jpasswordfield

How to check if JPassword field is null

由 柔情痞子 提交于 2019-12-02 03:37:03
问题 I want to check the username and password in Swing. The check works for username, but it doesn't work for JPaswordfield. I am posting the related code: //Here I get the password Char[] pwd = jt1.getPassword(); String s = new String(pwd); //converting char to string String p = s; //In the JButton checking username and password(Username check works fine but not passwordfield) jb.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if ((jt.getText().length()) ==

Displaying the password in a JPasswordField rather than setting 0 as an echo char

由 ぐ巨炮叔叔 提交于 2019-12-01 22:01:51
问题 How do I display the text of a JPasswordField rather than set 0 as an echo char? Java Docs says: Setting a value of 0 indicates that you wish to see the text as it is typed, similar to the behavior of a standard JTextField. The following results in an Incompatible types error outField.setEchoChar(0); wheras outField.setEchoChar('0'); simply sets 0 as the echo char (displays 0s for every digit). The reason for using JPasswordField over JTextField is that I want to change the echo char and hide

replacing the dot character in the password field, Jframe, Java

由 拈花ヽ惹草 提交于 2019-12-01 13:21:39
I want to ask how can i change the character in the password field that was the point I want to replace with a star ??? i'm using Jframe, Java nukebauer PasswordTextField.setEchoChar('*'); 来源： https://stackoverflow.com/questions/13390247/replacing-the-dot-character-in-the-password-field-jframe-java

replacing the dot character in the password field, Jframe, Java

由 ◇◆丶佛笑我妖孽 提交于 2019-12-01 11:06:14
问题 I want to ask how can i change the character in the password field that was the point I want to replace with a star ??? i'm using Jframe, Java 回答1: PasswordTextField.setEchoChar('*'); 来源： https://stackoverflow.com/questions/13390247/replacing-the-dot-character-in-the-password-field-jframe-java

JPasswordField KeyPress string length error?

由 你离开我真会死。 提交于 2019-11-29 14:00:20
I am trying to change background colors of a JPasswordField in Java Swing (Netbeans). Here's what I have: private void pstxtPasswordKeyPressed(java.awt.event.KeyEvent evt) { //Get string from password box userPassword = new String(pstxtPassword.getPassword()); //If password is 8+ characters //(one less because string counting begins at 0) if (userPassword.length() >= 7) { //Set password input box background color to green pstxtPassword.setBackground(Color.green); } else { //If password is less than 8 characters //Set password input box background color to red pstxtPassword.setBackground(Color

JPasswordField security with action command

由 喜欢而已 提交于 2019-11-29 10:39:38
I am using a JPasswordField in my program. When I ask getPassword() , I get a char[] array. But when I add an ActionListener to the JPasswordField and ask getActionCommand() , I get the password as a String . Is this password save in the event object as String ? Isn't this a security issue? When you set no action command for a component, the text in it will be the action command. This is why you are getting the password. Even for JTextField also JTextField jt=new JTextField("text"); jt.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent ae) { System.out.println(ae

JPasswordField KeyPress string length error?

由 回眸只為那壹抹淺笑 提交于 2019-11-28 07:53:36
问题 I am trying to change background colors of a JPasswordField in Java Swing (Netbeans). Here's what I have: private void pstxtPasswordKeyPressed(java.awt.event.KeyEvent evt) { //Get string from password box userPassword = new String(pstxtPassword.getPassword()); //If password is 8+ characters //(one less because string counting begins at 0) if (userPassword.length() >= 7) { //Set password input box background color to green pstxtPassword.setBackground(Color.green); } else { //If password is

JPasswordField security with action command

由 隐身守侯 提交于 2019-11-28 04:02:58
问题 I am using a JPasswordField in my program. When I ask getPassword() , I get a char[] array. But when I add an ActionListener to the JPasswordField and ask getActionCommand() , I get the password as a String . Is this password save in the event object as String ? Isn't this a security issue? 回答1: When you set no action command for a component, the text in it will be the action command. This is why you are getting the password. Even for JTextField also JTextField jt=new JTextField("text"); jt

Moving JPasswordField to absolute position

由 最后都变了- 提交于 2019-11-28 02:29:18
I have this code: import java.awt.Color; import java.awt.Component; import java.awt.Dialog.ModalityType; import java.awt.Dimension; import java.awt.Graphics; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.GridLayout; import java.awt.Insets; import java.awt.event.ActionEvent; import java.awt.image.BufferedImage; import java.io.IOException; import java.net.URL; import javax.imageio.ImageIO; import javax.swing.*; public class DialogExample extends JPanel { private static final int COLUMN_COUNT = 10; private static final int I_GAP = 3; public static final String

validate a table's cell using editors

由 最后都变了- 提交于 2019-11-28 00:25:10
I have a Password field editor for my JTable. I want to display an error message if the text length is less than 8 bit when the user clicks to edit another field. I have tried focus listeners. But its not working. Please help me because i have just started workin with java swing. class PasswordEditor extends DefaultCellEditor { TextBox m_passWord = new TextBox(); public PasswordEditor() { super(new TextBox()); } @Override public Object getCellEditorValue() { return this.m_passWord.getText(); } @Override public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected
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