How to Retrieve value from JTextField in Java Swing

Question

How do we retrieve value from a textfield and actionPerformed    I need the value to be converted into String for further processing   I have created a textfield on clicking a button I need to store the value entered into a String can you please provide a code snippet

User · Answer

import java awt    import java awt event    import javax swing     public class Swingtest extends JFrame implements ActionListener       JTextField txtdata      JButton calbtn   new JButton  Calculate         public Swingtest                 JPanel myPanel   new JPanel            add myPanel           myPanel setLayout new GridLayout 3  2            myPanel add calbtn           calbtn addActionListener this           txtdata   new JTextField            myPanel add txtdata              public void actionPerformed ActionEvent e                if  e getSource      calbtn                String data   txtdata getText      perform your operation             System out println data                        public static void main String args                  Swingtest g   new Swingtest            g setLocation 10  10           g setSize 300  300           g setVisible true             now its working

User · Answer

How do we retrieve a value from a text field    mytestField getText      ActionListner example    mytextField addActionListener this    public void actionPerformed ActionEvent evt        String text   textField getText        textArea append text   newline       textField selectAll

User · Answer

testField getText     See the java doc for JTextField  Sample code can be   button addActionListener new ActionListener       public void actionPerformed ActionEvent ae         String textFieldValue   testField getText                  do some operation on value

User · Answer

First we declare JTextField like this   JTextField  testField   new JTextField 10      We can get textfield value in String like this on any button click event   button addActionListener new ActionListener       public void actionPerformed ActionEvent ae         String getValue   testField getText

User · Answer

Just use event getSource   frim within actionPerformed  Cast it to the component   for Ex  if you need combobox  JComboBox comboBox    JComboBox  event getSource    JTextField txtField    JTextField  event getSource      use appropriate api to get the value   for Ex   Object selected   comboBox getSelectedItem     etc

User · Answer

What I found helpful is this condition that is below   String tempEmail       JTextField tf1   new JTextField     tf1 addKeyListener new KeyAdapter        public void keyTyped KeyEvent evt            tempEmail     JTextField evt getSource    getText     String valueOf evt getKeyChar

User · Answer

You can use the getText   method anywhere in your code it is instancely called by your object  So you can use the method anywhere within a calass

[java] How to Retrieve value from JTextField in Java Swing?

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