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java-learning
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master
Breadcrumbs
java-learning
/
java-multithread
/
src
/
main
/
java
/
com
/
brianway
/
learning
/
java
/
multithread
/
timer
/
example3
/
Run3_cancel3.java
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47 lines (41 loc) · 1.1 KB
master
Breadcrumbs
java-learning
/
java-multithread
/
src
/
main
/
java
/
com
/
brianway
/
learning
/
java
/
multithread
/
timer
/
example3
/
Run3_cancel3.java
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47 lines (41 loc) · 1.1 KB
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package
com
.
brianway
.
learning
.
java
.
multithread
.
timer
.
example3
;
import
java
.
util
.
Calendar
;
import
java
.
util
.
Date
;
import
java
.
util
.
Timer
;
/**
* Created by Brian on 2016/4/15.
*/
/**
* P252
* Timer类的cancel()方法
* 有时不一定会停止计划任务,(见源码,queue锁)
*/
public
class
Run3_cancel3
{
public
static
void
main
(
String
[]
args
)
throws
InterruptedException
{
int
i
=
0
;
Calendar
calendar
=
Calendar
.
getInstance
();
Date
runDate
=
calendar
.
getTime
();
while
(
true
) {
i
++;
Timer
timer
=
new
Timer
();
MyTask
task
=
new
MyTask
(
i
);
timer
.
schedule
(
task
,
runDate
);
timer
.
cancel
();
}
}
}
/*
输出:
第1次没有被cancel取消
第44674次没有被cancel取消
第44676次没有被cancel取消
第44678次没有被cancel取消
第44682次没有被cancel取消
第44684次没有被cancel取消
第44686次没有被cancel取消
第44688次没有被cancel取消
第44697次没有被cancel取消
第44702次没有被cancel取消
第44706次没有被cancel取消
第67967次没有被cancel取消
*/
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