|
p****t
发帖数: 4256 | 2 Except China...
其实老米用意很明显了，China支持谁，咱就得反对谁
前一阵子不还曝光中国马总统邀请某人免费游台湾，用以指责对方立场不坚定，跟
China 搞不清爽 |
|
w*********g
发帖数: 10097 | 3 Mar 16, 2012 9:00 AM Delivery exception BRONX, NY
Future delivery requested
Mar 16, 2012 7:41 AM On FedEx vehicle for delivery BRONX, NY
Mar 16, 2012 7:32 AM At local FedEx facility
BRONX, NY
我发布那天下午刷屏订的，就是为了早点拿到，怎么这一大早要deliver了又不让投递
了？apple你妈搞屁啊，我的也是没刻字的版本，没有任何通知说要delay啊，kao |
|
b****z
发帖数: 4485 | 4 Mar 16, 2012 10:38 AM
Delivery exception
Estimated delivery
Mar 16, 2012 by 8:00 PM |
|
R********r
发帖数: 3415 | 5 公司的机子，我想remote desktop, 但是Windows Firewall里remote desktop
exception里是灰色的，根本选不上
有没有什么办法？ |
|
a****a
发帖数: 21 | 6 anyone can help me to look at this problem? I use oracle 10g,
java.sql.SQLException: Io exception: The Network Adapter could not establish
the connection
oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:162)
oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:274)
oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:319)
oracle.jdbc.driver.PhysicalConnection.(PhysicalConne |
|
E***e
发帖数: 3430 | 7 Exception是这里扔出来的
//frame.cpp
static void __RethrowException(EHExceptionRecord *pThisException)
{
RaiseException( pThisException->ExceptionCode,
pThisException->ExceptionFlags,
pThisException->NumberParameters,
(PULONG_PTR)&(pThisException->params) );
}
然后仔细看发现我整个屏幕都不对了
边缘有各种不明条块在闪
看来是没法用做显示的GPU跑计算的 |
|
j******n
发帖数: 1 | 8 looks like a prob bw weblogic and XP. reason could be the native JMS
implementation in weblogic doesn't work in XP (typical runtime errors in
MS-"EXCEPTION_ACCESS_VIOLATION"). based on your simple code snippets, you may
have nothing to do but ask weblogic, see similiar prob occurs before or they
have a patch.
exception:
at
at
weblogic.jms.dispatcher.DispatcherImpl.dispatchAsync(DispatcherImpl.java:149)
weblogic.jms.dispatcher.DispatcherImpl.dispatchOneWay(DispatcherImpl.java:429)
at
weblogic.rm |
|
p***p
发帖数: 559 | 9 以前都是晕着来的，没什么特别注意，反正是用别人的API，提醒我要CATCH就好了。最近
开始写自己的API，一下子晕菜了，现在总结一下
1 如果一个工作中间不能出任何问题，就可以从头到尾全部筐起来，出错就直接到最后
catch。比如打开数据库连接，准备数据，写入数据，前后一个都不能出问题。
2 如果中间某个步骤出问题，但是程序还可以继续前进，就单独筐那个步骤。比如监视写
入的数据，显示时候出问题，但是不影响整体存储工作。
3 如果出问题一定要强制API使用者知道，比如存个数据到数据库失败了，就在method定
义里面写出throws某个错误。方法内部可以不catch或者catch之后重新生产个exception
。
4 如果出了问题想就地隐瞒，就干脆catch了算了，比如关闭数据库连接等等不重要的错
误。
各位批改一下 |
|
m******t
发帖数: 2416 | 10 My 2 cents below.
近
That's right, in general. I would be careful though not to blindly catch
Exception. I would make sure whatever caught in each catch block is meant to
be handled that way. Also don't forget to add the finally block in case you
have any resource releasing to do.
写
Sure.
定
216.58.13.166
128.143.181.42
66.254.232.134
35.9.66.33
10.145.226.221
13.139.221.191
131.94.119.109
65.241.182.51
12.4.195.228
65.87.188.198
209.158.27.72
129.252.11.168
128.235.248.219
71.195.204.103
128.97 |
|
p***p
发帖数: 559 | 11 设计这个真是比较头疼的事情，工作量和设计API本身差不多，回头使用者又稀里糊涂全
Catch了
打算完成之后，把所有的throws全部拿掉看看还有哪些exception，一个一个的重新理清
楚逻辑关系
而且自己归类例外的种类也挺烦，哪些算参数例外，哪些算状态例外 |
|
c*****t
发帖数: 1879 | 12 你没看懂 code 。
些
出
exception |
|
xt
发帖数: 17532 | 13 在某些情况下还是可以的，比如在finally-block里面关闭java.sql.Connection或者
ResultSet.通常情况下最好不要蔫不溜地把错误藏起来,不瞒你说我非常痛恨这种style.
