Clarification You will decide what your input files look like and you will write the code to read your input files. You need to be able to handle add, modify, and remove, but it can be more. In phase 4, there will be a standard input format. Until then, enjoy your freedom. The output files should be easily readable by humans You should at least have two types of output files: A member's list file that 15sts all the information of all members, and a log file that logs all commands executed such as successfully added a new member, failed to modify a member because ID does not exist You might get some ideas from this project if you' re not sure how to implement the file output. (2) Phase 2 At this stage all menbers should be stored in an Arraylist structure that you designed. This structure should be able to handle the adding, modifying, and removing commands that you implemented in the first phase. (2) Phase 3 A separate structure only to store pairs of cUNY ID and in house index. All member related operations should be verified first by this structure to see if the ID exist in our database. (2) Phase Update the Input file format to standard json style and use stack structure to parse the comands . Note that realistically, the json coemands would be coming in a stream (such as over network), so it must be read char-by-char. You cannot read ison 1ine by line or include non-standard characters to indicate the separation of commands Clarification You will decide what your input files look like and you will write the code to read your input files. You need to be able to handle add, modify, and remove, but it can be more. In phase 4, there will be a standard input format. Until then, enjoy your freedom. The output files should be easily readable by humans You should at least have two types of output files: A member's list file that 15sts all the information of all members, and a log file that logs all commands executed such as successfully added a new member, failed to modify a member because ID does not exist You might get some ideas from this project if you' re not sure how to implement the file output. (2) Phase 2 At this stage all menbers should be stored in an Arraylist structure that you designed. This structure should be able to handle the adding, modifying, and removing commands that you implemented in the first phase. (2) Phase 3 A separate structure only to store pairs of cUNY ID and in house index. All member related operations should be verified first by this structure to see if the ID exist in our database. (2) Phase Update the Input file format to standard json style and use stack structure to parse the comands . Note that realistically, the json coemands would be coming in a stream (such as over network), so it must be read char-by-char. You cannot read ison 1ine by line or include non-standard characters to indicate the separation of commands