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-rw-r--r--java/gjt/Stopwatch.java94
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diff --git a/java/gjt/Stopwatch.java b/java/gjt/Stopwatch.java
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-package gjt;
-
-import java.awt.*;
-
-/**
- * A Thread that acts as a stopwatch.<p>
- *
- * Stopwatch starts running when it is constructed, and may be
- * reset by the reset() method. getHour(), getMinute(),
- * getSecond(), and getMillisecond() are used to get the
- * elapsed time since construction, or since the last reset.<p>
- *
- * toString() returns the elapsed time in the form of
- * HH:MM:SS:mm, where HH == hours, MM == minutes, SS == seconds
- * and mm == milliseconds.<p>
- *
- * Each Stopwatch may have a StopwatchClient associated with it.
- * If the StopwatchClient is non-null, the StopwatchClients'
- * tick() method is invoked every 50 milliseconds.<p>
- *
- * @version 1.0, Apr 21 1996
- * @author David Geary
- * @see StopwatchClient
- * @see gjt.animation.Sequence
- * @see gjt.animation.Sprite
- */
-public class Stopwatch extends Thread {
- private StopwatchClient client;
- private long start, now, elapsed;
- private long hour, minute, second, millisecond;
-
- public Stopwatch() {
- this(null);
- }
- public Stopwatch(StopwatchClient client) {
- start = System.currentTimeMillis();
- this.client = client;
- }
- public void update() {
- now = System.currentTimeMillis();
- elapsed = now - start;
- hour = minute = second = millisecond = 0;
-
- second = elapsed / 1000;
- millisecond = elapsed % 1000;
- millisecond = (millisecond == 0) ? 0 : millisecond/10;
-
- if(second > 59) {
- minute = second / 60;
- second = second - (minute*60);
- }
- if(minute > 59) {
- hour = minute / 60;
- minute = minute - (hour*60);
- }
- }
- public String toString() {
- update();
- return new String(stringValueOf(hour) + ":" +
- stringValueOf(minute) + ":" +
- stringValueOf(second) + ":" +
- stringValueOf(millisecond));
- }
- public long getHour () { return hour; }
- public long getMinute () { return minute; }
- public long getSecond () { return second; }
- public long getMillisecond () { return millisecond; }
-
- public long elapsedTime() {
- update();
- return elapsed;
- }
- public void reset() {
- start = System.currentTimeMillis();
- }
- public void run() {
- while(true) {
- try {
- Thread.currentThread().sleep(50, 0);
- update();
- if(client != null)
- client.tick();
- }
- catch(InterruptedException e) {
- Assert.notFalse(false);
- }
- }
- }
- private String stringValueOf(long l) {
- if(l < 10) return "0" + String.valueOf(l);
- else return String.valueOf(l);
-
- }
-}