here you will find the codes for everything we made in the course
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello World!");
}
}public class variables {
public static void main(String[] args) {
//int
int myInt = 42;
//string
String myString = "Hello, world!";
//double
double myDouble = 3.14;
//float
long myLong = 123456789L;
//boolean
boolean myBoolean = true;
//char
char myChar = 'a';
//byte
byte myByte = 127;
// print
System.out.println("myInt = " + myInt);
System.out.println("myString = " + myString);
System.out.println("myDouble = " + myDouble);
System.out.println("myLong = " + myLong);
System.out.println("myBoolean = "+ myBoolean);
System.out.println("myChar = " + myChar);
System.out.println("myByte = " + myByte);
}
}public class operators {
public static void main(String[] args) {
int x = 5;
int y = 3;
// add
int sum = x + y;
// subtract
int sub = x - y;
// multiply
int mul = x * y;
// divide
int div = x / y;
// modulo
int mod = x % y;
// print
System.out.println("sum = " + sum);
System.out.println("sub = " + sub);
System.out.println("mul = " + mul);
System.out.println("div = " + div);
System.out.println("mod = " + mod);
}}public class operators {
public static void main(String[] args) {
int x = 5;
int y = 3;
// and
boolean and = x > 3 && y < 2;
// or
boolean or = x > 3 || y < 2;
// not
boolean not = !(x > 3 && y < 2);
// print
System.out.println("and = " + and);
System.out.println("or = " + or);
System.out.println("not = " + not);
}}public class operators {
public static void main(String[] args) {
int x = 5;
int y = 3;
// equal
boolean equal = x == y;
// not equal
boolean notEqual = x != y;
// greater than
boolean greaterThan = x > y;
// less than
boolean lessThan = x < y;
// greater than or equal
boolean greaterThanOrEqual = x >= y;
// less than or equal
boolean lessThanOrEqual = x <= y;
// print
System.out.println("equal = " + equal);
System.out.println("notEqual = " + notEqual);
System.out.println("greaterThan = " + greaterThan);
System.out.println("lessThan = " + lessThan);
System.out.println("greaterThanOrEqual = " + greaterThanOrEqual);
System.out.println("lessThanOrEqual = " + lessThanOrEqual);
}}import java.util.Scanner;
public class scanner {
public static void main(String[] args) {
// create a scanner object
Scanner scanner = new Scanner(System.in);
// output the prompt
System.out.println("Enter a line of text: ");
// wait for the user to enter a line of text
String line = scanner.nextLine();
// tell them what they entered
System.out.println("You entered: " + line);
}
}import java.util.Scanner;
public class example {
public static void main(String[] args) {
// create a scanner object
Scanner scanner = new Scanner(System.in);
// output the prompt
System.out.println("Enter the first number: ");
// wait for the user to enter a number
int number1 = scanner.nextInt();
// output the prompt
System.out.println("Enter the second number: ");
// wait for the user to enter a number
int number2 = scanner.nextInt();
// add
System.out.println("The sum of " + number1 + " and " + number2 + " is " + (number1 + number2));
// subtract
System.out.println("The difference between " + number1 + " and " + number2 + " is " + (number1 - number2));
// multiply
System.out.println("The product of " + number1 + " and " + number2 + " is " + (number1 * number2));
// divide
System.out.println("The quotient of " + number1 + " and " + number2 + " is " + (number1 / number2));
}
}import java.text.DecimalFormat;
import java.util.Locale;
import java.util.Scanner;
public class UserInfo {
public static void main(String[] args) {
Locale.setDefault(new Locale("es", "US"));
Locale locale = Locale.getDefault();
Scanner scanner = new Scanner(System.in);
System.out.print("Enter your name: ");
String name = scanner.nextLine();
System.out.print("Enter your age: ");
int age = scanner.nextInt();
scanner.nextLine();
System.out.print("Enter your country: ");
String country = scanner.nextLine();
System.out.print("Enter your GPA: ");
double gpa = scanner.nextDouble();
scanner.nextLine();
System.out.print("Enter your gender: ");
String gender = scanner.nextLine();
System.out.println("Name: " + name);
System.out.println("Age: " + age);
System.out.println("Country: " + country);
System.out.println("GPA: " + gpa);
