join()
讓主進程等待子進程全部執行完
例子如下：
package
mocker;
public
class
TestThread5
extends
Thread {
private
String
name
;
public
TestThread5(String
name
) {
super
(
name
);
this
.
name
=
name
;
}
@Override
public
void
run() {
System.
out
.println(Thread.currentThread().getName() +
"線程運行開始 "
);
for
(
int
i
= 0;
i
< 5;
i
++) {
System.
out
.println(
"子線程"
+
name
+
"運行： "
+
i
);
try
{
sleep((
int
) Math.random() * 10);
}
catch
(InterruptedException
e
) {
e
.printStackTrace();
}
}
System.
out
.println(Thread.currentThread().getName() +
"線程運行結束"
);
}
public
static
void
main(String[]
args
) {
System.
out
.println(Thread.currentThread().getName() +
"主線程運行開始!"
);
TestThread5
mTh1
=
new
TestThread5(
"A"
);
TestThread5
mTh2
=
new
TestThread5(
"B"
);
mTh1
.start();
mTh2
.start();
try
{
mTh1
.join();
}
catch
(InterruptedException
e
){
e
.printStackTrace();
}
try
{
mTh2
.join();
}
catch
(InterruptedException
e
){
e
.printStackTrace();
}
System.
out
.println(Thread.currentThread().getName() +
"主線程運行結束!"
);
}
}