JAR Executable much slower than running by Netbeans

Question

Good morning,

I have a project in netbeans that uses Maven to build an executable jar, so far so good. The problem is that when I run the project by ". jar" that is generated by Maven, execution takes much longer to perform certain functions than when I run by netbeans IDE. To get an idea, the start of the program run by Netbeans takes 8 seconds, while in ". jar" it takes approximately 25 seconds. At this beginning I read some configuration files, and digital certificates. Other functions that take longer, such as signing xml documents, which already took a while in the IDE, last an eternity in the ." jar". Also, the strange thing is that my project has few libraries.

I also searched on other topics, I found many saying (like this here) to generate the ". jar" with the option to extract the libraries in the generated file, but I don’t really know how to do it in Maven. I even tried a few ways, but I don’t know if I’m making a mistake, or if it didn’t have any effect.

I’ll post my pom.xml file here to see if anyone has any idea what I can do to fix this.

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>br.com.argus</groupId>
    <artifactId>CronosAuxiliar</artifactId>
    <version>1.0.0</version>
    <packaging>jar</packaging>
    <dependencies>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
            <type>jar</type>
        </dependency>
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
            <version>2.9.7</version>
            <type>jar</type>
        </dependency>
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20140107</version>
            <type>jar</type>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.2</version>
        </dependency>
        <dependency>  
            <groupId>br.com.samuelweb</groupId>  
            <artifactId>java-nfe</artifactId>  
            <version>3.10.8</version>  
        </dependency>  

        <!--Dependência de Log-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <dependency>
            <groupId>br.com.argus</groupId>
            <artifactId>CronosLibNotaFiscal</artifactId>
            <version>[1,)</version>
        </dependency>
    </dependencies>
    <repositories>
        <repository>  
            <name>Repositorio Autocom SnapShot</name>  
            <id>Snapshot</id>  
            <url>http://www.autocomsistemas.com.br:8081/nexus/content/repositories/autocom/</url>  
        </repository> 
    </repositories>    
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <build>        
        <plugins>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>3.1.0</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>br.com.argus.cronos.main.CronosAuxiliar</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>  
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>

    </build>    
</project>