Welcome to my Java program!

Detailed Answer

        
public class Methods {


    public static void printIntroduction() {
        System.out.println("Welcome to my Java program!");
    }

    public static void main(String[] args) {

        printIntroduction();
    }

}
            
        
    

Assuming the user inputs the name "Jack", the output should be:

Hello Jack! Welcome to my Java program.

Detailed Answer

        
import java.util.Scanner;

public class Methods {

    public static void greetUser(String name) {
        System.out.println("Hello, " + name + "! Welcome to my Java program.");
    }
    
    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter your name: ");
        String name = scanner.nextLine();

        greetUser(name);
    }
}
        
    

Assuming the user inputs the number 7, the output should be:

The number 7 is odd.

Detailed Answer

        
import java.util.Scanner;

public class Methods {

    public static void isEven(int number) {
        
        if (number % 2 == 0) {
            System.out.println("The number " + number + " is even.");
        }
        
        else {
            System.out.println("The number is odd");
        }
        
    }
    
    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter an integer: ");
        int number = scanner.nextInt();

        isEven(number);
    }
}
        
    

Assuming the user inputs the numbers 5 and 5:

The area of this triangle is 12.5.

Detailed Answer

        
import java.util.Scanner;

public class Methods {

	public static void areaCalculator(int height, int base) {
		
		double area = (double) height * base / 2;
		
		if (height <=0 || base <= 0) {
			System.out.println("Enter valid dimensions");
		}
		
		else {
			System.out.println("The area of this triangle is " + area);
		}
	}

public static void main(String[] args) {

    Scanner scanner = new Scanner(System.in);
    System.out.print("Enter the height: ");
    int height = scanner.nextInt();

    System.out.print("Enter the base: ");
    int base = scanner.nextInt();
    
    areaCalculator(height, base);
    }
}

            
        
    

Assuming the user inputs the numbers 5,3, and 8:

The largest number is 8.

Detailed Answer

        
import java.util.Scanner;

public class Methods {

    public static void findMax(int number1, int number2, int number3) {
        
        int max = number1;
        
        if (number2 > max) {
            max = number2;
        }
        
        if (number3 > max) {
            max = number3;
        }
        
        if (number1 == number2 && number2 == number3) {
            System.out.println("All numbers are equal.");
        } 
        
        else {
            System.out.println("The largest number is " + max);
        }
    }

    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter the first number: ");
        int number1 = scanner.nextInt();
        
        System.out.print("Enter the second number: ");
        int number2 = scanner.nextInt();
        
        System.out.print("Enter the third number: ");
        int number3 = scanner.nextInt();

        findMax(number1, number2, number3);
        
    }
}

            
        
    

Assuming the user inputs number 8:

The count of even numbers from 1 to 8 is 4.

Detailed Answer

                
import java.util.Scanner;

public class Methods {
    
    public static void countEvenNumbers(int n) {
        
        int count = 0;
        for (int i = 1; i <= n; i++) {
            if (i % 2 == 0) {
                count++;
            }
        }
        System.out.println("The count of all even numbers from 1 to " + n + " is " + count);
    }
    
    public static void squareNumber(int n) {
        int square = n * n;
        System.out.println("The square of number " + n + " is " + square);
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter a positive integer: ");
        int n = scanner.nextInt();
        
        if (n <= 0) {
            System.out.println("Please enter a positive integer.");
        } 
        
        else {
            countEvenNumbers(n);
            squareNumber(n);
        }
    }
}
                
            

Assuming the user inputs "full-time" and 10, the output should be:

The total monthly salary for this full-time employee is 1760.

Detailed Answer

                
import java.util.Scanner;

public class Methods {

    public static void calculateBonus(String employment_type, double wage) {
        
        double salary = 0;
        
        if (employment_type.equals("full-time")) {
            double new_wage = wage * 1.1;
            salary = new_wage * 160;
        }
        
        else {
            double new_wage = wage * 1.05;
            salary = new_wage * 160;
        }
        System.out.println("Thte total monthly salary for " + employment_type + " with initial wages of " + wage + " is " + salary);
    }
    
    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);
        
        System.out.print("Enter your employment-type: ");
        String type = scanner.nextLine();
        
        System.out.print("Enter your wage: ");
        double wage = scanner.nextDouble();
        
        if (!type.equals("part-time") && !type.equals("full-time") || wage <= 0) {
            System.out.println("Enter valid credentials.");
        }
        
        else {
            
            calculateBonus(type, wage);
        }   
    }
}
                    

                       
                
            

Assuming the user inputs the numbers 4 and 4, the output should be:

The following dimensions result in a square: true.

Detailed Answer

        
import java.util.Scanner;

public class Methods {

    public static boolean isSquare(int height, int length) {
        
        if (height == length) {
            return true;
        }
        
        else {
            return false;
        }
    }

    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);
        
        System.out.print("Enter the height: ");
        int height = scanner.nextInt();
        
        System.out.print("Enter the length: ");
        int length = scanner.nextInt();
        
        boolean result = isSquare(height, length);
        
        System.out.println("The following dimensions result in a square: " + result);

    }
}
               
        
    

Mark received distinction with a grade of 6.3

Tom received distinction with a grade of 6.6

Sarah received distinction with a grade of 5.9

Detailed Answer

        
import java.util.Scanner;

public class Methods {

    public static boolean gotDistinction(double grade) {

        if (grade > 5.8) {
            return true;
        }
        
        else {
            return false;
        }
    }

    public static void main(String[] args) {

        double[] grade_averages = {5.2, 4.3, 6.3, 6.6, 5.1, 4.8, 5.9};
        String[] students = {"John", "Alice", "Mark", "Tom", "Sue", "Mike", "Sarah"};
        
        for (int i = 0; i < grade_averages.length; i++) {
            
            boolean distinction = gotDistinction(grade_averages[i]);
            
            if (distinction) {
                System.out.println(students[i] + " received distinction with a grade of " + grade_averages[i]);
            }
        }
    }
}
               
        
    

Assuming the user inputs "addition" and the numbers 5 and 2, the output should be:

The result of the addition is 7.

Detailed Answer

        
import java.util.Scanner;

public class Methods {


    public static int addition(int number1, int number2) {
        int result = number1 + number2;
        return result;
    }

    
    public static int subtraction(int number1, int number2) {
        int result = number1 - number2;
        return result;
    }

    
    
    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter the operation: ");
        String operation = scanner.nextLine();
        
        if (operation.equals("addition")) {
            
            System.out.print("Enter the first number: ");
            int number1 = scanner.nextInt();
            
            System.out.print("Enter the second number: ");
            int number2 = scanner.nextInt();
            
            int result = addition(number1, number2);
            System.out.println("The result of the addition is " + result);
            
            
        }
        
        else if (operation.equals("subtraction")) {
            
            System.out.print("Enter the first number: ");
            int number1 = scanner.nextInt();
            
            System.out.print("Enter the second number: ");
            int number2 = scanner.nextInt();
            
            int result = subtraction(number1, number2);
            System.out.println("The result of the subtraction is " + result);
            
        }

        else {
            
            System.out.println("Wrong operation. Only addition and subtraction are possible.");
        }


    }
}