Courses/Mathesis/Intro2ProgrammingWithJava/Week2/2.4-Methods/sandbox/methods.html

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<sandbox version="java17" mainclass="Main" preview="true" v-cloak>
<sandbox-source name="Main.java">import java.util.*;

public class Main {	
 public static void main(String[] args) {
	 double x = 10;
	 double y = perimeter(x);
	 System.out.println("Perimeter of a circle or radius 10 = " + y);
	 
	 myPrint(1, 2, 3);
	 String[] sentences = new String[] {
	 	"Καλήν εσπέραν άρχοντες",
	 	"πώς είναι ο ορισμός σας"
	 };
	 myPrint(sentences);
	 
	 int a = 3;
	 changeParameter(a);
	 System.out.println(a);
	 
	 int[] arr = {1, 2, 3, 4, 5};
	 printArray(arr);
	 
 }
 
 static double perimeter(double r) {  // y = perimeter(r)
     return 2*Math.PI*r;        // 2*π*r
 }
 
 static void myPrint(int... numbers) {  // varargs
   for (int i : numbers) {
      System.out.print(i + " ");
   }
 }
 
 static void myPrint(String... lines) {  // varargs
    for (String e : lines) {
        System.out.println(e);
    }
 }
 
 static void changeParameter(int i) {
  i = 10;
  System.out.println(i);
 }
 
 static void printArray(int[] array) {
    array[0]=100;
    for (int i=0; i&lt;array.length; i++) {
        System.out.print(array[i] + ", ");
    }
    System.out.println();
 }
 
 static int calculate(int x, int y) {
   return x*y;
 }
 
 static double calculate(double x, double y) {
     return x*y; 
 }
 
 static int calculate(int x, int y, int z) {
   return x*y*z;
 }
}</sandbox-source>
</sandbox>
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