title: gradle mysql dependency syncs but doesnt work
body: <p>So I am adding a mysql dependency to my <code>build.gradle</code>, and it syncs perfect, but the problem is that I cant use the dependency code.
  for instance, I added mysql.jar as a dependency, and it loaded, but trying to import com.mysql.jdbc.driver wont work.</p>
  
  <p>Notice that Im using libgdx library</p>
  
  <p>My <code>build.gradle</code>:</p>
  
  <pre><code>buildscript {
      repositories {
          mavenLocal()
          mavenCentral()
          maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
          jcenter()
      }
  
      dependencies {
          classpath 'de.richsource.gradle.plugins:gwt-gradle-plugin:0.6'
          classpath 'com.android.tools.build:gradle:1.5.0'
          classpath 'com.mobidevelop.robovm:robovm-gradle-plugin:2.3.0'
      }
  }
  
  allprojects {
      apply plugin: "eclipse"
      apply plugin: "idea"
  
      version = '1.0'
      ext {
          appName = "Baladiya"
          gdxVersion = '1.9.6'
          roboVMVersion = '2.3.0'
          box2DLightsVersion = '1.4'
          ashleyVersion = '1.7.0'
          aiVersion = '1.8.0'
      }
  
      repositories {
          mavenLocal()
          mavenCentral()
          maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
          maven { url "https://oss.sonatype.org/content/repositories/releases/" }
      }
  
  }
  
  project(":desktop") {
      apply plugin: "java"
  
      dependencies {
          compile project(":core")
          compile "com.badlogicgames.gdx:gdx-backend-lwjgl:$gdxVersion"
          compile "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
          compile "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-desktop"
          compile "com.badlogicgames.gdx:gdx-tools:$gdxVersion"
          compile files("libs/mysql.jar")
      }
  }
  
  project(":android") {
      apply plugin: "android"
  
      configurations { natives }
  
      dependencies {
          compile project(":core")
          compile "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
          natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi"
          natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi-v7a"
          natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-arm64-v8a"
          natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86"
          natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86_64"
          compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
          natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-armeabi"
          natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-armeabi-v7a"
          natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-arm64-v8a"
          natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-x86"
          natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-x86_64"
          compile files("libs/mysql.jar")
      }
  }
  
  project(":ios") {
      apply plugin: "java"
      apply plugin: "robovm"
  
  
      dependencies {
          compile project(":core")
          compile "com.mobidevelop.robovm:robovm-rt:$roboVMVersion"
          compile "com.mobidevelop.robovm:robovm-cocoatouch:$roboVMVersion"
          compile "com.badlogicgames.gdx:gdx-backend-robovm:$gdxVersion"
          compile "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-ios"
          compile "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-ios"
          compile files("libs/mysql.jar")
      }
  }
  
  project(":html") {
      apply plugin: "gwt"
      apply plugin: "war"
  
      dependencies {
          compile project(":core")
          compile "com.badlogicgames.gdx:gdx-backend-gwt:$gdxVersion"
          compile "com.badlogicgames.gdx:gdx:$gdxVersion:sources"
          compile "com.badlogicgames.gdx:gdx-backend-gwt:$gdxVersion:sources"
          compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion:sources"
          compile "com.badlogicgames.gdx:gdx-box2d-gwt:$gdxVersion:sources"
          compile files("libs/mysql.jar")
      }
  }
  
  project(":core") {
      apply plugin: "java"
  
  
      dependencies {
          compile "com.badlogicgames.gdx:gdx:$gdxVersion"
          compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
          compile files("libs/mysql.jar")    
      }
  }
  
  tasks.eclipse.doLast {
      delete ".project"
  }
  </code></pre>
  
  <p>My import error: 
  <a href="https://i.stack.imgur.com/XruUM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XruUM.png" alt="import error"></a></p>