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  1. import java.awt.BorderLayout;
  2. import java.awt.FlowLayout;
  3. import java.awt.GridLayout;
  4. import java.awt.event.ActionEvent;
  5. import java.awt.event.ActionListener;
  6. import java.io.BufferedReader;
  7. import java.io.BufferedWriter;
  8. import java.io.File;
  9. import java.io.FileReader;
  10. import java.io.FileWriter;
  11. import java.io.IOException;
  12. import javax.swing.BorderFactory;
  13. import javax.swing.JButton;
  14. import javax.swing.JFrame;
  15. import javax.swing.JLabel;
  16. import javax.swing.JPanel;
  17. import javax.swing.JPasswordField;
  18. import javax.swing.JTextField;
  19. import javax.swing.SwingConstants;
  20.  
  21. /**
  22.  * @author Kai Yuen Leong
  23.  */
  24.  
  25. @SuppressWarnings("serial")
  26. public class EquipmentLoanSystem extends JFrame {
  27.  
  28. 	private JButton button;
  29. 	private JLabel label;
  30. 	private JTextField usernameField;
  31. 	private JPasswordField passwordField;
  32. 	private static BufferedReader br;
  33. 	private static BufferedWriter bw;
  34. 	private boolean user;
  35. 	private boolean access;
  36.  
  37. 	public EquipmentLoanSystem() {
  38.  
  39. 		super("Equipment Loan System");
  40. 		setDefaultCloseOperation(EXIT_ON_CLOSE);
  41. 		add(makeMainPanel());
  42. 		pack();
  43. 		setVisible(true);
  44.  
  45. 	}
  46.  
  47. 	private JPanel makeMainPanel() {
  48.  
  49. 		Listener listener = new Listener();
  50.  
  51. 		JPanel textPanel = new JPanel(new GridLayout(2, 1));
  52. 		textPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 0, 10));
  53. 		label = new JLabel("Email", SwingConstants.CENTER);
  54. 		usernameField = new JTextField(10);
  55. 		textPanel.add(label);
  56. 		textPanel.add(usernameField);		
  57.  
  58. 		label = new JLabel("Password", SwingConstants.CENTER);
  59. 		passwordField = new JPasswordField(10);
  60. 		textPanel.add(label);
  61. 		textPanel.add(passwordField);
  62.  
  63. 		JPanel buttonPanel = new JPanel(new FlowLayout());
  64. 		buttonPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
  65. 		button = new JButton("Sign In");
  66. 		button.addActionListener(listener);
  67. 		buttonPanel.add(button);
  68. 		button = new JButton("Register");
  69. 		button.addActionListener(listener);
  70. 		buttonPanel.add(button);
  71.  
  72. 		JPanel mainPanel = new JPanel(new BorderLayout());
  73. 		mainPanel.add(textPanel, BorderLayout.CENTER);
  74. 		mainPanel.add(buttonPanel, BorderLayout.SOUTH);
  75.  
  76. 		return mainPanel;
  77. 	}
  78.  
  79. 	private class Listener implements ActionListener {
  80.  
  81. 		@SuppressWarnings("deprecation")
  82. 		@Override
  83. 		public void actionPerformed(ActionEvent loginAccess) {
  84.  
  85. 			JButton button = (JButton) loginAccess.getSource();
  86.  
  87. 			if (!user) {
  88.  
  89. 				if (usernameField.getText().length() > 0) {
  90.  
  91. 					if (passwordField.getText().length() > 0) {
  92.  
  93. 						try {
  94. 							if (br.readLine() == null) {
  95.  
  96. 									bw.write(usernameField.getText());
  97. 									bw.write(" ");
  98. 									bw.write(passwordField.getText());
  99. 									bw.newLine();
  100. 									System.out.print("1");
  101. 							} 
  102.  
  103. 							else if (br.readLine() != null) {
  104.  
  105. 								boolean read = true;
  106. 								String[] userAccess = new String[2];
  107.  
  108. 								while (read == true) {
  109.  
  110. 									String line = br.readLine();
  111. 									System.out.print(line);
  112. 									userAccess = line.split(" ", -1);
  113. 									if (userAccess[1] == usernameField.getText()
  114. 											&& userAccess[2] == passwordField.getText()) {
  115.  
  116. 										access = true;
  117. 										read = false;
  118. 										System.out.print("2");
  119. 									}
  120.  
  121. 									else {read = true;}
  122.  
  123. 								}
  124. 							}
  125.  
  126. 							bw.close();
  127. 							br.close();
  128.  
  129. 						} catch (IOException e) {
  130. 							// TODO Auto-generated catch block
  131. 							e.printStackTrace();
  132. 						}
  133. 					}
  134. 				}
  135. 			}
  136. 		}
  137. 	}
  138.  
  139. 	public static void main(String[] args) throws IOException {
  140.  
  141. 		// Create new file
  142. 		String path = "C:\\Users\\kaiyu\\workspace\\Final Project - Equipment Loan System\\UserDatabase.txt";			
  143. 		File file = new File(path);
  144.  
  145. 		if (!file.exists()) {	
  146. 			file.createNewFile();
  147. 		}
  148.  
  149. 		FileWriter fw = new FileWriter(file.getAbsolutePath(), true);
  150. 		bw = new BufferedWriter(fw);
  151.  
  152. 		FileReader fr = new FileReader(file);
  153. 		br = new BufferedReader(fr);
  154.  
  155. 		new EquipmentLoanSystem();
  156. 	}
  157. }
  158.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:26: error: class EquipmentLoanSystem is public, should be declared in a file named EquipmentLoanSystem.java
public class EquipmentLoanSystem extends JFrame {
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/2sxTAF
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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