Finished Assignment 10

Assignment10/src/SchoolLottery.java

@@ -0,0 +1,43 @@
+import java.util.*;
+
+public class SchoolLottery{
+	private ArrayList<String> entries;	// holds Student references
+	public SchoolLottery(){
+		entries = new ArrayList<>();
+	}
+
+	public void addStudents(){
+		// prompts for student names
+		// adds students to entries list
+		// allow duplicate entries
+		Scanner input = new Scanner(System.in);
+		int studentNum = 0;
+		System.out.println("Please Enter to end input");
+		System.out.print("Name" + ++studentNum + ": ");
+		String name = input.nextLine();
+		while (!name.equals("")){			// signals end of data
+			entries.add(name);
+			System.out.println(name + " entered in the lottery.");
+			System.out.print("\nName" + ++studentNum + ": ");
+			name = input.nextLine();
+		}
+		pickWinner();
+	}
+
+	public void pickWinner(){
+		// chooses a random entry and displays winners name
+		int numEntries = entries.size();	// size of ArrayList
+		if(numEntries == 0)
+			System.out.println("*** No participants ***");
+		else{
+			Random random = new Random();
+			String winner = entries.get(random.nextInt(numEntries));
+			System.out.print("\n*** The winner is " + winner + " ***");
+		}
+	}
+
+	public static void main(String[] args){
+		SchoolLottery lottery = new SchoolLottery();
+		lottery.addStudents();
+	}
+}

Assignment10/src/SchoolLotteryFromFile.java

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+import java.io.File;
+import java.io.FileNotFoundException;
+import java.util.ArrayList;
+import java.util.Random;
+import java.util.Scanner;
+
+public class SchoolLotteryFromFile{
+	private ArrayList<String> entries;	// holds Student references
+	public SchoolLotteryFromFile(){
+		entries = new ArrayList<>();
+	}
+
+	public void addStudents(String name){
+		if(entries.contains(name)) {
+			System.out.println("Duplicate Detected!, You think you're so smart? "+name);
+			return;
+		}
+		System.out.println(name + " entered in the lottery.");
+		entries.add(name);
+	}
+
+	public void pickWinner(){
+		// chooses a random entry and displays winners name
+		int numEntries = entries.size();	// size of ArrayList
+		if(numEntries == 0)
+			System.out.println("*** No participants ***");
+		else{
+			Random random = new Random();
+			String winner = entries.get(random.nextInt(numEntries));
+			System.out.print("\n*** The winner is " + winner + " ***");
+		}
+	}
+
+	public static void main(String[] args){
+		SchoolLotteryFromFile lottery = new SchoolLotteryFromFile();
+		Scanner sc;
+		try {
+			sc = new Scanner(new File("studentList.txt"));
+			while(sc.hasNextLine())lottery.addStudents(sc.nextLine());
+			lottery.pickWinner();
+		} catch (FileNotFoundException e) {
+			e.printStackTrace();
+		}
+		
+	}
+}