Step 1: Download any JAR file for your Project.![enter image description here](https://i.stack.imgur.com/JNajB.png)
Step 2: Copy .jar file and past in libs folder.
![enter image description here](https://i.stack.imgur.com/j2Hzd.png)
Step 3: Click on File > Project Structure >Select app > Dependencies
![enter image description here](https://i.stack.imgur.com/sYc6w.png)
Step 4:
![enter image description here](https://i.stack.imgur.com/EgWZL.png)
Step 5:
![enter image description here](https://i.stack.imgur.com/u3IyE.png)
Step 6: After click Ok button then we can see the Dependencies add like this way:
![enter image description here](https://i.stack.imgur.com/IJt5H.png)