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Pretty printing JSON from Jackson 2.2's ObjectMapper
...ring, Object>());. You just have to make sure to use the writer you get from the configured ObjectMapper.
– Martin
Jul 11 '17 at 14:04
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How to make Java honor the DNS Caching Timeout?
... the load-balancing to work, the application server needs to honor the TTL from DNS response and to resolve the domain name again when cache times out. However, I couldn't figure out a way to do this in Java.
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Return two and more values from a method
Is there any possibility to return multiple values from method? Something like this:
4 Answers
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In what cases do I use malloc and/or new?
...typesafe in any meaningful way. In C++ you are required to cast the return from void*. This potentially introduces a lot of problems:
#include <stdlib.h>
struct foo {
double d[5];
};
int main() {
foo *f1 = malloc(1); // error, no cast
foo *f2 = static_cast<foo*>(malloc(sizeof(f...
Hibernate lazy-load application design
...ular operation, you need to express your intentions to Hibernate somehow.
From this point of view, solutions that express these intentions explicitly (namely, 2, 4 and 7) look reasonable and don't suffer from the lack of transparency.
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How to execute PHP code from the command line?
...lot more fun.
Anyway, the php command offers two switches to execute code from the command line:
-r <code> Run PHP <code> without using script tags <?..?>
-R <code> Run PHP <code> for every input line
You can use php's -r switch as such:
php -r 'echo ...
How do I copy the contents of one stream to another?
...
From .NET 4.5 on, there is the Stream.CopyToAsync method
input.CopyToAsync(output);
This will return a Task that can be continued on when completed, like so:
await input.CopyToAsync(output)
// Code from here on will be r...
Clear Application's Data Programmatically
... anyone using android:manageSpaceActivity.
Whenever I use this, I do so from a manageSpaceActivity which has android:process=":manager". There, I manually kill any other processes of my app. This allows me to let a UI stay running and let the user decide where to go next.
private static void kil...
Check if one list contains element from the other
...the
specified collection (optional operation). In other words, removes
from this list all of its elements that are not contained in the
specified collection.
true if this list changed as a result of the call
Its like
boolean b = list1.retainAll(list2);
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How to send parameters from a notification-click to an activity?
I can find a way to send parameters to my activity from my notification.
13 Answers
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