SharedPreferences

 XML

Your Code Here

JAVA

loaddata.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {

        SharedPreferences pref = getSharedPreferences("mypref", MODE_PRIVATE);
        String n1 = pref.getString("name", "");
        String n2 = pref.getString("place", "");
        int a = pref.getInt("rollno", 0);

        name.setText(n1);
        place.setText(n2);
        rollno.setText(String.valueOf(a));

    }
});

submit.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {

        if (name.getText().toString().equals("") || place.getText().toString().equals("") || rollno.getText().toString().equals("")) {

            Toast.makeText(SharedpreferencesActivity.this, "Fields Required", Toast.LENGTH_SHORT).show();

        } else {

            String mname = name.getText().toString();
            String mplace = place.getText().toString();
            String mrollno = rollno.getText().toString();
            int finalroll = Integer.parseInt(mrollno);

            SharedPreferences pref = getSharedPreferences("mypref", MODE_PRIVATE);
            SharedPreferences.Editor myEdit = pref.edit();

            myEdit.putString("name", mname);
            myEdit.putString("place", mplace);
            myEdit.putInt("rollno", finalroll);
            myEdit.apply();
        }
    }
});

OUTPUT