Shared Preferences in Android

SharedPreferences.java

//There are two Activity ..First one takes the username and password from the user and saves in a XML file named "MyData"
// The next Activity loads the username and password in the textview in that activity


//ACTIVTY ONEEEEEEEEEEEEEEEEEEEEEE
package com.example.sharedpreferenceproject;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    SharedPreferences preferences;
    SharedPreferences.Editor editor;
    Button save,next;
    EditText user,pass;
    TextView userview,passview;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        preferences=getSharedPreferences("MyData",MODE_PRIVATE);
        editor = preferences.edit();
        userview = (TextView)findViewById(R.id.userView);
        passview=(TextView)findViewById(R.id.passView);
        save=(Button)findViewById(R.id.saveButton);
        next=(Button)findViewById(R.id.nextButton);
        user=(EditText)findViewById(R.id.editText1);
        pass=(EditText)findViewById(R.id.editText2);
    }
    public void save(View v){
       editor.putString("name",user.getText().toString());
       editor.putString("password",pass.getText().toString());
       editor.commit();
    }
    public void next(View v){
        Intent intent = new Intent(this,Main2Activity.class);
        startActivity(intent);
    }
}
//ACTIVTY TWOOOOOOOOOOOOOOOOOOOOOO

package com.example.sharedpreferenceproject;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class Main2Activity extends AppCompatActivity {
    public static final String DEFAULT="N/A";
    SharedPreferences preferences;
    TextView user,pass;
    Button load,prev;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        user  = (TextView)findViewById(R.id.userView2);
        pass = (TextView)findViewById(R.id.passView2);
        preferences = getSharedPreferences("MyData",MODE_PRIVATE);

    }
    public void load(View v){
        String name  = preferences.getString("name",DEFAULT);
        String password = preferences.getString("password",DEFAULT);
        if(name.equals(DEFAULT) || password.equals(DEFAULT)){
            Toast.makeText(this,"No data was Found",Toast.LENGTH_SHORT).show();
        }
        else{
            user.setText(name);
            pass.setText(password);
        }
    }
    public void prev(View v){
        Intent intent = new Intent(this,MainActivity.class);
        startActivity(intent);
    }
}