I have deeply analysed my possibilities and I have came to The following most realistic programmers solution. I do not have enough experience to recode open JDK so it would run directly from Android with no need to use Busybox or special .so libraryes, which Termux uses. Even if I would compile PPCJVM which would generate .class files, it is too little for my goal. Since I need to use. Jasmin Java Assembler, which need JRE or somilar Java environment. Termux has offered Open JDK but The running app have been too unstable, it has allocated too much CPU resources so it could even cause colt phone or Android device reboot. As A contrast, Termux, Proot and running Debian, Ubuntu or similar matured Linux distro is giving Me much more chances. Why? Because Proot allocates system resources very smartly and it is even possible to build very complex Gradle based projects, which require complex communication with running Java virtual machine. OpenJDK is running smoothly there een for several minutes. And I would had to base my attempts to Pandroid bundle. Because Mr Swianovicz and Horiakus have allready developed all complex tasks including Pascal units development, finding how to build Java classes by using Apache ANT. I would never been able to collect so much information from Internet and they have also introduced functioning approach for calling .so with no need to use JNI technique. They have also introduced Pascal source to work with Java ctivity such as main activity. Android API calls support, etc. So what can I do for now?