How to save file from user data in internal storage android studio

Question

1I am new to Android Studio and have gone through a ton of tutorials. I add a share option in my share app for users and want also user choice to save files in internal storage. So please tell me how I can save the file onclick. Hopefully, someone should help me with this Thanks.

My Java Adapter Class

        holder.cardView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(context, "URL : "+FileProvider.getUriForFile(
                        context,BuildConfig.APPLICATION_ID + ".provider", new File(apps.get(position).getApkPath())), Toast.LENGTH_SHORT).show();
                Intent shareAPKIntent = new Intent();
                shareAPKIntent.setAction(Intent.ACTION_SEND);
                shareAPKIntent.putExtra(Intent.EXTRA_STREAM, FileProvider.getUriForFile(
                        context,BuildConfig.APPLICATION_ID + ".provider", new File(apps.get(position).getApkPath())
                ));
                shareAPKIntent.addFlags(Intent.FLAG_GRANT_PREFIX_URI_PERMISSION);
                shareAPKIntent.setType("application/vnd.android.package-archive");
                context.startActivity(Intent.createChooser(shareAPKIntent,"Share APK"));
            }
        });

    }