`mvn -B ..` or `mvn --batch-mode ...` will do the trick.

*Update*

* The documentation about batch mode see https://maven.apache.org/ref/3.6.1/maven-embedder/cli.html 
* Starting with Maven 3.6.1 (released 2019-04-04) you can use `--no-transfer-progress` will suppress the output of downloading messages at all without suppressing the other output.

First of all, as already answered by khmarbaise, you should use `mvn -B` to enable batch mode.

If you want also to get rid of the &quot;Downloading/Downloaded&quot; lines you can set the corresponding logger `org.apache.maven.cli.transfer.Slf4jMavenTransferListener` to a level higher than info. Therefore I used the `org.slf4j.simpleLogger.log` property as documented [here][1].

Using only the command line, you can do this:

    mvn -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn -B ...

Or you can use the `MAVEN_OPTS` environment variable as described [here][2]:

    export MAVEN_OPTS=-Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn

**Note:** As far as I am aware this only works for maven 3.1 and above.

  [1]: http://maven.apache.org/maven-logging.html#Configuring_logging
  [2]: https://maven.apache.org/guides/mini/guide-configuring-maven.html#Configuring_Parallel_Artifact_Resolution

Starting with Maven 3.6.1, Maven now has an option to suppress the transfer progress when downloading/uploading in interactive mode.

`mvn --no-transfer-progress ....`

or in short:

`mvn -ntp ... ....`

The full release note can be found here: http://maven.apache.org/docs/3.6.1/release-notes.html

Quick answer, use maven batch mode, add following to your maven command:

    -B -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn

For example:

    mvn deploy -B -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn

Same as above answers, but you don&#39;t need to add options to command line everytime. Just add the lines into file `${maven.projectBasedir}/.mvn/maven.config`:

```
--no-transfer-progress
```

Then you can use `mvn` as was:

```
mvn test
mvn deploy
```

I have a collection of BigDecimals (in this example, a `LinkedList`) that I would like to add together. Is it possible to use streams for this?

I noticed the `Stream` class has several methods

    Stream::mapToInt
    Stream::mapToDouble
    Stream::mapToLong

Each of which has a convenient `sum()` method. But, as we know, `float` and `double` arithmetic is almost always a bad idea.

So, is there a convenient way to sum up BigDecimals?

This is the code I have so far.

    public static void main(String[] args) {
        LinkedList&lt;BigDecimal&gt; values = new LinkedList&lt;&gt;();
        values.add(BigDecimal.valueOf(.1));
        values.add(BigDecimal.valueOf(1.1));
        values.add(BigDecimal.valueOf(2.1));
        values.add(BigDecimal.valueOf(.1));
        
        // Classical Java approach
        BigDecimal sum = BigDecimal.ZERO;
        for(BigDecimal value : values) {
            System.out.println(value);
            sum = sum.add(value);
        }
        System.out.println(&quot;Sum = &quot; + sum);
        
        // Java 8 approach
        values.forEach((value) -&gt; System.out.println(value));
        System.out.println(&quot;Sum = &quot; + values.stream().mapToDouble(BigDecimal::doubleValue).sum());
        System.out.println(values.stream().mapToDouble(BigDecimal::doubleValue).summaryStatistics().toString());
    }

As you can see, I am summing up the BigDecimals using `BigDecimal::doubleValue()`, but this is (as expected) not precise.


**Post-answer edit for posterity:**

Both answers were extremely helpful. I wanted to add a little: my real-life scenario does not involve a collection of raw `BigDecimal`s, they are wrapped in an invoice. But, I was able to modify Aman Agnihotri&#39;s answer to account for this by using the `map()` function for stream:

    public static void main(String[] args) {
        
        LinkedList&lt;Invoice&gt; invoices = new LinkedList&lt;&gt;();
        invoices.add(new Invoice(&quot;C1&quot;, &quot;I-001&quot;, BigDecimal.valueOf(.1), BigDecimal.valueOf(10)));
        invoices.add(new Invoice(&quot;C2&quot;, &quot;I-002&quot;, BigDecimal.valueOf(.7), BigDecimal.valueOf(13)));
        invoices.add(new Invoice(&quot;C3&quot;, &quot;I-003&quot;, BigDecimal.valueOf(2.3), BigDecimal.valueOf(8)));
        invoices.add(new Invoice(&quot;C4&quot;, &quot;I-004&quot;, BigDecimal.valueOf(1.2), BigDecimal.valueOf(7)));
        
        // Classical Java approach
        BigDecimal sum = BigDecimal.ZERO;
        for(Invoice invoice : invoices) {
            BigDecimal total = invoice.unit_price.multiply(invoice.quantity);
            System.out.println(total);
            sum = sum.add(total);
        }
        System.out.println(&quot;Sum = &quot; + sum);
        
