向线程中传递数据的三种方法：
一、通过构造函数传递参数
public
class
MyThread1
extends
Thread
{
private
String name;
public
MyThread1(String name)
{
this
.name = name;
}
public
void
run()
{
System.out.println(
"hello "
+ name);
}
public
static
void
main(String[] args)
{
Thread thread =
new
MyThread1(
"world"
);
thread.start();
}
}
二、通过变量和方法传递数据
public
class
MyThread2
implements
Runnable
{
private
String name;
public
void
setName(String name)
{
this
.name = name;
}
public
void
run()
{
System.out.println(
"hello "
+ name);
}
public
static
void
main(String[] args)
{
MyThread2 myThread =
new
MyThread2();
myThread.setName(
"world"
);
Thread thread =
new
Thread(myThread);
thread.start();
}
}
三、通过回调函数传递数据
class
Data
{
public
int
value =
0
;
}
class
Work
{
public
void
process(Data data, Integer numbers)
{
for
(
int
n : numbers)
{
data.value += n;
}
}
}
public
class
MyThread3
extends
Thread
{
private
Work work;
public
MyThread3(Work work)
{
this
.work = work;
}
public
void
run()
{
java.util.Random random =
new
java.util.Random();
Data data =
new
Data();
int
n1 = random.nextInt(
1000
);
int
n2 = random.nextInt(
2000
);
int
n3 = random.nextInt(
3000
);
work.process(data, n1, n2, n3);
// 使用回调函数
System.out.println(String.valueOf(n1) +
"+"
+ String.valueOf(n2) +
"+"
+ String.valueOf(n3) +
"="
+ data.value);
}
public
static
void
main(String[] args)
{
Thread thread =
new
MyThread3(
new
Work());
thread.start();
}
}