added project structure

.idea/compiler.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="scientific_calculator" />
+      </profile>
+    </annotationProcessing>
+    <bytecodeTargetLevel target="1.8">
+      <module name="scientific_calculator" target="1.5" />
+    </bytecodeTargetLevel>
+  </component>
+</project>

.idea/kotlinc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="KotlinCommonCompilerArguments">
+    <option name="languageVersion" value="1.1" />
+    <option name="apiVersion" value="1.1" />
+  </component>
+</project>

.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectInspectionProfilesVisibleTreeState">
+    <entry key="Project Default">
+      <profile-state>
+        <expanded-state>
+          <State>
+            <id />
+          </State>
+        </expanded-state>
+        <selected-state>
+          <State>
+            <id>Android</id>
+          </State>
+        </selected-state>
+      </profile-state>
+    </entry>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+  <component name="masterDetails">
+    <states>
+      <state key="GlobalLibrariesConfigurable.UI">
+        <settings>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="JdkListConfigurable.UI">
+        <settings>
+          <last-edited>1.8</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ProjectJDKs.UI">
+        <settings>
+          <last-edited>1.8</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ProjectLibrariesConfigurable.UI">
+        <settings>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ScopeChooserConfigurable.UI">
+        <settings>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+    </states>
+  </component>
+</project>

.idea/modules.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/scientific_calculator.iml" filepath="$PROJECT_DIR$/scientific_calculator.iml" />
+    </modules>
+  </component>
+</project>