我痛恨的另外一种style是随随便便地往外扔java.lang.Exception,除非是个很随便的
小程序可以原谅. |
|
p***p
发帖数: 559 | 14 设计这个真是比较头疼的事情，工作量和设计API本身差不多，回头使用者又稀里糊涂全
Catch了
打算完成之后，把所有的throws全部拿掉看看还有哪些exception，一个一个的重新理清
楚逻辑关系
而且自己归类例外的种类也挺烦，哪些算参数例外，哪些算状态例外 |
|
c*****t
发帖数: 1879 | 15 你没看懂 code 。
些
出
exception |
|
c*****t
发帖数: 1879 | 16 Forgot to add, Step1Exception and ConversionException are child classes
of MyLibException. I didn't mention it because in the earlier post I
mentioned that all exceptions generated in the library code must be
child classes of MyLibException. |
|
g****y
发帖数: 15 | 17 www.javaworld.com上有几篇关于exception的文章，写得不错，可以参考一下。 |
|
c*****t
发帖数: 1879 | 18 你没看懂 code 。
些
出
exception |
|
r****c
发帖数: 2585 | 19 I just have a piece of code as follows
public void methodA()
{
methodB(paramA, new Class() throws AException {
Noname class
}
}
According to common jave exception practice, should I also modify methodA to
throws AException? |
|
g*****g
发帖数: 34805 | 20 Usually you don't extend RuntimException unless you want to
halt the system when the exception is throwed. |
|
g*s
发帖数: 2277 | 21 initCause(Throwable cause)
exception |
|
l*****b
发帖数: 82 | 22 When I start Jboss 4.0.4, it keep throwing UDP exceptions. However, it never
happened before. Do you know what is root cause? There is also some issue
about the naming server port: 1099. When I use program to check the port
1099, it always return true even the JBoss is not up yet. I am not sure they
are relative.
2008-12-10 10:27:57,311 WARN [org.jgroups.protocols.UDP] packet from /193.32
.21.76:32793 has different version (") from ours (0227). This may cause
problems
2008-12-10 10:27:57,311 |
|
c******n
发帖数: 4965 | 23 like
@Path("/helloworld")
public class HelloWorld {
//////////// below is the problem
public HelloWorld() throws Exception {
}
@Get
public String sayHello() {
return "hello";
}
} |
|
a*****p
发帖数: 1285 | 24 问个exception的问题
我有个java.lang.NullPointerException，然后throwalbe变量是e，我想在textarea里
面打出e的所有信息。我用e.getName()能把名字显示出来，为啥e.getMessage()显示是
null？
后面具体的信息，at line**，这些怎么显示出来么？不是getMessage()又是什么呢？
网上也查了，试过e.getCause().getMessage()也不行。这个是哪里有问题了？
java.lang.NullPointerException
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.
java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:1... 阅读全帖 |
|
g*****g
发帖数: 34805 | 25 StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw));
String exceptionAsStrting = sw.toString();
or org.apache.commons.lang.exception.ExceptionUtils.getStackTrace(Throwable)
196) |
|
y***d
发帖数: 2330 | 26 The jdbc/hibernate templates seem to be fine.
I went across some buggy spring components that failed to declare the
exceptions in the function signature, and gave me some surprises.
Now I think it is more of an immature implemtation problem. |
|
t*******e
发帖数: 684 | 27 Very useful information. There are merely 2 exceptions developers should
catch in programming Spring-based persistence,
OptimisticLockingFailureException & PessimisticLockingFailureException(
DeadlockLoserDataAccessException).
problems, |
|
b***i
发帖数: 3043 | 28 finally got it.
Put the exception on google, found a german forum. Used google translate to
English, found the explanation is that I modified the UI outside EDT. So
use invokeAndWait to solve the problem.
, |
|
b***i
发帖数: 3043 | 29 我在main里面调用一个自己写的类OldSplashScreen的函数，起了一个线程，执行
splash()(其中145行splashWindow = new SplashWindow(this,fImage);)
178在一个private class SplashWindow extends JFrame的类中，是构造函数
private class SplashWindow extends JFrame {
BufferedImage base=null;
public Graphics2D gS=null;
private static final long serialVersionUID = 1L;
BufferedImage bf=null;
BufferedImage canvas=null;
178： SplashWindow(Frame aParent, Image aImage) {
构造函数怎么会出错？我估计是非Swing EDT里面调用Swing类Frame子类的构造函数了。
... 阅读全帖 |
|
b***i
发帖数: 3043 | 30 下面main代码如果comment，则程序正常。否则每10次有大概一次出问题。咋回事？
theFrame=new JFrame();
theFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
theFrame.setLayout(new BorderLayout()); // original border layout
textpane = new JTextArea(20,40);
textpane.setSize(300,300);
textpane.setText("Please wait for the main to load");
JScrollPane js=new JScrollPane(textpane);
theFrame.add(js, BorderLayout.PAGE_START);
theFrame.pack();
theFrame.setVisible(true);
其他地方，只有这里需要theFr... 阅读全帖 |
|
b***i
发帖数: 3043 | 31 我加入了connection pool在standalone.xml里面， driver后面。
mysql
10
20
true
Push之后好用，但是重启后仍然Exception。过一段时间就好了，比如几个小时。
不知道下面这个加在哪里？网上说可以检查连接什么的。有用吗？
select 1 |
|
z*********e
发帖数: 10149 | 32 在另外一个debian的机器上也试了下,jdk 1.7.0_75，直接javac，也是说有unhandled
exception |
|
y*h
发帖数: 25423 | 33 最近老是死机，出现类似下面这类kernel panic错误：
CPU 2: Machine Check Exception: 4 Bank 0: f603200000000833
TSC 1b99bb7175d ADDR 391fd080
Kernel panic - not syncing: Machine check.
