jtextfield

问题 I am trying to have several JTextFields on a single row, but I don't want them to have the same width. How can I control the width and make some of them wider than others? I want that they together take up 100% of the total width, so it would be good if I could use some kind of weigthing. I have tried with .setColumns() but it doesn't make sense. Here is an example, where I am using three rows with three strings that should appear as in columns: import java.awt.GridLayout; import javax.swing

问题 I have created number of text fields and I'm wonder how can I switch the focus between the fields by pressing the enter key. In addition, Can I control the Target field ? for example can I defined that by pressing Enter in field A the focus will be change to field C ? 回答1: Simple example: Suppose you have two JTextField s: textField and textField1 textField.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { textField1.requestFocusInWindow(); } });

问题 I have done a sample project in netbeans of registration. In the jtextfield1 is the user id and Jtextfiled7 is country, Both must in characters not in numeric or not allowed spaces and special characters.how it is possible? 回答1: @Vivek , I have the answer for this question you asked. please do as per following instructions. In Netbeans right click on JTextfield and select the events>>key>>key typed and enter the following code between the codes. the following is the code for it for only

问题 So I want to get a JTexField to put the text in it into a JTextArea when the enter key is pressed with the cursor in it. Can anyone help? 回答1: Forget about using KeyListener for Swing components. This listener was designed for use with AWT components does not provide a reliable interaction mechanism for JTextComponents . Use an ActionListener instead - on the vast majority of systems an ActionEvent is dispatched by the JTextField when enter is pressed. myTextField.addActionListener(new

问题 Is there an easy way to validate a group of JTextFields in Java . I am currently using sqlite manager , neatbeans IDE to create a simple form that collects information to add a job into the database. I realise there is too many JTextFields. How can I validate each JTextFields either through sqllite throwing an exception error which can be customised, or maybe in Neatbeans through properties dialogue box. Validation is to be presence check, i.e. has a value been entered. Custom validation

问题 I need to do this: Value Change Listener to JTextField I'm trying the solution of Condemwnci, but I'm getting that error in the line: textField.getDocument().addDocumentListener(new DocumentListener() that in my case is: jtxtfBuscarInv.getDocument().addDocumentListener(new DocumentListener() In my case I want update rows in a Jtable, so my method will be this: ordenador.setRowFilter(RowFilter.regexFilter(jtxtfBuscarInv.getText(), 0)); I'm on linux, ubuntu 11.10, using Eclipse if that matters.

问题 I have two JTextfields, I want the value/text of second Textfield to change based on any change in value/text made in first TextField Here is what I am doing textField_15 = new JTextField("100"); textField_15.setEditable(false); textField_15.setColumns(10); textField_15.setBounds(161, 253, 86, 20); panel_3.add(textField_15); textField_14 = new JTextField(); textField_14.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { int az = Integer.parseInt(textField

问题 I have problem with Text Field Auto Calculation in JAVA using Netbeans 7.2 My Question is if I will input numeric values in Text Field i-e (admission fee, monthly fee, transport fee etc) for auto addition and then input numeric values in Text Field i-e (dues) to auto subtract from the above auto addition before clicking submit Button to insert the total values in database so how i will get result of those numeric values in Text Field (Total) before clicking submit Button. Please check

问题 I am working on Java 7. I am trying to format text by using HTML tags. I pass in text into JTextField text = new JTextField(); text.setText("<html><body><p>The program performs encryption operations on the following ciphers: </p></body></html>"); But the program prints the HTML tags too. That sample of text is only an example. What might be the problem? Cheers 回答1: JTextField does not support HTML. You could use JTextPane instead: JTextPane text = new JTextPane(); text.setContentType("text

问题 I recently built and completed the first stage of a program in java that worked with IDE using System.out.println(); and what not. Now, I want to give this program a GUI and I ran into an issue. Here is my MCV example (or at least I think it is, let me know if it is not). import java.net.*; import java.net.UnknownHostException; import java.net.NoRouteToHostException; import java.io.*; import net.sf.json.*; import org.apache.commons.lang.exception.*; import javax.swing.JFrame; import javax