特定の時間ごとに頻繁に更新する必要があるメソッドがあるため、Java ExecutorService をテストしていましたが、メソッドが頻繁に更新されていません。理由を教えてください。
これらは私のクラスです
FutureTask.java
package com;
import java.lang.reflect.Method;
import java.util.concurrent.*;
public class FutureTask {
private static ExecutorService executor = Executors.newCachedThreadPool();
private static FutureTask _instance = new FutureTask();
public static FutureTask getInstance() {
return _instance;
}
private static int timoutsec = 15;
public Object submiteTask(final Object obj, final Method method,
final Object[] params) throws Exception {
return submiteTask(obj, method, params, -1);
}
public Object submiteTask(final Object obj, final Method method,
final Object[] params, int timeoutSeconds) throws Exception {
if (null != obj && method != null) {
Callable<Object> task = new Callable<Object>() {
public Object call() {
try {
method.setAccessible(true);
Object resultObj = method.invoke(obj, params);
return resultObj;
} catch (Exception e) {
}
return null;
}
};
Future<Object> future = executor.submit(task);
try {
Object result = null;
if (timeoutSeconds < 0) {
result = future.get(timoutsec, TimeUnit.SECONDS);
} else {
result = future.get(timeoutSeconds, TimeUnit.SECONDS);
}
return result;
} catch (TimeoutException e) {
} catch (Exception e) {
} finally {
future.cancel(true);
}
}
return null;
}
public static void main(String args[]) {
try {
FutureTask.getInstance().submiteTask(
new TestingFutureTaskUtil(),
TestingFutureTaskUtil.class.getDeclaredMethod(
"updateMethodCalled",
new Class<?>[] { String.class }),
new Object[] { "UBSC!OC1010" }, 1);
} catch (Exception e) {
e.printStackTrace();
}
}
}
TestingFutureTaskUtil.java
package com;
public class TestingFutureTaskUtil {
public void updateMethodCalled(String symbol) {
System.out.println("updateMethodCalled" + symbol);
}
}
前もって感謝します 。