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so in this discussion we will be discussing about the register and login in Java and we will have the text file records the text as our database so we will need to import the buffer leader buffered writer file reader file writer i o exception for the exceptions scanner this is the scanner for the user input reader and writer is for reading the text file and writing the text file especially in um register so in our class we declare we name the Java file as usual user authentication as we authenticate the user from login so in the void main we will be having our scanner to get the data from our keyboard then we will have done while loop so for us to choose an option whether to log in register and talk except from the program so next is we will be using the switch for our choice so case one will be register function okay store will be your login function and case 3 will be exiting the program so our default will be invalid Choice please try again so in our case one we need to register so
