捕捉上层社会的异常是我想知道的。我有多个方法调用层。在最深一层,抛出异常。在顶层,我怎么才能抓住它?
void foo() {
bar(); <---- catch exception in here
}
void bar() {
// .... <--- throws IOException or ExecutionException or InterruptedException
}
OR case two
void foo() {
bar(); <---- catch exception in here
}
void bar() {
g
请看下面的类,建议使用哪一个,以及它们有什么不同?
// Approach 1
public class Test extends Controller {
private final DatabaseExecutionContext executionContext;
@Inject
public Test(DatabaseExecutionContext executionContext) {
this.executionContext = executionContext;
}
public CompletableFuture&
所以,基本上,我有这样的代码,其中重复发生:
for (int i = 0; i < dataFromApi.size(); i++){
try {
returnedPoolData = dataFromApi.get(i).get();
if(returnedPoolData == null || returnedPoolData.getJsonString().isEmpty())
this.processAndStoreData(returnedPoolData, i, called
我在Nifi中导入了一个新的OPCUA包。Here 这个处理器在一天多的时间里都读得很好,但后来我得到了这个错误: 2019-06-04 15:09:17,727 ERROR [Timer-Driven Process Thread-7] d.f.fit.processors.opcua.GetOPCData GetOPCData[id=1e5f35cf-3df7-1e7d-1521-5c8fe9fbd8f6] Failed to process session due to org.apache.nifi.processor.exception.ProcessException: java
有关意图的详细信息,请参见维基百科-多吨模式。
这是一堂课:
/**
* Holds a thread-safe map of unique create-once items.
*
* Contract:
*
* Only one object will be made for each key presented.
*
* Thread safe.
*
* @param <K>
* @param <V>
*/
public class Multiton<K, V> {
// Map from the key to the
当我打电话给交易时,我得到了这个:
datomic.impl.Exceptions$IllegalArgumentExceptionInfo: :db.error/not-a-data-function Not a data function: 71 data: {:db/error :db.error/not-a-data-function} java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: :db.error/not-a-data-function No
import java.math.BigInteger;
import java.util.concurrent.*;
public class MultiThreadedFib {
private ExecutorService executorService;
public MultiThreadedFib(final int numberOfThreads) {
executorService = Executors.newFixedThreadPool(numberOfThreads);
}
public BigInteger getFibNumberAtIndex(fin