This needs to be in Java.

I need a method for an LFU algorithm. The user will specify how many frames and input an entire reference string at once. No need to ask for page size and input the reference string one character at a time. Just pass frames and full reference string into a method then simulate the step by step execution of an LFU algorithm using that reference string. Exact specs:

The application must simulate the execution of each of these algorithms on a hypothetical computer having only N physical frames (numbered from 0 to N-1, N<8), assuming that the single process that is running has a virtual memory of ten frames (numbered from 0 to 9). The number N should be a number provided in the command line as an argument. The algorithms will be simulated based on a reference string (a sequence of pages that are to be accessed) that will be either read from the keyboard or randomly generated.

7 Simulate LFU Will simulate the step by step execution of the LFU algorithm using the stored reference string; if there is no reference string stored yet, an error message must be displayed. The user will press a key after each step of the simulation to continue the simulation. The total number of faults will be displayed at the end of the simulation.