Spreading throws clause to all other classes which extends from it

I was editing a test method while adding some pre-checks before the test starts. So I added some functionality to @Before method which throws exception. And the same method was overridden from a base class. So if I added throws clause, I needed to add to super class including 4 other extending classes.

I tried to search a little but I couldn’t find any answer. What is the best approach to similar problem? Is it OK to spread the throws declaration to different classes even though they are not really throwing it? Or is it best to keep it in try catch and throw a RuntimeException (in this case AssertionError).

Example:

Before adding checks;

abstract class MyBaseTest {   public void setup() {     // setup logic   } }  class MyConcreteTest1 extends MyBaseTest {   @Override   public void setup() {     super.setup();     // more setup logic   } }  class MyConcreteTest2 extends MyBaseTest {   @Override   public void setup() {     super.setup();     // more setup logic   } } 

Option 1: Spread the throws declaration;

abstract class MyBaseTest {   public void setup() throws IOException {     // setup logic   } }  class MyConcreteTest1 extends MyBaseTest {   @Override   public void setup() throws IOException {     super.setup();     // more setup logic   } }  class MyConcreteTest2 extends MyBaseTest {   @Override   public void setup() throws IOException {     super.setup();     myNewMethodWhichThrowsIOException();     // more setup logic   } } 

Option 2: Keeping inside the method which throws the actual exception;

// rest stays the same  class MyConcreteTest2 extends MyBaseTest {   @Override   public void setup() {     super.setup();     try {       myNewMethodWhichThrowsIOException();     } catch (IOException e) {       throw new AssertionError(e);     }     // more setup logic   } } 

Thanks!

Exim – spam spreading by “exim -bpc”?

I found that server have low reputation on talosintelligence. When I search through exim logs I found that in each minute there is run of exim process to counting queue.

exim mainlog:

2019-04-21 11:45:37 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:46:34 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:47:35 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:48:34 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:49:40 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:50:48 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:51:51 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:52:51 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:53:51 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:54:51 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:55:51 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:56:51 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:57:53 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:58:53 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 11:59:53 cwd=/ 2 args: /usr/sbin/exim -bpc 2019-04-21 12:00:53 cwd=/ 2 args: /usr/sbin/exim -bpc 

In cron I don’t have about that (only spam checks – but run in 5min interval, not in 1min intervals)

cron log:

Apr 21 10:35:01 web1 CROND[16720]: (root) CMD (/usr/local/cpanel/scripts/eximstats_spam_check 2>&1) Apr 21 10:50:01 web1 CROND[20325]: (root) CMD (/usr/local/cpanel/scripts/eximstats_spam_check 2>&1) Apr 21 11:05:01 web1 CROND[23974]: (root) CMD (/usr/local/cpanel/scripts/eximstats_spam_check 2>&1) Apr 21 11:20:01 web1 CROND[27758]: (root) CMD (/usr/local/cpanel/scripts/eximstats_spam_check 2>&1) Apr 21 11:35:01 web1 CROND[31355]: (root) CMD (/usr/local/cpanel/scripts/eximstats_spam_check 2>&1) Apr 21 11:50:01 web1 CROND[2504]: (root) CMD (/usr/local/cpanel/scripts/eximstats_spam_check 2>&1) 

Maybe someone have idea where to search more about that thing?

cPanel version if needed v78.0.21

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by: vinayyy
Created: —
Category: Directory Submission
Viewed: 180


Condensing buttons or spreading them out on mobile

Designing an app with a map feature which has to contain two separate buttons for layer changing and location finding. Originally had the two button on the bottom right, for easy access for the thumb but I heard condensing buttons too close together in mobile can cause the user to accidentally press what they don’t want. So spreading the buttons out like in the right image is better, but I feel this creates more physical ‘reach’?

Should controls like this be kept together or apart?

enter image description here

Spreading $n$ points in $\{0,1\}^n$ as far as possible

Given a positive integer $ n$ , the Hamming distance $ d^H_n(x,y)$ of $ x,y\in \{0,1\}^n$ is defined by $ $ d^H_n(x,y) = |\{k\in\{0,\ldots,n-1\}: x(k)\neq y(k)\}|.$ $ We say that a positive integer $ s$ is $ n$ spreadable if there is $ T\subseteq \{0,1\}^n$ with $ |T|=n$ and for $ x\neq y\in T$ we have $ d_H(x,y) \geq s$ . For any integer $ n\geq 1$ let $ m_n$ be the largest $ n$ -spreadable number less or equal to $ n$ .

Question. Do we have $ \lim \sup_{n\to\infty}\frac{m_n}{n} = 1$ ?