.idea/workspace.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="2198802b-d4ec-4041-8e1d-7aeccbb96f0d" name="Default" comment="" />
+    <ignored path="$PROJECT_DIR$/out/" />
+    <ignored path="$PROJECT_DIR$/target/" />
+    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
+    <option name="TRACKING_ENABLED" value="true" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="ExecutionTargetManager" SELECTED_TARGET="default_target" />
+  <component name="FileEditorManager">
+    <leaf>
+      <file leaf-file-name="pom.xml" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/pom.xml">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="0">
+              <caret line="0" column="0" lean-forward="false" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+              <folding />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="MainApplication.java" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodewilmington/scientificcalculator/MainApplication.java">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="225">
+              <caret line="15" column="5" lean-forward="true" selection-start-line="15" selection-start-column="5" selection-end-line="15" selection-end-column="5" />
+              <folding />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="Console.java" pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodewilmington/scientificcalculator/Console.java">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="360">
+              <caret line="24" column="58" lean-forward="true" selection-start-line="24" selection-start-column="58" selection-end-line="24" selection-end-column="58" />
+              <folding />
+            </state>
+          </provider>
+        </entry>
+      </file>
+    </leaf>
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Class" />
+      </list>
+    </option>
+  </component>
+  <component name="GradleLocalSettings">
+    <option name="externalProjectsViewState">
+      <projects_view />
+    </option>
+  </component>
+  <component name="IdeDocumentHistory">
+    <option name="CHANGED_PATHS">
+      <list>
+        <option value="$PROJECT_DIR$/src/main/java/com/zipcodewilmington/scientificcalculator/MainApplication.java" />
+        <option value="$PROJECT_DIR$/src/main/java/com/zipcodewilmington/scientificcalculator/Console.java" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectFrameBounds">
+    <option name="x" value="1772" />
+    <option name="y" value="113" />
+    <option name="width" value="1440" />
+    <option name="height" value="873" />
+  </component>
+  <component name="ProjectView">
+    <navigator currentView="ProjectPane" proportions="" version="1">
+      <flattenPackages />
+      <showMembers />
+      <showModules />
+      <showLibraryContents />
+      <hideEmptyPackages />
+      <abbreviatePackageNames />
+      <autoscrollToSource />
+      <autoscrollFromSource />
+      <sortByType />
+      <manualOrder />
+      <foldersAlwaysOnTop value="true" />
+    </navigator>
+    <panes>
+      <pane id="PackagesPane" />
+      <pane id="Scratches" />
+      <pane id="Scope" />
+      <pane id="ProjectPane">
+        <subPane>
+          <PATH>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="scientific_calculator" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.ProjectViewProjectNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="scientific_calculator" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+          </PATH>
+          <PATH>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="scientific_calculator" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.ProjectViewProjectNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="scientific_calculator" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="src" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+          </PATH>
+          <PATH>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="scientific_calculator" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.ProjectViewProjectNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="scientific_calculator" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="src" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="main" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+          </PATH>
+          <PATH>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="scientific_calculator" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.ProjectViewProjectNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="scientific_calculator" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="src" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="main" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="java" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="scientificcalculator" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+          </PATH>
+        </subPane>
+      </pane>
+    </panes>
+  </component>
+  <component name="PropertiesComponent">
+    <property name="settings.editor.selected.configurable" value="reference.projectsettings.compiler.javacompiler" />
+    <property name="project.structure.last.edited" value="Project" />
+    <property name="project.structure.proportion" value="0.0" />
+    <property name="project.structure.side.proportion" value="0.2" />
+  </component>
+  <component name="RunDashboard">
+    <option name="ruleStates">
+      <list>
+        <RuleState>
+          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
+        </RuleState>
+        <RuleState>
+          <option name="name" value="StatusDashboardGroupingRule" />
+        </RuleState>
+      </list>
+    </option>
+  </component>
+  <component name="RunManager" selected="Application.MainApplication">
+    <configuration default="false" name="MainApplication" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
+      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea">
+        <pattern>
+          <option name="PATTERN" value="com.zipcodewilmington.scientificcalculator.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+      <option name="MAIN_CLASS_NAME" value="com.zipcodewilmington.scientificcalculator.MainApplication" />
+      <option name="VM_PARAMETERS" />
+      <option name="PROGRAM_PARAMETERS" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
+      <option name="ENABLE_SWING_INSPECTOR" value="false" />
+      <option name="ENV_VARIABLES" />
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <module name="scientific_calculator" />
+      <envs />
+      <method />
+    </configuration>
+    <configuration default="true" type="#org.jetbrains.idea.devkit.run.PluginConfigurationType" factoryName="Plugin">
+      <module name="" />
+      <option name="VM_PARAMETERS" value="-Xmx512m -Xms256m -XX:MaxPermSize=250m -ea" />
+      <option name="PROGRAM_PARAMETERS" />
+      <predefined_log_file id="idea.log" enabled="true" />
+      <method />
+    </configuration>
+    <configuration default="true" type="AndroidRunConfigurationType" factoryName="Android App">
+      <module name="" />
+      <option name="DEPLOY" value="true" />
+      <option name="ARTIFACT_NAME" value="" />
+      <option name="PM_INSTALL_OPTIONS" value="" />
+      <option name="ACTIVITY_EXTRA_FLAGS" value="" />
+      <option name="MODE" value="default_activity" />
+      <option name="TARGET_SELECTION_MODE" value="SHOW_DIALOG" />
+      <option name="PREFERRED_AVD" value="" />
+      <option name="CLEAR_LOGCAT" value="false" />
+      <option name="SHOW_LOGCAT_AUTOMATICALLY" value="false" />
+      <option name="SKIP_NOOP_APK_INSTALLATIONS" value="true" />
+      <option name="FORCE_STOP_RUNNING_APP" value="true" />
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+      <option name="USE_LAST_SELECTED_DEVICE" value="false" />
+      <option name="PREFERRED_AVD" value="" />
+      <Java />
+      <Profilers>
+        <option name="ENABLE_ADVANCED_PROFILING" value="true" />
+        <option name="GAPID_ENABLED" value="false" />
+        <option name="GAPID_DISABLE_PCS" value="false" />
