Java Native Interface

i have 2 programs (java and c ) the java is pdf reader ,, the c program used to lock keyboard and mouse and freeze screen

what i want is to make one program (1 jar file )that when i open it will

1-freeze the screen for 10 seconds (the keyboard and mouse is not working in that time ) (c code have that methods in it)

2-for another 5 seconds the screen freezes but the keyboard are working (freeze screen only)

3-after those 15 seconds the pdf opens and the book is loaded automatically

using java native interface

sources attached

there is error in balance ,,,,the balance for this project is only 30 $

Skills: C Programming, Java

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Project ID: #1155977

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