69 lines
1.8 KiB
Java
69 lines
1.8 KiB
Java
package library;
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import javax.swing.JFrame;
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import javax.swing.JOptionPane;
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import javax.swing.JPasswordField;
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/**
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* This class allows to display simple messages and have graphical interfaces to
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* enter words and characters.
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*
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* @version 2.0
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*
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*/
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public class Dialogs {
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/**
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* This function open a dialog box to enter a hidden String. The dialog box
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* asks for a String containing a minimum of one character.
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*
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* @param message
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* The message displayed to ask for the hidden String
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* @return The hidden String entered
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*/
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public static String getHiddenString(String message) {
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JPasswordField passwordField = new JPasswordField(10);
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JFrame frame = new JFrame(message);
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// prompt the user to enter their name
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JOptionPane.showMessageDialog(frame, passwordField, message, JOptionPane.PLAIN_MESSAGE);
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String s = new String(passwordField.getPassword());
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if (s.length() > 0)
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return s;
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else
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return getHiddenString("Enter at least one character");
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}
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/**
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* This function open a dialog box to enter a character. This function
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* accepts only one character.
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*
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* @param message
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* The message asking for the character.
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* @return The character entered.
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*/
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public static char getChar(String message) {
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JFrame frame = new JFrame("Input a character please");
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// prompt the user to enter their name
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String s = JOptionPane.showInputDialog(frame, message);
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if(s == null){
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System.exit(-1);
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}
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if (s.length() == 1)
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return s.charAt(0);
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else
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return getChar("Just one character");
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}
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/**
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* Open a dialog box to display a message.
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*
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* @param message
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* The message to display.
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*/
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public static void displayMessage(String message) {
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JOptionPane.showMessageDialog(null, message, null, JOptionPane.PLAIN_MESSAGE);
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}
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}
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