## Practice Exercises Java

Learn to program performing exercises with Java

## 12 Lessons Java with the Solutions - 228 Exercises Java with the solutions For Beginners, Intermediates and Advanceds

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# Array of struct and menu - Practice Exercises Java

## Source Code:

``````import java.util.*;
public class Main
{
private final static class points
{
public byte x;
public byte y;

public points clone()
{
points varCopy = new points();

varCopy.x = this.x;
varCopy.y = this.y;

return varCopy;
}
}

public static void main(String[] args)
{
points[] p = new points[1000];
boolean Finish = false;
int countArray = 0;
int TotalX = 0;
int TotalY = 0;
do
{
System.out.println("1.Add data for one point");
System.out.println("2.Display all the entered points");
System.out.println("3.Calculate (and display) the average values for x and y");
System.out.println("0.Exit the program");
System.out.print("Enter a number: ");

byte respuesta = Byte.parseByte(new Scanner(System.in).nextLine());
switch (respuesta)
{
case 1:
System.out.println();
System.out.print("Enter a number for point x: ");
p[countArray].x = Byte.parseByte(new Scanner(System.in).nextLine());
TotalX += p[countArray].x;
System.out.println();
System.out.print("Enter a number for point y: ");
p[countArray].y = Byte.parseByte(new Scanner(System.in).nextLine());
TotalY += p[countArray].y;
System.out.println();
countArray++;
break;
case 2:
if (countArray > 0)
{
for (int i = 0; i < countArray; i++)
{
System.out.printf("Valor x%1\$s: %2\$s" + "\r\n", i + 1, p[i].x);
System.out.printf("Valor y%1\$s: %2\$s" + "\r\n", i + 1, p[i].y);
}
}
else
{
System.out.println("No hay datos");
}
break;
case 3:
if (countArray > 0)
{
System.out.printf("Average x: %1\$s" + "\r\n", TotalX / countArray);
System.out.printf("Average y: %1\$s" + "\r\n", TotalY / countArray);
}
else
{
System.out.println("No hay datos");
}
break;
case 0:
Finish = true;
break;
default:
break;
}
} while (!Finish);
}
}``````
Exercisey 4.10

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