多线程设计模式 -- futrue --新特性
2009-09-17 00:00:00 来源:WEB开发网请求数据线程
Java代码
public class RequestData implements Callable<Data> {
@Override
public Data call() {
// TODO Auto-generated method stub
int[] arr = new int[100];
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for (int i = 0; i < 100; i++) {
arr[i] = i;
}
Data data = new Data();
data.setDataArr(arr);
return data;
}
}
数据
Java代码
public class Data {
private int[] dataArr = new int[100];
public int[] getDataArr() {
return dataArr;
}
public void setDataArr(int[] dataArr) {
this.dataArr = dataArr;
}
}
测试类
Java代码
public class Main {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
ExecutorService es = Executors.newFixedThreadPool(4);
RequestData r1 = new RequestData();
RequestData r2 = new RequestData();
RequestData r3 = new RequestData();
RequestData r4 = new RequestData();
System.out.println("Begin......");
Future f1 = es.submit(r1);
Future f2 = es.submit(r2);
Future f3 = es.submit(r3);
Future f4 = es.submit(r4);
Data data1 = null;
Data data2 = null;
Data data3 = null;
Data data4 = null;
try {
data1 = f1.get();
data2 = f2.get();
data3 = f3.get();
data4 = f4.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(data1.getDataArr().length);
System.out.println(data2.getDataArr().length);
System.out.println(data3.getDataArr().length);
System.out.println(data4.getDataArr().length);
System.out.println("End......");
es.shutdown();
}
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