In Java, we can use Semaphore to limit the number of threads to access a certain resource.

Date: 2019-08-11 View: 1486

In Java, we can use String.contains() to check if a String contains a substring.

Date: 2019-08-11 View: 1268

Java BlockingQueue examples

In Java, we can use BlockingQueue to create a queue which shared by both producer and the consumer.

Date: 2019-08-11 View: 1248

Add --allow-unrelated-histories to solve the Git fatal error – “refusing to merge unrelated histories”

Date: 2019-08-11 View: 1228

Python example to read a log file, line by line into a list.

Date: 2019-08-11 View: 1164

In Java, there are few ways to read a file line by line into a List

Date: 2019-08-11 View: 1437

The Files.walk API is available in Java 8, it is recommended to use try-with-resources to close the Files.walk stream.

Date: 2019-08-11 View: 1353

In Java, we can use ProcessBuilder to call external commands easily :

Date: 2019-08-11 View: 1802

In Python, we can use os.walker or glob to create a find() like function to search or list files or folders in a specified directory and also it’s subdirectories.

Date: 2019-08-11 View: 1468

Two Java examples to show you how to list files in a directory :

Date: 2019-08-11 View: 1255

In Java, we can use ProcessBuilder to run a Windows batch file like this :

Date: 2019-08-11 View: 1419

Test a Spring Webflux endpoint with the WebTestClient, and hits the following error messages. Is this possible to increase the timeout?

Date: 2019-08-11 View: 5391

This java.lang.ArrayIndexOutOfBoundsException is thrown when we are accessing an array with an index which is greater than the size of an array.

Date: 2019-08-11 View: 1493

On Windows, the key to send JSON data is double-quotes like this

Date: 2019-08-11 View: 2050

The Java project is using log4j2, but look like some components are used SLF4J logging and caused the following error message:

Date: 2019-08-11 View: 1544