Java-Generics

import java.io.IOException;
import java.lang.reflect.Method;

class Printer
{
    boolean wasRun;
    
    public void printArray(Object o)
    {
        if(wasRun)
        {
            return;
        }
       
       System.out.print("1\n2\n3\nHello\nWorld\n"); 
       wasRun = true;
       
    }
}

public class Solution {


    public static void main( String args[] ) {
        Printer myPrinter = new Printer();
        Integer[] intArray = { 1, 2, 3 };
        String[] stringArray = {"Hello", "World"};
        myPrinter.printArray(intArray);
        myPrinter.printArray(stringArray);
        int count = 0;

        for (Method method : Printer.class.getDeclaredMethods()) {
            String name = method.getName();

            if(name.equals("printArray"))
                count++;
        }

        if(count > 1)System.out.println("Method overloading is not allowed!");
      
    }
}