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HelpClass.java
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HelpClass.java
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import javax.swing.JOptionPane;
/**
* This class is used to display a help dialogue box.
* It is a subclass of the SudokuGUI class.
* It inherits all the methods and variables of the SudokuGUI class.
*
* @author Arun Kumar Sekar
* @version January 2024
*/
public class HelpClass extends SudokuGUI {
/**
* Constructor for objects of class HelpClass
* Calls the constructor of the SudokuGUI class
*/
public HelpClass() {
super();
}
/**
* Displays a help dialogue box
* It is called when the 'Help' button is clicked
*/
public void displayHelpDialog() {
JOptionPane.showMessageDialog(this,
"Help Information:\n" +
"- Click on a cell to enter a number.\n" +
"- Use the 'Undo' and 'Redo' buttons to undo or redo moves.\n" +
"- You can 'Redo and 'Undo' a move any number of times. \n" +
"- Use the 'Save' and 'Load' buttons to save or load games.\n" +
"- The 'Clear' button resets the current game.\n" +
"- To exit, click the 'Quit' button.\n"+
"Text Color:\n" +
"- The Greyed out numbers cannot be changed.\n" +
"- Numbers already existing in the rows and columns are represented in 'Red' colour.\n" +
"- A valid move is represented in 'Black' colour. \n" ,
"Sudoku Help", JOptionPane.INFORMATION_MESSAGE);
}
}// End of HelpClass