+        <option name="SUPPORT_LIB_ENABLED" value="true" />
+        <option name="INSTRUMENTATION_ENABLED" value="true" />
+      </Profilers>
+      <option name="DEEP_LINK" value="" />
+      <option name="ACTIVITY_CLASS" value="" />
+      <method />
+    </configuration>
+    <configuration default="true" type="AndroidTestRunConfigurationType" factoryName="Android Tests">
+      <module name="" />
+      <option name="TESTING_TYPE" value="0" />
+      <option name="INSTRUMENTATION_RUNNER_CLASS" value="" />
+      <option name="METHOD_NAME" value="" />
+      <option name="CLASS_NAME" value="" />
+      <option name="PACKAGE_NAME" value="" />
+      <option name="EXTRA_OPTIONS" value="" />
+      <option name="TARGET_SELECTION_MODE" value="SHOW_DIALOG" />
+      <option name="PREFERRED_AVD" value="" />
+      <option name="CLEAR_LOGCAT" value="false" />
+      <option name="SHOW_LOGCAT_AUTOMATICALLY" value="false" />
+      <option name="SKIP_NOOP_APK_INSTALLATIONS" value="true" />
+      <option name="FORCE_STOP_RUNNING_APP" value="true" />
+      <option name="DEBUGGER_TYPE" value="Java" />
+      <option name="USE_LAST_SELECTED_DEVICE" value="false" />
+      <option name="PREFERRED_AVD" value="" />
+      <Java />
+      <Profilers>
+        <option name="ENABLE_ADVANCED_PROFILING" value="true" />
+        <option name="GAPID_ENABLED" value="false" />
+        <option name="GAPID_DISABLE_PCS" value="false" />
+        <option name="SUPPORT_LIB_ENABLED" value="true" />
+        <option name="INSTRUMENTATION_ENABLED" value="true" />
+      </Profilers>
+      <method />
+    </configuration>
+    <configuration default="true" type="Applet" factoryName="Applet">
+      <option name="HTML_USED" value="false" />
+      <option name="WIDTH" value="400" />
+      <option name="HEIGHT" value="300" />
+      <option name="POLICY_FILE" value="$APPLICATION_HOME_DIR$/bin/appletviewer.policy" />
+      <module />
+      <method />
+    </configuration>
+    <configuration default="true" type="Application" factoryName="Application">
+      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
+      <option name="MAIN_CLASS_NAME" />
+      <option name="VM_PARAMETERS" />
+      <option name="PROGRAM_PARAMETERS" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
+      <option name="ENABLE_SWING_INSPECTOR" value="false" />
+      <option name="ENV_VARIABLES" />
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <module name="" />
+      <envs />
+      <method />
+    </configuration>
+    <configuration default="true" type="GradleRunConfiguration" factoryName="Gradle">
+      <ExternalSystemSettings>
+        <option name="executionName" />
+        <option name="externalProjectPath" />
+        <option name="externalSystemIdString" value="GRADLE" />
+        <option name="scriptParameters" />
+        <option name="taskDescriptions">
+          <list />
+        </option>
+        <option name="taskNames">
+          <list />
+        </option>
+        <option name="vmOptions" />
+      </ExternalSystemSettings>
+      <method />
+    </configuration>
+    <configuration default="true" type="JUnit" factoryName="JUnit">
+      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
+      <module name="" />
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
+      <option name="PACKAGE_NAME" />
+      <option name="MAIN_CLASS_NAME" />
+      <option name="METHOD_NAME" />
+      <option name="TEST_OBJECT" value="class" />
+      <option name="VM_PARAMETERS" value="-ea" />
+      <option name="PARAMETERS" />
+      <option name="WORKING_DIRECTORY" value="$MODULE_DIR$" />
+      <option name="ENV_VARIABLES" />
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <option name="TEST_SEARCH_SCOPE">
+        <value defaultName="singleModule" />
+      </option>
+      <envs />
+      <patterns />
+      <method />
+    </configuration>
+    <configuration default="true" type="JarApplication" factoryName="JAR Application">
+      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
+      <envs />
+      <method />
+    </configuration>
+    <configuration default="true" type="Java Scratch" factoryName="Java Scratch">
+      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
+      <option name="SCRATCH_FILE_ID" value="0" />
+      <option name="MAIN_CLASS_NAME" />
+      <option name="VM_PARAMETERS" />
+      <option name="PROGRAM_PARAMETERS" />
+      <option name="WORKING_DIRECTORY" />
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
+      <option name="ENABLE_SWING_INSPECTOR" value="false" />
+      <option name="ENV_VARIABLES" />
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <module name="" />
+      <envs />
+      <method />
+    </configuration>
+    <configuration default="true" type="JetRunConfigurationType" factoryName="Kotlin">
+      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
+      <option name="MAIN_CLASS_NAME" />
+      <option name="VM_PARAMETERS" />
+      <option name="PROGRAM_PARAMETERS" />
+      <option name="WORKING_DIRECTORY" />
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <module name="scientific_calculator" />
+      <envs />
+      <method />
+    </configuration>
+    <configuration default="true" type="KotlinStandaloneScriptRunConfigurationType" factoryName="Kotlin script">
+      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
+      <option name="filePath" />
+      <option name="vmParameters" />
+      <option name="alternativeJrePath" />
+      <option name="programParameters" />
+      <option name="passParentEnvs" value="true" />
+      <option name="workingDirectory" />
+      <option name="isAlternativeJrePathEnabled" value="false" />
+      <envs />
+      <method />
+    </configuration>
+    <configuration default="true" type="Remote" factoryName="Remote">
+      <option name="USE_SOCKET_TRANSPORT" value="true" />
+      <option name="SERVER_MODE" value="false" />
+      <option name="SHMEM_ADDRESS" value="javadebug" />
+      <option name="HOST" value="localhost" />
+      <option name="PORT" value="5005" />
+      <method />
+    </configuration>
+    <configuration default="true" type="TestNG" factoryName="TestNG">
+      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
+      <module name="" />
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
+      <option name="SUITE_NAME" />
+      <option name="PACKAGE_NAME" />
+      <option name="MAIN_CLASS_NAME" />
+      <option name="METHOD_NAME" />
+      <option name="GROUP_NAME" />
+      <option name="TEST_OBJECT" value="CLASS" />
+      <option name="VM_PARAMETERS" value="-ea" />
+      <option name="PARAMETERS" />
+      <option name="WORKING_DIRECTORY" value="$MODULE_DIR$" />
+      <option name="OUTPUT_DIRECTORY" />
+      <option name="ANNOTATION_TYPE" />
+      <option name="ENV_VARIABLES" />
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <option name="TEST_SEARCH_SCOPE">
+        <value defaultName="singleModule" />
+      </option>
+      <option name="USE_DEFAULT_REPORTERS" value="false" />
+      <option name="PROPERTIES_FILE" />
+      <envs />
+      <properties />
+      <listeners />
+      <method />
+    </configuration>
+    <configuration default="true" type="executeSpecs" factoryName="Gauge Execution">
+      <setting name="environment" value="" />
+      <setting name="specsToExecute" value="" />
+      <setting name="tags" value="" />
+      <setting name="parallelNodes" value="" />
+      <setting name="execInParallel" value="false" />
+      <setting name="programParameters" value="" />
+      <setting name="workingDirectory" value="" />
+      <setting name="moduleName" value="" />
+      <envMap />
+      <setting name="rowsRange" value="" />
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+  </component>
+  <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/pom.xml">
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+    </entry>
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+          <folding />
+        </state>
+      </provider>
+    </entry>
+  </component>
+</project>