一般是什么问题？ |
|
j**********p
发帖数: 22 | 34 Probably it should have said this, exceptions are typically generated by
instructions, while interrupts are irrelevant to instructions, which could
be after or in between instructions. |
|
yy
发帖数: 45 | 35 例子如下：
Class A;
try {
A obj_A;
throw obj_A;
}
catch(A)
catch(A&)
如果我理解没错的话， throw obj_A 会 call 一个copy constructor
产生一个temporary exception obj_tmpA=A(obj_A);
我想知道的是这个 obj_tmpA的lifescope 是怎么定义的，
是包含 try and catch 的那个 {} 吗？
谢谢 |
|
c********e
发帖数: 383 | 36 one simple rule for c++ exception, always catch by reference. avoid all
these hard to believe spots. |
|
n********e
发帖数: 272 | 37 I used catch(std::bad_alloc) in my code to catch exceptions if 'new' fails.
But when i execute my code, a segamentation error happened. But GDB revealed
it was an early memory problem caused the error.
I used valgrind and efence, both tell me that an early 'new' operation failed.
But why it wasn't caught by my catch? by the way, I have enough memory for the
whole process.why I can still get a bad memory allocation error?
thanks |
|
c********e
发帖数: 383 | 38 throw without an operand means re-throw. if re-throw is used in a context
when
there is no exception, terminate () will be called. |
|
P*****f
发帖数: 2272 | 39 http://www.parashift.com/c++-faq-lite/exceptions.html#faq-17.3
#include
#include
using namespace std;
class A{
public:
A(){}
~A(){throw "aa";}
};
int main(int argc, char** argv){
try{
A a;
try{
A b;
A c;
}catch(...){
cout<<"kkk1"<
}
}catch(...){
cout<<"kkk2"<
}
cout<<"kkk3"<
return 0;
}
program crash. 请问怎么就crash了?
如果去掉"A c;",一切正常. 谢谢! |
|
b******n
发帖数: 592 | 40 Is there any automated way to test exceptions? |
|
c******n
发帖数: 145 | 41 If you mean throw...catch, I think all function should throw an exception
when they cannot fulfill the promises.
I guess what you want to say is the "class invariant"??? It is often called
at the end of the CTOR. |
|
g*****g
发帖数: 34805 | 42 The catch should go from specific to general, i.e.
chidrens to parents in that order so that chidrens have
a chance to catch it and give a more specific message.
If two exceptions are unrelated, then it doesn't matter. |
|
e***a
发帖数: 18 | 43 There are situations that exception could be throw within constructor and we
usually employ auto_ptr to protect resources. But if we do not have auto_
ptr can we use the following technique to handle it?
Please search "QUESTION" and see my question.
Thanks!
#include
using namespace std;
class E1 {
public: E1() {
int i = 1;
int j = 2;
int k = 3;
printf("i = %d, j = %d, |
|
t******c
发帖数: 348 | 44 since you throw an exception in the constructor of E1,
i don't think an E1 object is successfully constructed,
that means E1 object still doesn't exist.
there is no reason to call ~E1() to destory something not born yet.
so there is no *beep* resources for you to protect and release!
we |
|
f******e
发帖数: 164 | 45 有人听说过Herb Sutter的《Exceptional C++ Style》么？这本书怎样，有看过的评价
一下么？谢谢。。 |
|
t****t
发帖数: 6806 | 46 what if string throw another exception? |
|
r*********r
发帖数: 3195 | 47 但是 logic_error 和 runtime_error 都有 data member 是 string 类型.
也就是说你 throw 一个 runtime_error object 时, 要作 string 的 copy
construction,
这样也有可能 throw another exception |
|
r*********r
发帖数: 3195 | 48 well, the standard says logic_error's interface is like this:
class logic_error : public exception
{
public:
explicit logic_error(const string& __arg);
}
hard to imagine an implementation that can actually avoid copying __arg.
can you?
|
|
r*********r
发帖数: 3195 | 49 i came up with an idea: define a char * data member x;
and do the following in the constructor:
x = (char *)malloc(__arg.size());
strcpy(x, __arg.c_str());
and return x in what(), and call free(x) in the destructor.
maybe that works, at least it's guaranteed that no additional exception will
be thrown. |
|
