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Posted By

jugyo on 10/14/06

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Last Edited at 10/14/06 06:09pm

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SimpleTimer.java

/ Published in: Java
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シンプルなタイマー

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  1. import java.awt.*;
  2. import java.awt.event.*;
  3. import java.text.SimpleDateFormat;
  4. import java.util.*;
  5. import java.util.Timer;
  6. import javax.swing.*;
  7.  
  8. /**
  9.  * シンプルなタイマー
  10.  */
  11. public class SimpleTimer extends JWindow {
  12.  
  13. 	/**
  14. 	 * メイン関数
  15. 	 */
  16. 	public static void main(String[] args) {
  17.  
  18. 		SimpleTimer simpleTimer = new SimpleTimer();
  19. 		simpleTimer.pack();
  20. 		simpleTimer.setAlwaysOnTop(true);
  21. 		simpleTimer.setVisible(true);
  22. 	}
  23.  
  24. 	private Long startTimeMillis;
  25.  
  26. 	private JLabel label;
  27.  
  28. 	private SimpleDateFormat dateFormat;
  29.  
  30. 	private Timer timer;
  31.  
  32. 	/**
  33. 	 * コンストラクタ
  34. 	 */
  35. 	public SimpleTimer() {
  36.  
  37. 		initDateFormat();
  38. 		initConponents();
  39. 		resetTime();
  40. 		updateLabelText();
  41. 		startTimer();
  42. 	}
  43.  
  44. 	/**
  45. 	 * DateFormatの初期化
  46. 	 */
  47. 	private void initDateFormat() {
  48.  
  49. 		dateFormat = new SimpleDateFormat("HH:mm:ss");
  50. 		dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
  51. 	}
  52.  
  53. 	/**
  54. 	 * GUIコンポーネントの初期化
  55. 	 */
  56. 	private void initConponents() {
  57.  
  58. 		label = new JLabel();
  59. 		label.setFont(new Font(label.getFont().getName(), Font.BOLD, 14));
  60. 		label.setOpaque(true);
  61. 		label.setBackground(Color.black);
  62. 		label.setForeground(Color.white);
  63. 		label.setBorder(BorderFactory.createEmptyBorder(0, 2, 0, 2));
  64. 		getContentPane().add(label);
  65.  
  66. 		final JPopupMenu popup = new JPopupMenu();
  67. 		JMenuItem menuItem1 = new JMenuItem("Reset");
  68. 		menuItem1.addActionListener(new ActionListener() {
  69.  
  70. 			public void actionPerformed(ActionEvent e) {
  71.  
  72. 				resetTime();
  73. 			}
  74. 		});
  75. 		popup.add(menuItem1);
  76. 		JMenuItem menuItem2 = new JMenuItem("Exit");
  77. 		menuItem2.addActionListener(new ActionListener() {
  78.  
  79. 			public void actionPerformed(ActionEvent e) {
  80.  
  81. 				System.exit(0);
  82. 			}
  83. 		});
  84. 		popup.add(menuItem2);
  85. 		label.setComponentPopupMenu(popup);
  86.  
  87. 		label.addMouseListener(new MouseAdapter() {
  88.  
  89. 			@Override
  90. 			public void mouseClicked(MouseEvent e) {
  91.  
  92. 				if (e.getButton() == MouseEvent.BUTTON2
  93. 						&& e.getClickCount() == 1) {
  94. 					popup.setVisible(true);
  95. 				}
  96. 			}
  97. 		});
  98. 	}
  99.  
  100. 	/**
  101. 	 * リセット
  102. 	 */
  103. 	private void resetTime() {
  104.  
  105. 		startTimeMillis = Calendar.getInstance().getTimeInMillis();
  106. 	}
  107.  
  108. 	/**
  109. 	 * ラベル更新
  110. 	 */
  111. 	private void updateLabelText() {
  112.  
  113. 		SwingUtilities.invokeLater(new Runnable() {
  114.  
  115. 			public void run() {
  116.  
  117. 				long elapsedTime = Calendar.getInstance().getTimeInMillis()
  118. 						- startTimeMillis;
  119.  
  120. 				Date date = new Date(elapsedTime);
  121.  
  122. 				label.setText(dateFormat.format(date));
  123. 			}
  124. 		});
  125. 	}
  126.  
  127. 	/**
  128. 	 * タイマー開始
  129. 	 */
  130. 	private void startTimer() {
  131.  
  132. 		timer = new Timer();
  133. 		timer.schedule(new TimerTask() {
  134.  
  135. 			@Override
  136. 			public void run() {
  137.  
  138. 				updateLabelText();
  139.  
  140. 			}
  141. 		}, 0, 1000);
  142. 	}
  143. }

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