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import java.io.BufferedReader;
import java.io.InputStreamReader;
class HollowBox {
public static void main(String[] args) throws java.io.IOException {
int h,w;
//Buffered readers can improve speed up to 30% as they are less bloated than scanners and don't cause a memory leak when not closed
BufferedReader HeightI = new BufferedReader(new InputStreamReader(System.in));
BufferedReader WidthI = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Height");
h = Integer.parseInt(HeightI.readLine());
System.out.println("Width");
w = Integer.parseInt(WidthI.readLine());
//if less than 3, re-enter
if(h<3) {
System.out.println("Invalid height! Re-enter:");
h = Integer.parseInt(HeightI.readLine());
}
if(w<3) {
System.out.println("Invalid width! Re-enter:");
w = Integer.parseInt(WidthI.readLine());;
}
for(int i=0;i<h;i++) { //loops for height
for(int j=0;j<w;j++) { //loops for width
if(i==0||i==h-1) { //if i is in the 0th place or height then it will print out *
System.out.print("*");
}else {
if(j==0||j==w-1) { //if j is in the 0th place or width then it will print out *
System.out.print("*");
}else {
System.out.print(" "); //if j is in the in between the 0th place and width then it will print out a space
}
}
}
System.out.println(""); //prints out next line
}
}
}
//By msglm; Special thanks to Jude Spikes
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