How do I get the results of a fetch cycle in java based on an operating system? I am newbie to java I am looking for some advice

Question

How do i get the fetch cycle working if i have to get the instruction address from memory and assign it to some area of ram? I am just starting to learn the language java any suggestions? I want to get the address from the instruction and add the required ram to it I would like to know if i am on the right track.

How do i get the fetch cycle working if i have to get the instruction address from memory and assign it to some area of ram? I am just starting to learn the language java any suggestions? I want to get the address from the instruction and add the required ram to it I would like to know if i am on the right track.

 public int fetch(){
        program_counter =0;

        memory_address= 00000011100;

        instruction_register = 000110001;








        
        
        
        System.out.println("Processor is now fetching..");
        return 1;
    }