If a catch block handles multiple exceptions, you can separate them using a pipe (|) and in this case, exception parameter (ex) is final, so you can’t change it. The byte code generated by this feature is smaller and reduce code redundancy.
This time, as we can see, since we’ve usedrunCatching(), we don’t have anytry-catchstructure anymore. Further,if we need to handle multiple “multiCatch” groups, we can simply add more.onException{ … }blocks. Finally, let’s test if oursave4()works as expected: assertEquals(FAILED...
In Java SE 7 and later, a singlecatchblock can handle more than one type of exception. This feature can reduce code duplication and lessen the temptation to catch an overly broad exception. Consider the following example, which contains duplicate code in each of thecatchblocks: ...
一、Exception:异常,代码写错了 1、编译时异常:编译的时候要检查,并且一定要写try-catch编译才能通过 2、运行时异常,他是比较特殊的一个异常,变现为编译时正常,运行的时候出异常 RuntimeException是java.lang包底下的所有的异常当中的唯一一个运行时的异常;其中常出现的异常有: ArrayIndexOutOfBoundsException NumberFo...
[\"value1\", \"value2\", \"value3\"]}";RequestBodybody=RequestBody.create(jsonType,json);Requestrequest=newRequest.Builder().url(".post(body).build();try(Responseresponse=client.newCall(request).execute()){System.out.println(response.body().string());}catch(Exceptione){e.print...
}catch(ParseException e) {//TODO Auto-generated catch blocke.printStackTrace(); }returnnull; } } 如果是上述代码,那么在多线程环境下,你可能会收到如标题所示的错误。 解决办法 1、建议在每个方法中都new一个新的SimpleDateFormat对象,这样子就可以避免这种问题。
catch (IOException e) { e.printStackTrace(); moreQuotes = false; } } socket.close(); } The interesting change is how theDatagramPacketis constructed, in particular, theInetAddressand port used to construct theDatagramPacket. Recall that the previous example retrieved theInetAddressand port numbe...
java.lang.NumberFormatException: multiple points问题 一般这种问题主要是因为SimpleDateFormat在多线程环境下,是线程不安全的,所以如果你在多线程环境中共享了SimpleDateFormat的实例,比如你在类似日期类中定义了一个全局的SimpleDateFormat对象,这样子肯定会出现上述的报错,比如你的代码是这样的...
}catch(ParseException e) { e.printStackTrace(); } } }); thread.start();// (4)启动线程} }publicstaticvoidmain(String[] args){ test1(); } } 启动以后抛出如下异常: Exceptioninthread"Thread-5"Exceptioninthread"Thread-4"Exceptioninthread"Thread-0"java.lang.NumberFormatException: multiple points...
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