Here is the code. (This is all mine, I am showing how I coded it.) I try to code very simple and straight forward. If you guys have any tips or comments please comment or PM me.
public class Diamond {
public static void main(String[] args){
int space = 5;
int stars = 1;
for(int height = 1; height <= 6; height++){
for(int x = 1; x <= space; x++){
System.out.print(" ");
}
space--;
for(int x = 0; x < stars; x++){
System.out.print("*");
}
stars += 2;
System.out.println();
}
space = 1;
stars = 9;
for(int height = 1; height <= 6; height++){
for(int spaces = 1; spaces <= space; spaces++){
System.out.print(" ");
}
space++;
for(int x = 0; x < stars; x++){
System.out.print("*");
}
stars -= 2;
System.out.println();
}
}
}