Project

import java.util.Scanner;public class UserActions implements UserInterface{		Scanner keyboard = new Scanner(System.in);	//ReportBuilder theRock = new ReportBuilder();		public void consoleInteraction(ReportBuilder theRock){		{		System.out.println("Enter M or m to see listings by major.");		System.out.println("Enter D or d to see listings by dormitory.");		System.out.println("Enter I or i to see a listing about an individual student.");		System.out.println("Enter Q or q to quit.");		char choice;	choice = keyboard.nextLine().charAt(0);	switch (choice) {	case 'M':  case 'm':		displayByMajor( theRock.major, theRock.binaryStudentNumber, theRock.lastName, theRock.firstName, theRock.numberOfCredits, theRock.gpa);		break;	case 'D': case 'd':		displayByDorm(theRock.major, theRock.binaryStudentNumber, theRock.lastName, theRock.firstName, theRock.age, theRock.dorm);		break;	case 'I':  case 'i':		displayByIndividual(theRock.textStudentNumber, theRock.firstName, theRock.lastName, theRock.dorm, theRock.major, theRock.age, theRock.numberOfCredits, theRock.gpa);		break;	case 'Q': case 'q':		System.out.println("Goodbye.");		System.exit(0);	default:		System.out.println("Invalid choice.");		System.exit(0);	}	}	}public void displayByMajor(String[] major, int[] textStudentNumber, String[] lastName, String[] firstName, short[] numberOfCredits, float[] gpa) {	System.out.println("Which major do you want to see listings for?");	String majorSelection = keyboard.next();			if(majorSelection.equalsIgnoreCase("all"))	{		displayAll(theRock.major);	}	for (int count = 0; count < major.length; count++)	{				if(majorSelection.equalsIgnoreCase(theRock.major[count]))		{			System.out.printf("%s  %s %s   %d    %4.2f\n", textStudentNumber[count],  			theRock.lastName[count], theRock.firstName[count], numberOfCredits[count], gpa[count]);		}			}	}public void displayByDorm(String[] major, int[] textStudentNumber, String[] lastName, String[] firstName, short[] age, String[] dorm) {	System.out.println("Which dorm do you want to see listings for?");	String dormSelection = keyboard.next();				if(dormSelection.equalsIgnoreCase("all"))		{			displayAll(theRock.dorm);		}		for (int count = 0; count < dorm.length; count++)		{						if (dormSelection.equalsIgnoreCase(theRock.dorm[count]))		{			System.out.println(textStudentNumber[count]); 			//theRock.lastName[count], theRock.firstName[count], theRock.age[count], theRock.major[count]);		}			}}		public void displayAll(String[] major) {		String[] majors = new String[20];		int[] counts = new int[20];		boolean exists = false;		int majorsSoFar = 0;		for(int count = 0; count < 120; count++)				{			for (int trackCount = 0; trackCount < majors.length; trackCount++)			{				if (major[count].equalsIgnoreCase(majors[trackCount]))				{					exists = true;					counts[trackCount] = (counts[trackCount]) + 1; 					break;				}				exists = false;			}			if (!exists)				{ 					majors[majorsSoFar] = major[count];					counts[majorsSoFar] = 1; 					majorsSoFar++;									}			}		for (int track = 0; track < majorsSoFar; track++)		{			System.out.println(majors[track] + "      " + counts[track] );		}		}public void quit() {	// TODO Auto-generated method stub	}public void displayByIndividual(String[] textStudentNumber, String[] firstName, String[] lastName, String[] dorm, String[] major, short[] age, short[] credits, float[] gpa) {	System.out.println("Which student number do you want to see listings for?");	String studentSelection = keyboard.next();		for (int count = 0; count < dorm.length; count++)	{		if(studentSelection.equalsIgnoreCase(theRock.textStudentNumber[count]))		{			System.out.printf("%s  %s %s   %s   %s %d  %d  %4.2f\n", textStudentNumber[count],  			theRock.lastName[count], theRock.firstName[count], theRock.dorm[count], theRock.major[count], theRock.age[count], theRock.numberOfCredits[count], theRock.gpa[count]);		}			}}public void displayAll() {	// TODO Auto-generated method stub	}		}