact.setText("");
  107. 	}
  108.  
  109. 	private void tableRowSelected(java.awt.event.MouseEvent evt) {                                     
  110.  
  111. 			// disable add button when a row as been selected on the table
  112. 			// we only require row selection for update and delete
  113. 			btnAdd.setEnabled(false);
  114.  
  115. 			// re-enable update and delete button as required
  116. 			btnUpdate.setEnabled(true);
  117. 			btnDelete.setEnabled(true);
  118.  
  119.       // get the selected row index
  120.       int selectedRowIndex = customersTable.getSelectedRow();
  121.  
  122.       // set the selected table row data into the text fields
  123.       txtId.setText(tableModel.getValueAt(selectedRowIndex, 0).toString());
  124.       txtName.setText(tableModel.getValueAt(selectedRowIndex, 1).toString());
  125.       txtContact.setText(tableModel.getValueAt(selectedRowIndex, 2).toString());
  126.  
  127.     }       
  128.  
  129. 	public static void main(String[] args) {
  130. 			JFrame frame = new JFrame("Manage Customers");
  131.  
  132. 			WindowListener l = new WindowAdapter() {
  133. 					public void windowClosing(WindowEvent e) {System.exit(0);}
  134. 			};
  135. 			frame.addWindowListener(l);
  136.  
  137. 			frame.add("Center", new CustomerForm());
  138. 			frame.setSize(400,400);
  139. 			frame.show();
  140.     }
  141. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
Main.java:7: error: class CustomerForm is public, should be declared in a file named CustomerForm.java
public class CustomerForm extends JPanel {
       ^
Note: Main.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
1 error
stdout 
Standard output is empty
https://ideone.com/ojzpTS
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!