Structure of the Problem Requirements
In this problem we will learn how to show and hide text in text field using Netbeans IDE. Netbeans is used for making Java desktop application and much more. Text fields are used to received input from the user or display some text on a specific text area. In this problem we have two button one is Show and second is hide. When user press show button the program show some text on the text area and when press hide the program hide that text. Here is the source code of this problem which help you in better understanding.
Source Code
import java.awt.Color;
/**
* 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")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());
jPanel1.add(jTextField1, new org.netbeans.lib.awtextra.AbsoluteConstraints(70, 180, 237, 38));
jButton1.setText("Show");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jPanel1.add(jButton1, new org.netbeans.lib.awtextra.AbsoluteConstraints(110, 110, -1, -1));
jButton2.setText("Hide");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public voidactionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jPanel1.add(jButton2, new org.netbeans.lib.awtextra.AbsoluteConstraints(200, 110, 60, -1));
jLabel1.setFont(new java.awt.Font("Tahoma", 0, 24)); // NOI18N
jLabel1.setText(" LEP ");
jPanel1.add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(110, 10, 180, 30));
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 430, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 331, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private voidjButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jButton1.addActionListener(null);
jButton2.setBackground(Color.GRAY);
jButton1.setBackground(Color.red);
jTextField1.setText("Welcome to Let Enjoy Programming ");
}
private voidjButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jButton2.addActionListener(null);
jButton1.setBackground(Color.GRAY);
jButton2.setBackground(Color.red);
jTextField1.setText("");
}
/**
* @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(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);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(newRunnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JPanel jPanel1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
Output of the Program
 |
| Text Display into Text Area |
.jpg "Text Hide From Text Area") |
| Text Hide From Text Area |
Asad Niazi is Software Engineer , Programmer, Web Developers and a young mentor of Tech Solutions Desk and Blogging Solutions . Asad Love to writes about Technology, Programming, Blogging and make money online.
Nice, You are doing such a great Job.. Carry on dear Students :)
ReplyDeleteNicee, but i can do it also using vb it is easy :)
ReplyDeleteThis is in vb:
ReplyDeleteJust define a as public variable in general as follow:
Public a As String
--------------------------------------------------------------------------------------------------------------
and in Show button type the following code:
Text1.Text = Text1.Text & a
----------------------------------------------------------------------------------------------------------------
And in the Hide button type the following code:
a=Text1.Text
Text1.Text=""
-----------------------------------------------------------------------------------------------------------------
Regards
Ali Sattar :)