Open Jdk6 Java Web Project in IDEA

Download 2021.3.3 for Jdk6

Choose Version 2021.3.3 in the Offical Download page.

Setting SDK

1. Open Jdk6 project.
2. Press Ctrl+Alt+Shift+S to open Project Setting:
   
3. Use the + button to Add SDK:
   
4. Navigate to your jdk6 folder and Press OK:
   
5. Choose project’s Language level to SDK default:
   

Install Tomcat6

1. Ensure Tomcat and TomcatEE plugin is installed.
   Press Ctrl+Shift+A and type in Plugins ↵ to open Setting.
   

2. Choose Run from menu bar, and click Edit Configuration
   

3. Add new configuration from left upper + button, and click Local below Tomcat Server:
   

4. Choose Tomcat6 folder like we did in NetBeans:
   

Dependency

Add necessary libraries to the project configuration.

1. Press Ctrl+Alt+Shift+S to open Project Setting.
   
2. Choose the library, and click OK.
   
3. IDEA would popup to ask to set this library to the module. Choose OK.
   library:
   

Set the module

Before we deploy to Tomcat, we need to: Add web module.

1. Press Ctrl+Alt+Shift+S to open Project Setting.
2. Click + to add Web module in the Mudules Section:
   And there would a warning:
   By clicking the Create Artificat, IDEA would create Facet and Artificat for us.
   Facet:
   Artifact:
   By clicking the Fix button, IDEA would popup to ask how to import the library:
   Choose Add all missing dependencies…:
   

Deploy to Tomcat

Click the menubar: Run -> Edit Configuration, and click Deployment tab in the configurations window: By clicking the Artifact, IDEA whould include the artifact which we just created.
Remember to erase the string: _Web_exploded in Applcation context field.

From now on, we could start tomcat with our project.

Packing war

1. Press Ctrl+Alt+Shift+S to open Project Setting.
   Adding Web Application Archive:
   
2. PmbMgr:war is the archive artifact:
3. Menubar: Build -> Build Artifacts…:
   Choose PmbMgr:web -> Build:
   

Hot Swap/Load

1. Menubar: Run -> Edit Configuration
   On ‘Update’ action: choose Update classes and resources
2. Start tomcat in DEBUG MODE