Why is my animation not working on key press

[SimonClintonIv]

These are the following steps I have taken to make animation to play in unity.

1. Added animation controller to the object that I want to animate.

2. Below is the code that I have written for using a particular animation.

   using UnityEngine;
   using System.Collections;

   public class PlayerAnimation : MonoBehaviour {
   private Animator anim;
   // Use this for initialization
   void Start () {
   anim = GetComponent ();
   }

    // Update is called once per frame
    void Update () {
    	if (Input.GetKey (KeyCode.A))
    	{
    		anim.Play ("Action2", -1, 0f);
    	}
    }
   

   }

What else should I do to animate the game object properly.

[LMan]

Use the animator variables to set up transitions in the controller, and then manipulate those variables through script using setbool and the like.