Read NFC tag from Unity3d android

I have been trying to read NFC tag from Unity3d with a very little knowledge of JAVA. But I am able to check weather NFC is enable in android or not. Heres my code for Unity Side.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 public class UnitySide : MonoBehaviour {
     private AndroidJavaObject toastExample = null;
     private AndroidJavaObject activityContext = null;
 
     void Start() {
         if(toastExample == null) {
             using(AndroidJavaClass activityClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer")) {
                 activityContext = activityClass.GetStatic<AndroidJavaObject>("currentActivity");
             }
 
             using(AndroidJavaClass pluginClass = new AndroidJavaClass("com.rsi.nfc.reader")) {
                 if(pluginClass != null) {
                     toastExample = pluginClass.CallStatic<AndroidJavaObject>("instance");
                     toastExample.Call("setContext", activityContext);
                     activityContext.Call("runOnUiThread", new AndroidJavaRunnable(() => {
                         toastExample.Call("showMessage", "This is a Toast message");
                     }));
                 }
             }
         }
     }
 
 
     public void ShowToastMessage(string msg)
     {
 
         using(AndroidJavaClass pluginClass = new AndroidJavaClass("com.rsi.nfc.reader")) {
             if(pluginClass != null) {
                 toastExample = pluginClass.CallStatic<AndroidJavaObject>("instance");
                 toastExample.Call("setContext", activityContext);
                 activityContext.Call("runOnUiThread", new AndroidJavaRunnable(() => {
                     toastExample.Call("showMessage", msg);
                 }));
             }
         }
     }
 
     public void ShowToastMessage2(string msg)
     {
 
         using(AndroidJavaClass pluginClass = new AndroidJavaClass("com.rsi.nfc.reader")) {
             if(pluginClass != null) {
                 toastExample = pluginClass.CallStatic<AndroidJavaObject>("instance");
                 toastExample.Call("setContext", activityContext);
                 activityContext.Call("runOnUiThread", new AndroidJavaRunnable(() => {
                     toastExample.Call("showMessage2", msg);
                 }));
             }
         }
     }
 
 
 
 }

This Is my Java Code which I make jar and import in Unity3d

 package com.rsi.nfc.reader;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
 import android.content.Context;
 import android.widget.Toast;
 import android.nfc.NfcAdapter;
 
 import android.os.Parcelable;
 import android.nfc.tech.MifareUltralight;
 
 public class MainActivity  {
 
     private Context context;
     private NfcAdapter nfcAdapter;
 
 
 
     public void setContext(Context context) {
         this.context = context;
     }
 
     public void showMessage(String message) {
       nfcAdapter = nfcAdapter.getDefaultAdapter(this.context) ;
       if(nfcAdapter.isEnabled())
       {
         Toast.makeText(this.context,"Adapter is Enabled ", Toast.LENGTH_SHORT).show();
       }
       else
       {
         Toast.makeText(this.context,"Adapter is not Enabled ", Toast.LENGTH_SHORT).show();
       }
     }
     public void showMessage2(String message) {
 
         Toast.makeText(this.context,message, Toast.LENGTH_SHORT).show();
       }
 
       protected void onNewIntent(Intent intent)
       {
           handleSendText(intent);
       }
 
       void handleSendText(Intent intent)
 {
     Log.v("VM","intent : " +  intent);
     String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
     if (sharedText != null)
     {
         Log.v("VM","Handling Text : " +  sharedText);
         // Update UI to reflect text being shared
         UnityPlayer.UnitySendMessage("JavaCallback", "HandleText", sharedText);
     }
 }
 
 }
 

Can anyone help me and tell me that how I will be going to read the TAG with intent.