Menghitung Perkalian deret di Java

contoh perkalian deret

outputnya:
2*4*6*8*10*12=46080

coding-nya:

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package allaboutalgoritma;
import java.util.Scanner;
/**
*
* @author dimata005
*/
public class Main {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {

int i, j, min, jum;

boolean prima;
Scanner input = new Scanner(System.in);

System.out.print("Masukkan nilai batas awal: ");
min = input.nextInt();
j=2;
//System.out.print(2);//<<j;
for (i=2;i<=min;i=i+2)
{
if(i==2){
System.out.print(2);//<<j;
}else{
System.out.print(" * ");
System.out.print(i);//<<j;
j = j * i;
}
}
System.out.println("\t\t= "+j);//"\t\t= "<<jum<<endl;
}

}