Add timeyzm

timeyzm

@@ -0,0 +1,146 @@
+package wuziqiyem;
+
+import javax.swing.*;
+import java.awt.HeadlessException;
+import java.awt.BorderLayout;
+import java.awt.FlowLayout;
+import java.awt.Font;
+import java.awt.event.ActionListener;
+import java.awt.event.ActionEvent;
+
+/**
+ * 计时器
+ */
+public class timeyzm extends JPanel {
+    private static final long serialVersionUID = 1L;
+
+    private static final String INITIAL_LABEL_TEXT = "00:00";
+
+    // 计数线程
+    private CountingThread thread = new CountingThread();
+
+    // 记录程序开始时间
+    private long programStartyzm = System.currentTimeMillis();
+
+    // 程序一开始就是暂停的
+    private long pauseStartyzm = programStartyzm;
+
+    // 程序暂停的总时间
+    private long pauseCountyzm = 0;
+
+    private JLabel label = new JLabel(INITIAL_LABEL_TEXT);
+
+    private JButton startyzm = new JButton("开始");
+
+    private JButton resetyzm = new JButton("清零");
+
+    private JButton stopyzm = new JButton("暂停");
+
+    private ActionListener startyzmListener = new ActionListener() {
+        public void actionPerformed(ActionEvent e) {
+            thread.stopped = false;
+            programStartyzm = System.currentTimeMillis();
+            pauseStartyzm = programStartyzm;
+            pauseCountyzm = 0;
+            startyzm.setText("开始");
+        }};
+
+    private ActionListener stopyzmListener = new ActionListener() {
+        public void actionPerformed(ActionEvent e) {
+            if (thread.stopped) {
+                pauseCountyzm += (System.currentTimeMillis() - pauseStartyzm);
+                thread.stopped = false;
+                stopyzm.setText("暂停");
+            } else {
+                pauseStartyzm = System.currentTimeMillis();
+                thread.stopped = true;
+                stopyzm.setText("继续");
+            }
+        }};
+
+    private ActionListener resetyzmListener = new ActionListener() {
+        public void actionPerformed(ActionEvent e) {
+            thread.stopped = true;
+            pauseStartyzm = programStartyzm;
+            pauseCountyzm = 0;
+            label.setText(INITIAL_LABEL_TEXT);
+            resetyzm.setText("清零");
+        }
+    };
+
+    public timeyzm(String title) {
+        super();
+        setLayout(new BorderLayout());
+
+        setupBorder();
+        setupLabel();
+        setupButtonsPanel();
+
+        startyzm.addActionListener(startyzmListener);
+        stopyzm.addActionListener(stopyzmListener);
+        resetyzm.addActionListener(resetyzmListener);
+        thread.start(); // 计数线程一直就运行着
+    }
+
+    // 为窗体面板添加边框
+    private void setupBorder() {
+        setBorder(BorderFactory.createEmptyBorder(250,50,250,50));
+    }
+
+    // 配置按钮
+    private void setupButtonsPanel() {
+        JPanel buttonpanelyzm= new JPanel(new FlowLayout());
+        buttonpanelyzm.add(startyzm);
+        buttonpanelyzm.add(stopyzm);
+        buttonpanelyzm.add(resetyzm);
+        add(buttonpanelyzm, BorderLayout.SOUTH);
+    }
+
+    // 配置标签
+    private void setupLabel() {
+        label.setHorizontalAlignment(SwingConstants.CENTER);
+        label.setFont(new Font(label.getFont().getName(), label.getFont().getStyle(), 40));
+        this.add(label, BorderLayout.CENTER);
+    }
+
+    private class CountingThread extends Thread {
+
+        public boolean stopped = true;
+
+        private CountingThread() {
+            setDaemon(true);
+        }
+
+        @Override
+        public void run() {
+            while (true) {
+                if (!stopped) {
+                    long elapsed = System.currentTimeMillis() - programStartyzm - pauseCountyzm;
+                    label.setText(format(elapsed));
+                }
+                try {
+                    sleep(1);  // 1毫秒更新一次显示
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                    System.exit(1);
+                }
+            }
+        }
+
+        // 将毫秒数格式化
+        private String format(long elapsed) {
+            int minute, second;
+            elapsed = elapsed / 1000;
+
+            second = (int) (elapsed % 60);
+            elapsed = elapsed / 60;
+
+            minute = (int) (elapsed % 60);
+
+            return String.format("%02d:%02d", minute, second);
+        }
+    }
+
+
+}
+