本文實(shí)例講述了java實(shí)現(xiàn)的計(jì)時(shí)器【秒表】功能。分享給大家供大家參考，具體如下：
應(yīng)用名稱：java計(jì)時(shí)器
用到的知識(shí)：java gui編程
開發(fā)環(huán)境：win8+eclipse+jdk1.8
功能說明：計(jì)時(shí)功能，精確到1毫秒，可暫停。
效果圖：
源代碼：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
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;/** * 計(jì)時(shí)器 */public class timer extends jframe { /** * */ private static final long serialversionuid = 1l; private static final string initial_label_text = "00:00:00 000"; // 計(jì)數(shù)線程 private countingthread thread = new countingthread(); // 記錄程序開始時(shí)間 private long programstart = system.currenttimemillis(); // 程序一開始就是暫停的 private long pausestart = programstart; // 程序暫停的總時(shí)間 private long pausecount = 0; private jlabel label = new jlabel(initial_label_text); private jbutton startpausebutton = new jbutton("開始"); private jbutton resetbutton = new jbutton("清零"); private actionlistener startpausebuttonlistener = new actionlistener() { public void actionperformed(actionevent e) { if (thread.stopped) { pausecount += (system.currenttimemillis() - pausestart); thread.stopped = false; startpausebutton.settext("暫停"); } else { pausestart = system.currenttimemillis(); thread.stopped = true; startpausebutton.settext("繼續(xù)"); } } }; private actionlistener resetbuttonlistener = new actionlistener() { public void actionperformed(actionevent e) { pausestart = programstart; pausecount = 0; thread.stopped = true; label.settext(initial_label_text); startpausebutton.settext("開始"); } }; public timer(string title) throws headlessexception { super(title); setdefaultcloseoperation(exit_on_close); setlocation(300, 300); setresizable(false); setupborder(); setuplabel(); setupbuttonspanel(); startpausebutton.addactionlistener(startpausebuttonlistener); resetbutton.addactionlistener(resetbuttonlistener); thread.start(); // 計(jì)數(shù)線程一直就運(yùn)行著 } // 為窗體面板添加邊框 private void setupborder() { jpanel contentpane = new jpanel(new borderlayout()); contentpane.setborder(borderfactory.createemptyborder(5, 5, 5, 5)); this.setcontentpane(contentpane); } // 配置按鈕 private void setupbuttonspanel() { jpanel panel = new jpanel(new flowlayout()); panel.add(startpausebutton); panel.add(resetbutton); add(panel, borderlayout.south); } // 配置標(biāo)簽 private void setuplabel() { label.sethorizontalalignment(swingconstants.center); label.setfont(new font(label.getfont().getname(), label.getfont().getstyle(), 40)); this.add(label, borderlayout.center); } // 程序入口 public static void main(string[] args) { try { uimanager.setlookandfeel(uimanager.getsystemlookandfeelclassname()); } catch (exception e) { e.printstacktrace(); } timer frame = new timer("www.ythuaji.com.cn 計(jì)時(shí)器"); frame.pack(); frame.setvisible(true); } 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() - programstart - pausecount; label.settext(format(elapsed)); } try { sleep(1); // 1毫秒更新一次顯示 } catch (interruptedexception e) { e.printstacktrace(); system.exit(1); } } } // 將毫秒數(shù)格式化 private string format(long elapsed) { int hour, minute, second, milli; milli = (int) (elapsed % 1000); elapsed = elapsed / 1000; second = (int) (elapsed % 60); elapsed = elapsed / 60; minute = (int) (elapsed % 60); elapsed = elapsed / 60; hour = (int) (elapsed % 60); return string.format("%02d:%02d:%02d %03d", hour, minute, second, milli); } }} |
ps：這里再為大家推薦幾款時(shí)間及日期相關(guān)工具供大家參考使用：
unix時(shí)間戳(timestamp)轉(zhuǎn)換工具：https://tool.zzvips.com/t/timestamp/
在線秒表計(jì)時(shí)器：https://tool.zzvips.com/t/miaobiao/
希望本文所述對(duì)大家java程序設(shè)計(jì)有所幫助。
原文鏈接：https://blog.csdn.net/C_jian/article/details/50506759
