Error occurred during initialization of VM, could not reserve enough space for object heap

When we try to run any Java application that required more heap memory or we have explicitly set the heap memory -Xmx. e.g. to set heap memory to 512 MB of RAM(Random Access Memory) size use, -Xmx512M 

Solution:

There could be multiple ways to fix this issue.

1. Restart the Virtual Machine or system.

2. Set environment variable JAVA_OPTS=-Xms256M. To read more on the environment variable read here.

Brick-Hued Hills: A Palette of Nature's Beauty

Nestled between the valleys and under the expansive sky, the brick-hued hills stand as a testament to the awe-inspiring artistry of nature. These unique geological formations, characterized by their warm and earthy tones, evoke a sense of tranquility and connection with the natural world. In this article, we explore the captivating allure of brick-hued hills and their significance in the tapestry of landscapes.

A Painter's Canvas

The brick-hued hills derive their distinctive color from a harmonious blend of minerals, sediments, and geological processes that have unfolded over millennia. The earthy red and brown tones result from the presence of iron oxides and other minerals that have weathered and oxidized over time. As the sun's rays caress these hills, their hues shift and transform, creating a breathtaking spectacle that seems almost otherworldly.

Nature's Sculptors

Geological forces have played a vital role in shaping these brick-hued hills into their current form. Erosion, uplift, and tectonic activity have sculpted the land, revealing layers of sedimentary rock and geological history. These hills often emerge as a result of intricate geological processes, including sediment deposition, compression, and weathering.

Cultural and Ecological Significance

Brick-hued hills hold cultural and ecological significance in various regions around the world. They often serve as iconic landmarks, symbols of resilience, and sources of inspiration for local communities. In some cultures, these hills are associated with ancient legends and myths, enriching the tapestry of human storytelling.

Moreover, these unique landscapes often support diverse ecosystems, housing a variety of flora and fauna adapted to their distinct geology and climatic conditions. The undulating contours of brick-hued hills provide habitats for plant species that thrive in arid or semi-arid environments. The interplay between the terrain, soil composition, and sunlight creates microhabitats that sustain life in harmony with the land.

Visions of Tranquility

The allure of brick-hued hills extends beyond their visual splendor. They offer a sanctuary for those seeking solace and contemplation. The tranquility of these landscapes invites travelers and explorers to immerse themselves in the raw beauty of the earth, allowing them to connect with nature on a profound level.

Preserving Natural Treasures

As we marvel at the captivating beauty of brick-hued hills, it is imperative to recognize the importance of environmental stewardship. These unique landscapes are fragile and vulnerable to human activities and climate change. Conservation efforts are crucial to ensure that future generations can continue to be enchanted by the timeless allure of these natural wonders.

The brick-hued hills stand as a testament to the remarkable artistry of nature, showcasing the harmonious interplay between geology, minerals, and time. Their warm and earthy tones invite us to pause and reflect on the intricate beauty that surrounds us. As we traverse the landscapes of brick-hued hills, we are reminded of the boundless wonders that the natural world has to offer.

Unused assignments should be removed | Sonar

Sonar code smell "Unused assignments should be removed" means, 

a dead store happens when a local variable is assigned a value that is not read by any subsequent instruction. Calculating or retrieving a value only to then overwrite it or throw it away, could indicate a serious error in the code. Even if it’s not an error, it is at best a waste of resources. Therefore all calculated values should be used.

Noncompliant Code 

i = a + b; // Noncompliant; calculation result not used before value is overwritten

i = compute();

Compliant Solution

i = a + b;

i += compute();

SQL query to update DynamoDB records

In this post, we will look at how to alter or update records in the No-SQL DynamoDB table. The SQL language provides the UPDATE statement for modifying data. Amazon DynamoDB uses the UpdateItem operation to accomplish similar tasks.

Syntax to run the update command

UPDATE <"TableName">
SET <column name> = <value>
WHERE <column name> = <value>

e.g.

UPDATE "user"
SET enabled='true'
WHERE id='dynamoDBUser'

Here SET clause is to set the value which you want to set, and WHERE clause is to identify the right row or data from the table.

Reference:

Amazon DynamoDB SQLtoNoSQL UdateData