pom.xml

+<?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>com.zipcodewilmington</groupId>
+    <artifactId>scientific_calculator</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+
+</project>

scientific_calculator.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_5">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/main/java/com/zipcodewilmington/scientificcalculator/Console.java

+package com.zipcodewilmington.scientificcalculator;
+
+import java.util.Scanner;
+
+/**
+ * Created by leon on 2/9/18.
+ */
+public class Console {
+
+    public static void print(String output, Object... args) {
+        System.out.printf(output, args);
+    }
+
+    public static void println(String output, Object... args) {
+        print(output + "\n", args);
+    }
+
+    public static String getStringInput(String prompt) {
+        Scanner scanner = new Scanner(System.in);
+        println(prompt);
+        String userInput = scanner.nextLine();
+        return userInput;
+    }
+
+    public static Integer getIntegerInput(String prompt) {
+        return null;
+    }
+
+    public static Double getDoubleInput(String prompt) {
+        return null;
+    }
+}

src/main/java/com/zipcodewilmington/scientificcalculator/MainApplication.java

+package com.zipcodewilmington.scientificcalculator;
+
+/**
+ * Created by leon on 2/9/18.
+ */
+public class MainApplication {
+    public static void main(String[] args) {
+        Console.println("Welcome to my calculator!");
+        String s = Console.getStringInput("Enter a string");
+        Integer i = Console.getIntegerInput("Enter an integer");
+        Double d = Console.getDoubleInput("Enter a double.");
+
+        Console.println("The user input %s as a string", s);
+        Console.println("The user input %s as a integer", i);
+        Console.println("The user input %s as a d", d);
+    }
+}