How to print zigzag star pattern within the if-else using Java. I've been trying but I couldn't figure it out

class Main { public static void main(String[] args) {

for(int i=1;i<=4;i++){
    System.out.print("*");
} 
System.out.println("");


for(int j=1;j<=4-2;j++)
{
   for(int i=1;i<=4;i++)
   {
    if(i==1 || i==4) 
      {
 System.out.print("*");           
      } 
      else 
      {
       System.out.print("");
       }
      } 
      System.out.println();
     } 
 
 
 for(int i=1;i<=4;i++){
       System.out.print("*");
  } 
  System.out.println();

} 

}

My Output:

---

** **

---

I badly need to know how to get this Expected Output:

---

** **

---