Uploading all Java Projects
parent
2feac09422
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d09641f062
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import java.util.Scanner;
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public class SimpleArrays {
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public static void main(String[] args) {
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final int LENGTH = 9;
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int[] values = new int[LENGTH];
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int currentSize = 0;
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//Read Inputs
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System.out.println("Please Enter Values: \nPress Q To Quit");
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Scanner in = new Scanner(System.in);
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while (in.hasNextInt() && currentSize < values.length) {
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values[currentSize] = in.nextInt();
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currentSize++;
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}
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//Find The Largest Value
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double largest = values[0];
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for (int i = 1; i < currentSize; i++) {
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if (values[i] > largest) {
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largest = values[i];
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}
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}
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System.out.println("\nThe Largest Is: " + largest);
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}
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}
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import java.util.Scanner;
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public class ConditionalStatements {
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public static void main(String[] args) {
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char grade; // Defines Grade As Char
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Scanner in = new Scanner(System.in); // Creates a New Scanner Object
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System.out.print("Please enter your score: ");
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int score = in.nextInt();
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in.close();
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String output = "Your Grade is: ";
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// Checks if Grade is A
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if (score >= 70) {
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grade = 'A';
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System.out.println(output + grade);
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}
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// Checks if Grade is B
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else if (score >= 60) {
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grade = 'B';
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System.out.println(output + grade);
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}
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// Checks if Grade is C
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else if (score >= 50) {
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grade = 'C';
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System.out.println(output + grade);
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}
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// Checks if Grade is D
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else if (score >= 40) {
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grade = 'D';
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System.out.println(output + grade);
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}
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// Checks if Grade is F By Using Else
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else {
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grade = 'F';
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System.out.println(output + grade);
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}
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// Using modulus to determine is number is odd or even
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if (score % 2 == 0) {
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System.out.println("The Number is Even");
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} else if (score % 2 == 1) {
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System.out.println("The Number is Odd");
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}
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}
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}
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import java.util.Scanner;
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public class UsingScanner {
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public static void main(String[] args) {
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Scanner in = new Scanner(System.in);
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// Simply printing out the name
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System.out.println("Please Enter Your Forename");
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String forename = in.next();
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System.out.println("Please Enter Your Surname");
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String surname = in.next();
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System.out.printf("%s %s%n", forename, surname);
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// Read price of the packs
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System.out.print("Please enter the price of a six-pack: ");
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double packPrice = in.nextDouble();
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// Read Can Volume
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System.out.print("Please enter the volume for each can (in ounces): ");
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double canVolume = in.nextDouble();
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// Calculating volume
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final double CANS_PER_PACK = 6;
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double packVolume = canVolume * CANS_PER_PACK;
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double pricePerOunce = packPrice / packVolume;
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System.out.printf("Price per ounce: %8.2f", pricePerOunce);
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}
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}
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import java.time.LocalDateTime;
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import java.time.format.DateTimeFormatter;
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import java.util.Arrays;
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import java.util.Scanner;
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public class WorkingWithStrings {
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public static void main(String[] args) {
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Scanner in = new Scanner(System.in);
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String Info = "Bobby, M, wdjoiwqnoiqfcoiqjdwqjd";
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//split the array using "," as a delimiter
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String[] parts = Info.split(",");
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System.out.println("Using , as a delimiter " + "\n" + Arrays.toString(parts));
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//split the array using "w" as a delimiter
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parts = Info.split("w");
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System.out.println(Arrays.toString(parts));
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//Tokenize the string into words simply by using " "
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String Token = "Tokenize Commence";
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parts = Token.split(" ");
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System.out.println(Arrays.toString(parts));
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//Using a limit on the delimiter
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String Limit = "abdc:psdv:sdvosdv:dfpbkdd";
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parts = Limit.split(":", 2);
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System.out.println("Using : as a delimiter " + Arrays.toString(parts));
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//Split numbers
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String number = "abdc124psdv456sdvos456dv568dfpbk0dd";
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parts = number.split("[0-9]");
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System.out.println(Arrays.toString(parts));
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// Split the array using a whole number
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parts = number.split("[0-9]+");
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System.out.println(Arrays.toString(parts));
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//Create 3 Sub-strings
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String first = "Glasgow Clyde College";
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String Sub1 = first.substring(0, 7);
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String Sub2 = first.substring(8, 13);
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String Sub3 = first.substring(13, 21);
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System.out.println("\nFirst Sub-String is " + Sub1);
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System.out.println("Second Sub-String is " + Sub2);
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System.out.println("Third Sub-String is" + Sub3);
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// Working with characters of strings
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System.out.println("Please Enter Your Name: ");
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String name = in.nextLine();
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int n = name.length();
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char start = name.charAt(0);
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char last = name.charAt(n - 1);
