|Cannot find symbol println|
You concatenate Strings with
System.out.println("You have ", numGuards, " guards");
System.out.println("You have " + numGuards + " guards");
|System.out.println - cannot resolve symbol|
Are you using any IDE or writing in a notepad and then compiling?
If using IDE, check if JRE library is there in build path. If using
plain editor, you may need to setup CLASSPATH environment variable
with java library.
t.jar is important
|Why my program runs fast when I make a call to System.nanoTime() outside the System.out.println statement?|
The second one creates a new StringBuilder and appends a String to
it before taking the timings. The first one takes the timing before
doing this extra work.
The second one is equivalent to
System.out.println(new StringBuilder().append("Time: ")
.append(System.nanoTime() - t).toString());
StringBuildler sb = new StringBuilder().append("Time: ");
// included in timing
long time = System.nanoTime() - t;
BTW Just performing an output to the console can disturb very short
tasks and make them slower. I suggest you run the test many times,
ignore the first 20K as warm up and print a summary of the results at
|System.out.println(); and System.err.println(); printing interchangeably|
Those are two different output streams, the order in which they are
invoked is not the only thing that matters. They might flush their
contents towards the console at a different time.
Edit: after a bit more digging this answer
indicates that it might be an (unresolved) eclipse bug as well. It's been open for 10 years,
don't get your hopes up on a fix anytime soon.
|dyld: lazy symbol binding failed: can't resolve symbol|
That error message indicates that you are linking against a Shared
dylib) which is not available in the library
path at run time when you are executing it.
If you have installed the framework in one of the standard
locations (such as
/Library/Frameworks) on your original
build and in the same place when you checked it your and rebuilt, then
you should be OK. However, there are some complexities to framework
linking that can cause trouble if you are not careful, especially if
you use embedded frameworks. It looks like you are not building an
application, so I assume you're not embedding the framework.
Compare the installation locations of your frameworks on both the
new and old computer and if they are not the same, that's likely your
If things look like they are in the same place, you may need to
DYLD_LIBRARY_PATH (good stack exchange question
|Apache Storm-Starter: Intellij IDEA: Cannot resolve symbol 'LocalCluster'; Cannot resolve symbol 'LocalDPRC'|
I had similar issue and I finally resolved by realizing that you
need to do
mvn clean install -DskipTests=true
at the top storm directory to build your storm first.