public class Dortgenciz {
int i, j;

public void ciz(int a,int b){

for(int i=0;i<a;i++){
System.out.print("*");
}

System.out.print("\n");

for(int y=0;y<b-2;y++){
System.out.print("*");

for(int z=0;z<a-2;z++){
System.out.print(" ");
}

System.out.print("*");

System.out.print("\n");
}

for(int i=0;i<a;i++){
System.out.print("*");
}
}

public static void main(String args[]) {
Dortgenciz yeni = new Dortgenciz();
yeni.ciz(7,5);
}
}