如何从json数组中永久删除json对象？

Question

我有一个显示用户列表的列表视图。我想要的是，当用户单击任何项​​目时，它应该从json数组中删除。下面的代码运行正常，但是当再次启动该应用程序时，它将再次显示所有用户。

private void showStudentInfo(final List<StudentDetails> studentDetails) {

    if(studentDetails != null) {
            final ArrayList<Map<String, Object>> itemDataList = new ArrayList<>();

            int size = studentDetails.size();

            for(int i=0; i<size; i++)
            {
                StudentDetails student = studentDetails.get(i);

                Map<String,Object> listItemMap = new HashMap<>();
                listItemMap.put("id",  student.getId());
                listItemMap.put("name", student.getName());
                itemDataList.add(listItemMap);
            }

            final SimpleAdapter simpleAdapter = new SimpleAdapter(this,itemDataList,android.R.layout.simple_list_item_2,
                new String[]{"id","name"},new int[]{android.R.id.text1,android.R.id.text2});


            studentListView.setAdapter(simpleAdapter);
            studentListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

                @Override
                public void onItemClick(final AdapterView<?> parent, View view, final int position, long id) {

                    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);

                    alertDialogBuilder.setPositiveButton("View", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            Toast.makeText(MainActivity.this, selectedItem, Toast.LENGTH_SHORT).show();
                            Intent intent = new Intent(MainActivity.this, DetailsActivity.class);
                            intent.putExtra("id",studentDetails.get(position).getId());
                            intent.putExtra("name",studentDetails.get(position).getName());
                            intent.putExtra("email",studentDetails.get(position).getEmail());
                            intent.putExtra("phone",studentDetails.get(position).getPhone());
                            intent.putExtra("address",studentDetails.get(position).getAddresS());
                            startActivity(intent);
                        }
                    });

                    alertDialogBuilder.setNegativeButton("Delete", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            Toast.makeText(MainActivity.this, "Data deleted", Toast.LENGTH_SHORT).show();
                            itemDataList.remove(position);
                            simpleAdapter.notifyDataSetChanged();
                        }
                    });

                    AlertDialog alertDialog = alertDialogBuilder.create();
                    alertDialog.show();
                }
            });

    }