Add files via upload

Author: angyxajil

homework02/bin/hw02/Main.class

@@ -0,0 +1,117 @@
+package hw02;
+
+import java.util.Scanner;
+
+/**
+ * Creates a nice console menu which allows the user to do the following: Choose
+ * an image to manipulate, change the image to sepia, greyscale, or negative,
+ * and save the new image with a user chosen file name
+ * 
+ * @author angy xajil; CIN: 400304005; CS 2013-05
+ */
+
+public class Main {
+
+	public static void main(String[] args) {
+
+		System.out.println("Which image would you like to manipulate?");
+
+		Scanner scan = new Scanner(System.in);
+
+		String nameOfFile = scan.nextLine();
+
+		/**
+		 * Chosen image input is converted to lower case to ensure file can
+		 * still be used despite the case type (upper, lower, or both)
+		 */
+		nameOfFile.toLowerCase();
+
+		/**
+		 * Validates the given file is of type .ppm. If not, it prints an error
+		 * message on line 74
+		 */
+		if (nameOfFile.endsWith(".ppm")) {
+			
+			System.out.println("You chose " + nameOfFile);
+
+			/**
+			 * The chosen file gets passed to the PPMImage object and is directed
+			 * through a relative path
+			 */
+			PPMImage ppm = new PPMImage("src/ppm_images/" + nameOfFile);
+
+			System.out.println();
+			System.out.println("Would you like to change it to sepia, grayscale,"
+					+ " or negative?");
+
+			/**
+			 * String to hold the user input
+			 */
+			String effect = scan.nextLine();
+
+			/**
+			 * Switch case to to select one effect to be executed. NOTE: user
+			 * input is converted to lower case to ensure the effect chosen
+			 * still gets applied despite the case type (upper, lower, or both)
+			 */
+			switch (effect) {
+
+			case "sepia":
+				effect.toLowerCase();
+				ppm.sepia();
+				break;
+
+			case "grayscale":
+				effect.toLowerCase();
+				ppm.grayscale();
+				break;
+
+			case "negative":
+				effect.toLowerCase();
+				ppm.negative();
+				break;
+				
+			case "none":
+				break;
+				
+			default:
+				System.out.println("Something went wrong, please check your"
+						+ " spelling and try again!");
+				System.exit(0);
+			}
+
+			System.out.print("Enter your new file name: ");
+
+			/**
+			 * String to hold the new file name inputed by the user
+			 */
+			String newFile = scan.nextLine();
+
+			scan.close();
+
+			/**
+			 * Adds the extension type in case the user failed to do so. This also
+			 * helps to ignore other file extension types the user may have used
+			 */
+			if (!newFile.endsWith(".ppm")) {
+				newFile += ".ppm";
+			}
+
+			ppm.writeImage(newFile);
+
+			System.out.println();
+			System.out.println("Your new file " + newFile + " has been created");
+
+		} else {
+			System.out.println("The image you have entered could not be found."
+					+ "\nMissing '.ppm' extension.");
+		}
+
+		/**
+		 * exits the program
+		 */
+		System.exit(0);
+
+	}
+
+}