Running shell commands on Android using Runtime.getRuntime

I am working on a device admin app (has been signed by the manufacturer). I am using it to install other apps using the below adb shell command for android 9 :-

cat /sdcard/Download/myfolder/newapp.apk | pm install -S 1528293

and I am just passing it like this:-

String command = "cat /sdcard/Download/myfolder/newapp.apk | pm install -S 1528293"
Runtime.getRuntime().exec(command);

But I get the error "cat unknown option S ".

The same command works perfectly fine when I run it from adb shell. Don't know what I am doing wrong and could use some help.

EDIT 1:- I tried running the command like below:-

String[] commandInstall = {
                "/system/bin/sh",
                "-c",
                "cat /sdcard/Download/myfolder/newapp.apk | pm install -S 1528293"
        };
Process process = Runtime.getRuntime().exec(commandInstall);

But now I get the error:-

ava.lang.SecurityException: Reverse mode only supported from shell
    at com.android.server.pm.PackageInstallerSession.doWriteInternal(PackageInstallerSession.java:679)
    at com.android.server.pm.PackageInstallerSession.write(PackageInstallerSession.java:612)
    at android.content.pm.PackageInstaller$Session.write(PackageInstaller.java:852)
    at com.android.server.pm.PackageManagerShellCommand.doWriteSplit(PackageManagerShellCommand.java:2447)
    at com.android.server.pm.PackageManagerShellCommand.runInstall(PackageManagerShellCommand.java:915)
    at com.android.server.pm.PackageManagerShellCommand.onCommand(PackageManagerShellCommand.java:158)
    at android.os.ShellCommand.exec(ShellCommand.java:103)
    at com.android.server.pm.PackageManagerService.onShellCommand(PackageManagerService.java:21330)
    at android.os.Binder.shellCommand(Binder.java:634)
    at android.os.Binder.onTransact(Binder.java:532)
    at android.content.pm.IPackageManager$Stub.onTransact(IPackageManager.java:2821)
    at com.android.server.pm.PackageManagerService.onTransact(PackageManagerService.java:3856)
    at android.os.Binder.execTransact(Binder.java:731)

Edit 2:- Prior to android 9, I could just do the below for installing apps:-

Runtime.getRuntime().exec("pm install -r app.apk");

from Running shell commands on Android using Runtime.getRuntime