Preferences In Android

package com.example.preferencedemo;

import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
  private SharedPreferences settings;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    if (settings == null) {
      settings = getSharedPreferences("MY_PREFERENCE", MODE_PRIVATE);
    }

    //*****************************************************************
    //  CREATE DATA IN PREFERENCE
    //*****************************************************************
    SharedPreferences.Editor preference_editor = settings.edit();

    preference_editor.putString("USER_NAME", "karan");
    preference_editor.putString("PASSWORD", "karan");

    preference_editor.commit();
    //*****************************************************************
    //  DISPLAY VALUE IN PREFERENCES
    //*****************************************************************
    Log.v("PREFERENCE_USER_NAME", settings.getString("USER_NAME", ""));
    Log.v("PREFERENCE_PASSWORD", settings.getString("PASSWORD", ""));

  }
}

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