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System.out.println("The First Letter Of The Name is " + start);
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System.out.println("The Last Letter Of The Name is " + last);
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// Generating userID from strings entered
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Scanner sc = new Scanner(System.in);
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System.out.println("Please enter your first name: ");
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String firstName = sc.next();
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System.out.println("Please enter your last name: ");
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String secondName = sc.next();
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sc.close();
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LocalDateTime nowIsTheTime = LocalDateTime.now();
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DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyyMMdd");
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String s = nowIsTheTime.format(dtf);
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String firstInitial = firstName.substring(0, 1);
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String secondInitial = secondName.substring(0, 1);
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String userName = firstInitial + secondInitial + s;
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System.out.println("Your UserID Is : " + userName);
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}
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}
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public class NewCalcEngine {
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public static void main(String[] args) {
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performCalculations();
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}
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static void performCalculations() {
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double[] leftVals = {100.0d, 25.0d, 225.0d, 11.0d};
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double[] rightVals = {50.0d, 92.0d, 17.0d, 3.0d};
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char[] opCodes = {'d', 'a', 's', 'm'};
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double[] results = new double[opCodes.length];
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for (int i = 0; i < opCodes.length; i++) {
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results[i] = execute(opCodes[i], leftVals[i], rightVals[i]);
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}
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for (double currentResult : results)
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System.out.println("result = " + currentResult);
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}
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static double execute(char opCode, double leftVal, double rightVal) {
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double result;
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switch (opCode) {
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case 'a':
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result = leftVal + rightVal;
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break;
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case 's':
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result = leftVal - rightVal;
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break;
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case 'm':
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result = leftVal * rightVal;
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break;
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case 'd':
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result = rightVal != 0 ? leftVal / rightVal : 0.0d;
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break;
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default:
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System.out.println("Invalid opCode: " + opCode);
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result = 0.0d;
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break;
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}
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return result;
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}
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}
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import java.time.LocalDate;
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import java.time.format.DateTimeFormatter;
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import java.util.Scanner;
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public class CalcEngine {
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static double execute(char opCode, double leftVal, double rightVal) {
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/* Return the correct value
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// Enhanced Switch Statement
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switch (opCodes[i]) {
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case 'a' -> results[i] = leftVals[i] + rightVals[i];
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case 's' -> results[i] = leftVals[i] - rightVals[i];
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case 'm' -> results[i] = leftVals[i] * rightVals[i];
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case 'd' -> results[i] = rightVals[i] != 0 ? leftVals[i] / rightVals[i] : 0.0d;
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default -> {
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System.out.println("Invalid opCode" + opCodes[i]);
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results[i] = 0.0d;
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}
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}
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*/
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double result;
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switch (opCode) {
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case 'a':
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result = leftVal + rightVal;
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break;
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case 's':
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result = leftVal - rightVal;
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break;
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case 'm':
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result = leftVal * rightVal;
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break;
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case 'd':
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result = rightVal != 0 ? leftVal / rightVal : 0.0d;
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break;
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default:
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System.out.println("Invalid opCode" + opCode);
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result = 0.0d;
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break;
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}
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return result;
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}
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static double getCommandLine(String[] args) {
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/* Handle the command line arguments and get the result */
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char opCode = args[0].charAt(0);
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double leftVal = Double.parseDouble(args[1]);
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double rightVal = Double.parseDouble(args[2]);
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return execute(opCode, leftVal, rightVal);
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}
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static char getOpCodeFromString(String operationName) {
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/* Return the opcode from the string*/
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return operationName.charAt(0);
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}
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static double valueFromWord(String word) {
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/* Return the double representation of the number */
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String[] values = {
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"zero", "one", "two", "three", "four", "five",
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"six", "seven", "eight", "nine", "ten"
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};
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double value = -1d;
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for (int i = 0; i < values.length; i++) {
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if (word.equals(values[i])) {
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value = i;
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break;
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}
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}
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// Checking to see if value had changed, if not. Parse the string into a double
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if (value == -1)
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value = Double.parseDouble(word);
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return value;
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}
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static char symbolFromOpCode(char opCode) {
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/* Get the relevant symbol for the operation given by the user*/
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char[] opCodes = {'a', 's', 'm', 'd'};
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char[] symbols = {'+', '-', '*', '/'};
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char symbol = ' ';
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// Loop through the list of chars and get the relevant symbol
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for (int i = 0; i < opCodes.length; i++) {
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if (opCode == opCodes[i]) {
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symbol = symbols[i];
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break;
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}
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}
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return symbol;
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}
