Primary constructor body not allowed????? i don't see whats wrong?

i made this basic code and it keeps telling me that Primary constructor body not allowed and i can’t seem to fix it.

using UnityEngine;
using System.Collections;

public class buttonHIT : MonoBehaviour
{

public Text ButtText;
public GameObject trapD;

void Start () 
{
	ButtText.enabled = false;
}

void OnTriggerEnter (Collider other);
{
	if (other.gameObject.tag == "zone") 
	{
		ButtText.enabled = true;

		if (Input.GetKeyDown (KeyCode.p)) 
		{
			Destroy(trapD);
		}
	}
}

void OnTriggerExit (Collider other);
{	
	if (other.gameObject.tag == "zone")
	{
		ButtText.enabled = false;
	}
}

}

probably the extraneous semicolon on lines 9 & 21 (as posted here)