        // Java 8 approach
        invoices.forEach((invoice) -&gt; System.out.println(invoice.total()));
        System.out.println(&quot;Sum = &quot; + invoices.stream().map((x) -&gt; x.total()).reduce((x, y) -&gt; x.add(y)).get());
    }
    
    static class Invoice {
        String company;
        String invoice_number;
        BigDecimal unit_price;
        BigDecimal quantity;

        public Invoice() {
            unit_price = BigDecimal.ZERO;
            quantity = BigDecimal.ZERO;
        }

        public Invoice(String company, String invoice_number, BigDecimal unit_price, BigDecimal quantity) {
            this.company = company;
            this.invoice_number = invoice_number;
            this.unit_price = unit_price;
            this.quantity = quantity;
        }
        
        public BigDecimal total() {
            return unit_price.multiply(quantity);
        }

        public void setUnit_price(BigDecimal unit_price) {
            this.unit_price = unit_price;
        }

        public void setQuantity(BigDecimal quantity) {
            this.quantity = quantity;
        }

        public void setInvoice_number(String invoice_number) {
            this.invoice_number = invoice_number;
        }

        public void setCompany(String company) {
            this.company = company;
        }

        public BigDecimal getUnit_price() {
            return unit_price;
        }

        public BigDecimal getQuantity() {
            return quantity;
        }

        public String getInvoice_number() {
            return invoice_number;
        }

        public String getCompany() {
            return company;
        }
    }

Adding up BigDecimals using Streams

I&#39;m trying to install Bower on XUbuntu 13.10, following the instructions on the Bower home page, after doing `sudo apt-get install npm` and `sudo npm install -g bower` I get the following after issuing `bower` on the command line:

    /usr/bin/env: node: No such file or directory

I then install Node (even though I assume that would not be unnecessary since Bower&#39;s only dependency would be NPM, correct?). Anyhow, after I install node with `sudo apt-get install node` any of the Bower commands, such as `bower help`, simply don&#39;t do anything, i.e. output nothing.

How to install Bower on Ubuntu (preferably without manually downloading various versions of things)?


Installing Bower on Ubuntu

In our company in the CI machines maven local repository is purged before every build. As result my build logs always have a bunch of noise like this

    Downloading: http://.../artifactory/repo/com/codahale/metrics/metrics-core/3.0.1/metrics-core-3.0.1.jar
    4/2122 KB   
    8/2122 KB   
    12/2122 KB   
    16/2122 KB   
    18/2122 KB   
    18/2122 KB   4/480 KB   
    18/2122 KB   8/480 KB   
    18/2122 KB   12/480 KB   
    18/2122 KB   16/480 KB   
    18/2122 KB   16/480 KB   4/1181 KB   
    18/2122 KB   16/480 KB   8/1181 KB   
    18/2122 KB   16/480 KB   12/1181 KB


Is there an option I to be able to disable the download progress indication?

disable maven download progress indication

In our company in the CI machines maven local repository is purged before every build. As result my build logs always have a bunch of noise like this
<pre><code class="hljs language-ruby">Downloading: http://.../artifactory/repo/com/codahale/metrics/metrics-core/3.0.1/metrics-core-3.0.1.jar
4/2122 KB 
8/2122 KB 
12/2122 KB 
16/2122 KB 
18/2122 KB 
18/2122 KB 4/480 KB 
18/2122 KB 8/480 KB 
18/2122 KB 12/480 KB 
18/2122 KB 16/480 KB 
18/2122 KB 16/480 KB 4/1181 KB 
18/2122 KB 16/480 KB 8/1181 KB 
18/2122 KB 16/480 KB 12/1181 KB
</code></pre>
Is there an option I to be able to disable the download progress indication?

So I have created an Android library and successfully compiled it into a .aar file. I called this aar file: `&quot;projectx-sdk-1.0.0.aar&quot;`. Now I want my new project to depend on this aar so what I have done is follow [this post](http://life.nimbco.us/referencing-local-aar-files-with-android-studios-new-gradle-based-build-system/).

But the post confuses me since I do not get the desired result:

&gt; The package name of the aar is : `com.projectx.photosdk` and the module inside is called `sdk`

Here is my current project structure:

    |-SuperAwesomeApp
    |--.idea
    |--gradle
    |--App
    |---aars
    |----projectx-sdk-1.0.0.aar
    |---build
    |---jars
    |---src
    |---build.gradle

And here is my Gradle build file:

    apply plugin: &#39;android&#39;
    
    buildscript {
        repositories {
            mavenCentral()
            flatDir {
                dirs &#39;aars&#39;
            }
        }
    }
    
    android {
        compileSdkVersion 19
        buildToolsVersion &quot;19.0.1&quot;
    
        defaultConfig {
            minSdkVersion 11
            targetSdkVersion 19
            versionCode 1
            versionName &quot;1.0&quot;
        }
        buildTypes {
            release {
                runProguard false
                proguardFiles getDefaultProguardFile(&#39;proguard-android.txt&#39;), &#39;proguard-rules.txt&#39;
            }
        }
    }
    
    dependencies {
        compile &#39;com.android.support:gridlayout-v7:19.0.1&#39;
        compile &#39;com.android.support:support-v4:19.0.1&#39;
        compile &#39;com.android.support:appcompat-v7:19.0.1&#39;

    
        compile &#39;com.projectx.photosdk:sdk:1.0.0@aar&#39;
    //    compile files( &#39;aars/sdk-1.0.0.aar&#39; ) // Does not work either
    }