System.out.println("Gender: " + gender);
}}int x = 5;
int y = 10;
System.out.println("x = " + x + " y = " + y);
if (x > y) {
System.out.println("x is greater than y");
} else if (x < y) {
System.out.println("x is less than y");
} else {
System.out.println("x is equal to y");
}int num1 = 10;
int num2 = 20;
int num3 = 30;
System.out.println("num1 = " + num1 + " num2 = " + num2 + " num3 = " + num3);
if (num1 > num2 && num1 > num3) {
System.out.println(num1 + " is the largest number.");
} else if (num2 > num1 && num2 > num3) {
System.out.println(num2 + " is the largest number.");
} else {
System.out.println(num3 + " is the largest number.");
}import java.util.Scanner;
public class DayName {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter the number of the day (1-7): ");
int dayNumber = scanner.nextInt();
switch (dayNumber) {
case 1:
System.out.println("the day is Sunday");
break;
case 2:
System.out.println("the day is Monday");
break;
case 3:
System.out.println("the day is Tuesday");
break;
case 4:
System.out.println("the day is Wednesday");
break;
case 5:
System.out.println("the day is Thursday");
break;
case 6:
System.out.println("the day is Friday");
break;
case 7:
System.out.println("the day is Saturday");
break;
default:
System.out.println("Invalid day number.");
}}}import java.util.Scanner;
public class Grade {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter the grade: ");
String grade = scanner.nextLine();
grade = grade.toUpperCase();
switch (grade) {
case "A":
System.out.println("Excellent!");
break;
case "B":
System.out.println("Good!");
break;
case "C":
System.out.println("Average!");
break;
case "D":
System.out.println("Poor!");
break;
case "F":
System.out.println("Fail!");
break;
default:
System.out.println("Invalid grade.");
}}}import java.util.Scanner;
public class TextChecker {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String expectedText = "Hello";
String userInput = "";
while (!userInput.equals(expectedText)) {
System.out.print("Type the text: ");
userInput = scanner.nextLine();
if (!userInput.equals(expectedText)) {
System.out.println("Incorrect text. Try again.");
}
}
System.out.println("Correct text!");
}
}import java.util.Scanner;
public class Menu {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int choice;
do {
System.out.print("Choose a number:\n
1. to Print 'Hello World' \n
2. to Print 'IEEE'
\n 3. Exit
\n Enter your choice:");
choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.println("\nHello World\n");
break;
case 2:
System.out.println("\nIEEE\n");
break;
case 3:
System.out.println("\nExiting...\n");
break;
default:
System.out.println("\nInvalid choice. Try again.\n");
break;
}
} while (choice != 3);
}
}import java.util.Scanner;
public class Factorial {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a number: ");
int num = scanner.nextInt();
int factorial = 1;
for (int i = 1; i <= num; i++) {
factorial *= i;
}
System.out.println("Factorial of " + num + " is " + factorial);
}
}import java.util.Scanner;
public class Calc {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter first number: ");
int num1 = scanner.nextInt();
System.out.print("Enter second number: ");
int num2 = scanner.nextInt();
System.out.println("Sum = " + calcSum(num1, num2));
}
public static int calcSum(int num1, int num2) {
return num1 + num2;
}
}import java.util.Scanner;
public class Factorial {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a number: ");
int num = scanner.nextInt();
getFactorial(num);
}
public static void getFactorial(int num) {
int factorial = 1;
for (int i = 1; i <= num; i++) {
factorial *= i;
}
System.out.println("Factorial of " + num + " is " + factorial);
}
}public class ArraySum {
public static void main(String[] args) {
int[] arr = {5,4,3,6,10};
// calculate the sum of the array
int sum = 0;
for (int i = 0; i < arr.length; i++) {
sum += arr[i];
}
System.out.println("the sum of the array : " + sum);
}
}this is the end of the course, i hope you enjoyed it and learned something new, if you have any questions you can contact me on discord: @gogo.13 , @yaj.13 or you can make a pull request and i will answer you as soon as possible
thank you for your time and have a nice day
this course was made by: yaj-13 for IEEE Taibah University Student Branch