public class methods {

	public static void main(String[] args) {
//question 1:
		HelloMessage();

//question 2:		
		double sum = sum(19.50, 100.60);
		System.out.println(sum);
		
//question 3:
		boolean number = number(9);
		System.out.println(number);
   //same
      boolean number = isEven(12);
		System.out.println(number);
		
//question 4:
		String full_name = name("Mohamed " , " Abdirizak");
		System.out.println(full_name);
      //same
      public static void main(String[] args) {
		String marged = concatt("Najma" , " Daud" , " Abdi");
		System.out.println(marged);
		
//question 5:
		double num = remainder(30 , 12);
		System.out.println(num);
		double numb = remainder(40, 12);
		System.out.println(numb);
      
//same Question 5:
        public static void main(String[] args) {
		remainder(28.5, 4.8);
	}
	

1.
	//we use method.
	public static void HelloMessage() {
		System.out.println("Hello world");
    }

2.	
	public static double sum(double a, double b) {
		double sum = a + b;
		return sum;
	}
3.	
	public static boolean number(int number) {
		if(number %2 ==0) {
			return true;
		}
		else {
			return false;
		}
	}
//same
      	public static boolean isEven(int x) {
		if(x%2 == 0)
			return true;
		else
			return false;
	}
4.	
      //we use Return Method.
	public static String name(String firstName, String secondName) {
		String full_name = firstName + secondName;
		return full_name.toUpperCase();
	}
 //same
        public static String concatt(String One , String Two, String Three) {
		String marged = One + Two + Three;
		return marged.toUppercase();
	}

5.
	public static double remainder(double x, double y) {
		double remainder = x / y;
		return remainder;
	}
//same
    public static void remainder(double x, double y) {
		double remainder = x / y;
		System.out.printf("remainder =  %.2f ", remainder);
	}
}