Help with methods

[damo190]

Hi,
I need help with adding a line of code to a method from a different class. So what I'm doing is I want to add this

this.tasks.addTask(8, new EntityAIAvoidEntity(this, EntityPlayer.class, 16.0F, 2.5D, 2.5D));

Into the class EntityCow which is in a completly different package. I would like to add that code to this method here which looks like this

 public EntityCow(World par1World)
    {
        super(par1World);
        this.setSize(0.9F, 1.3F);
        this.getNavigator().setAvoidsWater(true);
        this.tasks.addTask(0, new EntityAISwimming(this));
        this.tasks.addTask(1, new EntityAIPanic(this, 2.0D));
        this.tasks.addTask(2, new EntityAIMate(this, 1.0D));
        this.tasks.addTask(3, new EntityAITempt(this, 1.25D, Item.wheat.itemID, false));
        this.tasks.addTask(4, new EntityAIFollowParent(this, 1.25D));
        this.tasks.addTask(5, new EntityAIWander(this, 1.0D));
        this.tasks.addTask(6, new EntityAIWatchClosest(this, EntityPlayer.class, 6.0F));
        this.tasks.addTask(7, new EntityAILookIdle(this));
        
    }

Could someone please help me thanks

[ella.p]

import java.util.Scanner;
public class CalculatorTester
{
static boolean done = false;
static Calculator calc1 = new Calculator();
static Calculator calc2 = new Calculator();
static Scanner keyboard = new Scanner(System.in);
public static void main()
{
while(!done)
{
welcome();
caclulation();
}
}

public static void welcome()
{ System.out.println("1. Add or Change Numbers");
System.out.println("2. The Sum");
System.out.println("3. The Difference");
System.out.println("4. The Product");
System.out.println("5. The Average");
System.out.println("6. The Distance");
System.out.println("7. The Maximum");
System.out.println("8. The Minimum");
System.out.println("9. The Mod");
System.out.println("10. Switch Calculator");
System.out.println("0. Done!");
int input = keyboard.nextInt();
}
Why cant it find the calculation method

public static void calculation(int input)
{
if (input == 1)
{
System.out.println("Enter your first number");
int x = keyboard.nextInt();
System.out.println("Enter your second number");
int y = keyboard.nextInt();
}
if (input == 2)
{
System.out.println("The sum is " + calc1.FindSum());
}
if (input == 3)
{
System.out.println("The difference is " + calc1.FindDifference());
}
if (input == 4)
{
System.out.println("The product is " + calc1.FindProduct());
}
if (input == 5)
{
System.out.println("The average is " + calc1.FindAverage());
}
if (input == 6)
{
System.out.println("The absolute value is " + calc1.FindAbsoluteValue());
}
if (input == 7)
{
System.out.println("The max is " + calc1.FindMax());
}
if (input == 8)
{
System.out.println("The min is " + calc1.FindMin());
}
if (input == 9)
{
System.out.println("The mod is " + calc1.FindMod());
}
if (input == 0)
{
boolean done = true;
}
}
}