In Python, we can use os.path.isfile() or pathlib.Path.is_file() (Python 3.4) to check if a file exists.

Date: 2019-08-11 View: 2152

In Python, we can use in operator or str.find() to check if a String contains another String.

Date: 2019-08-11 View: 1860

In Python, we can use len() to count the number of items in a List

Date: 2019-08-11 View: 1913

In Java, we can use String.join(",", list) to join a List String with commas.

Date: 2019-08-11 View: 1909

In Maven, you can use mvn help:effective-pom to list all the current project’s plugins and its version.

Date: 2019-08-11 View: 1914

In Java, you can use String.format("%02x", bytes) to convert bytes to hex easily.

Date: 2019-08-11 View: 2371

In Java, you can use the Security.getAlgorithms("MessageDigest") to list all the available MessageDigest algorithms.

Date: 2019-08-11 View: 1615

In Java, we can convert the BigInteger to a String object and get the length of the String.

Date: 2019-08-11 View: 1883

Generating a Maven report with mvn site, but hits the following errors

Date: 2019-08-11 View: 2752

Maven SpotBugs example

In this article, we will show you how to use SpotBugs Maven Plugin to find bugs in Java code.

Date: 2019-08-11 View: 2866

In Java, there is no global keyword, but we can use public static variable to referring a global variable.

Date: 2019-08-11 View: 1838

Maven PMD example

In this article, we will show you how to use Maven PMD Plugin to analyze the Java code.

Date: 2019-08-11 View: 1888

In Maven, you can use Apache Maven Dependency Plugin, goal dependency:purge-local-repository to remove the project dependencies from the local repository, and re-download it again.

Date: 2019-08-11 View: 2228

In Java, we can use JMH (Java Microbenchmark Harness) framework to measure the performance of a function.

Date: 2019-08-11 View: 2067

A JMH benchmark test about Forward loop vs Reverse loop for a List. There is a myth about reverse loop is faster, is this true?

Date: 2019-08-11 View: 1689