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static void displayResult(char opCode, double leftVal, double rightVal, double result) {
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/* Display the result of the expression but nicely formatted */
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char symbol = symbolFromOpCode(opCode);
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// StringBuilder stringBuilder = new StringBuilder();
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// stringBuilder.append(leftVal);
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// stringBuilder.append(" " + symbol + " ");
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// stringBuilder.append(rightVal);
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// stringBuilder.append(" = ");
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// stringBuilder.append(result);
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// String finalResult = stringBuilder.toString();
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String finalResult = String.format("%.1f %c %.1f = %.1f",
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leftVal, symbol, rightVal, result);
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System.out.println(finalResult);
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}
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static void handleWhen(String[] stringParts) {
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/* Return date arithmetic operation (days added) */
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DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("dd-MM-yyyy");
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LocalDate startDate = LocalDate.parse(stringParts[1], dateTimeFormatter);
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long daysToAdd = (long) valueFromWord(stringParts[2]);
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LocalDate newDate = startDate.plusDays(daysToAdd);
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String output = String.format("%s + %d days is %s",
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startDate.format(dateTimeFormatter), daysToAdd, newDate.format(dateTimeFormatter));
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System.out.println(output);
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}
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static void performOperation(String[] stringParts) {
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/* Execute the operation with the numbers given by the user */
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char opCode = getOpCodeFromString(stringParts[0]);
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if (opCode == 'w') {
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handleWhen(stringParts);
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} else {
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double leftVal = valueFromWord(stringParts[1]);
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double rightVal = valueFromWord(stringParts[2]);
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double result = execute(opCode, leftVal, rightVal);
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displayResult(opCode, leftVal, rightVal, result);
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}
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}
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static void executeInteractively() {
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/* Allow the user to be able to enter in numbers for operations */
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Scanner in = new Scanner(System.in);
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System.out.println("Enter in an operation and two numbers");
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String userInput = in.nextLine();
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in.close();
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String[] stringParts = userInput.split(" ");
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performOperation(stringParts);
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}
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public static void main(String[] args) {
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double[] leftVals = {100.0d, 25.0d, 225.0d, 11.0d};
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double[] rightVals = {50.0d, 92.0d, 17.0d, 3.0};
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char[] opCodes = {'d', 'a', 's', 'm'};
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double[] results = new double[opCodes.length];
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// Make sure the user has entered in command line arguments before trying to use them
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if (args.length == 0) {
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// Get the results of the operation and store it into an array
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for (int i = 0; i < opCodes.length; i++)
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results[i] = execute(opCodes[i], leftVals[i], rightVals[i]);
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// Print out all the results stored in the array
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for (double currentResult: results)
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System.out.println(currentResult);
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} else if (args.length == 1 && args[0].equals("interactive")) {
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executeInteractively();
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} else if (args.length == 3)
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System.out.println(getCommandLine(args));
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else
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System.out.println("Please Enter 3 Command Line Arguments!");
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}
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}
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package com.pluralsite.getorganised;
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public class GetOrganised {
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public static void main(String[] args) throws Exception {
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System.out.println("I'm organised!");
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}
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}
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public class HelloWorld {
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public static void main(String[] args) {
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System.out.println("Hello, World!");
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}
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}
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public class OperatorPrecedence {
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public static void main(String[] args) {
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int valA = 21;
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int valB = 6;
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int valC = 3;
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int valD = 1;
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int result1 = valA / valC * valD + valB;
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int result2 = valA / (valC * (valD + valB));
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System.out.println(result1);
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System.out.println(result2);
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}
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}
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public class TypeConversion {
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public static void main(String[] args) {
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float floatVal = 1.0f;
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double doubleVal = 4.0d;
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byte byteVal = 7;
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short shortVal = 7;
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long longVal = 5;
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// Possible
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short result1 = byteVal;
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// Not possible
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// short result2 = longVal;
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// Possible
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short result2 = (short) longVal;
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// Not Possible
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// short result3 = byteVal - longVal;
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// Possible
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short result3 = (short) (byteVal - longVal);
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// Not Possible
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// long result4 = longVal - floatVal;
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// Better to do this - Possible
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float result4 = longVal - floatVal;
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// Possible
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double result5 = doubleVal + shortVal;
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System.out.println("Success");
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System.out.println(result1);
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System.out.println(result2);
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System.out.println(result3);
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System.out.println(result4);
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System.out.println(result5);
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}
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}
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@ -0,0 +1,7 @@
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# LearningJava
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#### Uploading any projects/code that shows my progression in learning Java
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# Courses Included
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- [Java Fundamentals](https://app.pluralsight.com/library/courses/getting-started-programming-java/table-of-contents)
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- [Java Classes & Interfaces](https://app.pluralsight.com/library/courses/working-classes-interfaces-java/table-of-contents)
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Reference in New Issue