**EDIT**

The errors I am getting:

    Failed to refresh Gradle project &#39;SuperAwesomeApp&#39;
         Could not find com.projectx.photosdk:sdk:1.0.0.
         Required by:
         SuperAwesomeApp:App:unspecified


Adding local .aar files to my gradle build

I&#39;m trying to build a `Dynamic Web Application` in eclipse using Java 8 (and Wildfly appServer if that matters) but I&#39;m unable to make Eclipse Luna M5 use Java 8 (I do have Java 8 BETA support installed and it works on JavaSE projects). 

In my POM I set the level to Java 8:

    &lt;plugin&gt;
        &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
        &lt;version&gt;3.1&lt;/version&gt;
    	&lt;configuration&gt;
    		&lt;source&gt;1.8&lt;/source&gt;
    		&lt;target&gt;1.8&lt;/target&gt;
    	&lt;/configuration&gt;
    &lt;/plugin&gt;

But after I do `maven -&gt; update project` I get the following error:

    Could not update project ExampleApp configuration
    Version 1.8 of project facet java does not exist.

And indeed there is no java 1.8 project facet under `project-&gt;preferences-&gt;project facets-&gt;java`

Can I manually create such `facet` and add It to to eclipse or I&#39;ll have to wait until java 8 is released and the eclipse guys decide to add it ?



Version 1.8 of project facet java does not exist

I’m using Maven 3.1.1.  In one of my projects, I reference another one of my projects …

        &lt;dependencies&gt;
                &lt;dependency&gt;
                        &lt;groupId&gt;org.mainco.subco&lt;/groupId&gt;
                        &lt;artifactId&gt;myprojectA&lt;/artifactId&gt;
                        &lt;version&gt;${project.version}&lt;/version&gt;
                &lt;/dependency&gt;

The above is dependent on a couple other of my projects.  However, when I run “mvn clean install,”  Maven attempts to download these artifacts instead of just using what’s in my local repository.  How do I get Maven to only download things if they do not exist in my local repository?  Here’s the output of what I’m seeing …

	davea$ mvn clean install
	[INFO] Scanning for projects...
	[INFO]                                                                         
	[INFO] ------------------------------------------------------------------------
	[INFO] Building subco admin Module 57.0.0-SNAPSHOT
	[INFO] ------------------------------------------------------------------------
	Downloading: http://download.java.net/maven/2/org/mainco/subco/myprojectA/57.0.0-SNAPSHOT/maven-metadata.xml
	Downloading: http://download.java.net/maven/2/org/mainco/subco/subco/57.0.0-SNAPSHOT/maven-metadata.xml
	Downloading: http://download.java.net/maven/2/org/mainco/subco/projectB/57.0.0-SNAPSHOT/maven-metadata.xml
	Downloading: http://download.java.net/maven/2/org/mainco/subco/projectC/57.0.0-SNAPSHOT/maven-metadata.xml
	[INFO]


How do I prevent Maven from downloading artifacts every time?

I&#39;m starting to use IntelliJ IDEA 13 Ultimate Edition and was wonder if it had a searchable tabular view of maven dependencies for a project like Eclipse does.
For example, in Eclipse I can check my project&#39;s maven dependencies by going to its pom and then clicking on the &quot;Dependencies Hierarchy&quot; tab. From there, I can search for the existence of specific dependencies and have the ability to view the POMs of said dependencies.

All I&#39;ve found so far in IntelliJ is the diagram view of dependencies, which can get really cluttered when you have a lot of dependencies and doesn&#39;t really allow me to view POMs or search.

Any ideas?

Can IntelliJ display a searchable maven dependency like Eclipse?

I am using IntelliJ IDEA and all plugins for Spring are activated,
but when I load my Maven project I have the following error:

&gt;Spring Configuration Check  
&gt;Unmapped Spring configuration files found.  
&gt;Please configure/setup Spring facet for modules  

Any ideas what prevented it from being configured automatically?


Content Type	Original Author	Original Content on Stackoverflow
Question	gsf	View Question on Stackoverflow
Solution 1 - Maven	khmarbaise	View Answer on Stackoverflow
Solution 2 - Maven	FelixRabe	View Answer on Stackoverflow
Solution 3 - Maven	Rene Larsen	View Answer on Stackoverflow
Solution 4 - Maven	bladekp	View Answer on Stackoverflow
Solution 5 - Maven	aleung	View Answer on Stackoverflow

disable maven download progress indication

Maven Problem Overview

Maven Solutions

Solution 1 - Maven

Solution 2 - Maven

Solution 3 - Maven

Solution 4 - Maven

Solution 5 - Maven

Installing Bower on Ubuntu

Adding up BigDecimals using Streams

Attributions