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Thread: Need help with checking passwords

  1. #1
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    Default Need help with checking passwords

    I made a program that checks a password that you enter. This is different than most because i want to enter it using buttons. If you get it right the program display "Correct" if you get it wrong it displays "Incorrect". The problem is when i run the program it always say the password is incorrect. Please help me fix this problem. You can find the problem in the enterListener new the bottom.
    Thanks.



            //============================================EnterListener
    		class EnterListener implements ActionListener {
    		public void actionPerformed(ActionEvent evt) {
    		Object  source = (JButton)evt.getSource();
     
    // The password is 8897		
    // Here is the problem
     
                   if (source.equals(buttonOrder)) {
    			_displayField.setText("Correct");
     
    		} else { 
    			_displayField.setText("Incorrect, try again");
    			}
     
     
    		}
     
     
     
    		}


    Here is the full program.

    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import javax.swing.event.*;
     
    class Password2 extends JFrame {
    //===========================================
    private static final Font BIGGER_FONT = new Font("monspaced", Font.PLAIN, 20);
     
    //===================================================
    private JTextField _displayField;
     
    private boolean _startNumber = true;
    private boolean code = true;
     
    //================================================
      public static void main(String[] args) {
     
            try {
                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            } catch (Exception unused) {
                ; 
            }
     
     
            Password2 window = new Password2();
            window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            window.setVisible(true);
      }
     
     
    //===========================================================
     
    public Password2() {
    _displayField = new JTextField("Enter Password", 12);
    _displayField.setHorizontalAlignment(JTextField.RIGHT);
    _displayField.setFont(BIGGER_FONT);
    ActionListener enterListener = new EnterListener();
    JButton clearButton = new JButton("Clear");
            clearButton.setFont(BIGGER_FONT);
            clearButton.addActionListener(new ClearListener());
    JButton enterButton = new JButton("Enter");
     	enterButton.setFont(BIGGER_FONT);
            enterButton.addActionListener(enterListener);
            ActionListener numListener = new NumListener();
    String buttonOrder = "123456789 0 ";
    JPanel buttonPanel = new buttonPanel();
    buttonPanel.setLayout(new GridLayout(5, 3, 2, 2));
    for (int i = 0; i <buttonOrder.length(); i++) {
    	String keyTop = buttonOrder.substring(i, i+1);
    	JButton b = new JButton(keyTop);
    	if (keyTop.equals(" ")) {
    		b.setEnabled(false);
    	} else {
    		b.addActionListener(numListener);
    		b.setFont(BIGGER_FONT);
    	}
    	buttonPanel.add(b);
    }
     
    JPanel clearPanel = new clearPanel();
    clearPanel.setLayout(new FlowLayout());
    clearPanel.add(clearButton);
    clearPanel.add(enterButton);
     
    JPanel content = new JPanel();
    content.setLayout(new BorderLayout(5, 5));
    content.add(_displayField,	BorderLayout.NORTH );
    content.add(buttonPanel	, BorderLayout.CENTER);
    content.add(clearPanel	,BorderLayout.SOUTH );
     
    content.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
     
     
      this.setContentPane(content);
            this.pack();
            this.setTitle("Password");
            this.setResizable(false);
            this.setLocationRelativeTo(null);	
     
    }
    	//================================================
    	class buttonPanel extends JPanel {
    	public void paintComponent(Graphics comp) {
    		super.paintComponent(comp);
    		Graphics2D comp2D = (Graphics2D)comp;
    		comp2D.setColor(Color.green);
    		setBackground(Color.black);
    		int width = getSize().width;
    		int height = getSize().height;
    			Font currentFont = new Font("Serif" , Font.BOLD+Font.ITALIC, 36);
    			comp2D.setFont(currentFont);
    			comp2D.drawString("Password", width - 200, height - 5);
     
     
    	}	
     
     
    	}
    	//==========================================================
    	class clearPanel extends JPanel {
    	public void paintComponent(Graphics comp) {
    		super.paintComponent(comp);
    		Graphics2D comp2D = (Graphics2D)comp;
    		comp2D.setColor(Color.red);
    		setBackground(Color.blue);
     
    	}
    	}
     
    	//=========================================================
       private void actionClear() {
            _startNumber = true;         
            _displayField.setText("0");
       }
    	    //////////////////////////////////// inner listener class NumListener
     
    	    class NumListener implements ActionListener {
            public void actionPerformed(ActionEvent e) {
                String digit = e.getActionCommand(); 
                if (_startNumber) {
                    _displayField.setText(digit);
                    _startNumber = false;
                } else {
                    _displayField.setText(_displayField.getText() + digit);
                }
            }
        }
     
     
            //============================================EnterListener
    		class EnterListener implements ActionListener {
    		public void actionPerformed(ActionEvent evt) {
    		Object  source = (JButton)evt.getSource();
     
    // The password is 8897		
    // Here is the problem
     
                   if (source.equals(buttonOrder)) {
    			_displayField.setText("Correct");
     
    		} else { 
    			_displayField.setText("Incorrect, try again");
    			}
     
     
    		}
     
     
     
    		}
     
     
    //////////////////////////////////// inner listener class ClearListener
        class ClearListener implements ActionListener {
            public void actionPerformed(ActionEvent e) {
                actionClear();
            }
        }
    }
    Last edited by kb1213; April 11th, 2011 at 09:17 PM.


  2. #2
    Administrator copeg's Avatar
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    Default Re: Need help with checking passwords

    == != equals()....see http://www.javaprogrammingforums.com...html#post18725

    Edit: Please don't post the same question twice to the forums. I've removed your other post and moved this to the appropriate forum
    Last edited by copeg; April 1st, 2011 at 05:01 PM.

  3. #3
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    Default Re: Need help with checking passwords

    Thanks. But it still doesn't work.

  4. #4
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    Default Re: Need help with checking passwords

    Object  source = (JButton)evt.getSource();
    if (source.equals("8897")) {
    You are comparing the button that caused the event to the String. Obviously this will never be true.

  5. #5
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    Default Re: Need help with checking passwords

    Convert your object value into string and try comparing with that. I agree with Junky's answer as well.

  6. #6
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    Default Re: Need help with checking passwords

    I'm not sure I know what your saying. I figured out that the buttons that I put in have no purpose because I have the String buttonOrder. What I don't know is how to get a source from the string. String buttonOrder is a string of numbers that are used to label the buttons on this grid layout.

  7. #7
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    Default Re: Need help with checking passwords

    As I said you are comparing the button with the String. Perhaps you should get the String that is displayed on the button and compare that instead.

  8. #8
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    Default Re: Need help with checking passwords

    When I get the String from the button, it says that it cannot find the symbol. Please help me with this. I don't know what else to do.

  9. #9
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    Default Re: Need help with checking passwords

    We don't read minds. Post your code. If it is too long then create a SSCCE.

  10. #10
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    Default Re: Need help with checking passwords

    Oh and the exact error message

  11. #11
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    Default Re: Need help with checking passwords

    I already posted the whole code and here is the error message. It should be pointing to buttonOrder but I couldn't figure out to format it.



    Password2.java:129: cannot find symbol
    symbol : variable buttonOrder
    location: class Password2.EnterListener
    if (source.equals(buttonOrder)) {
    ^
    1 error
    Process javac exited with code 1

  12. #12
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    Default Re: Need help with checking passwords

    Never mind. Thank you everyone. I finally figured out the problem.

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