Suma de Números Pares Invertidos- Java

import java.io.*;
class problem02
{
public static void main(String args[]) throws IOException
{
BufferedReader in=new BufferedReader(new InputStreamReader (System.in));

System.out.print("ingresar numero de terminos: ");
int numter= Integer.parseInt(in.readLine());
int sumainv=0;
int par=2;
int cont=1;

while(cont<=numter)
{
 sumainv=sumainv+(1/par);
 par=par+2;
 cont=cont+1;
 }
System.out.println("la suma de pares invertidos es: "+sumainv);
 }
 }