// Online Java Compiler // Use this editor to write, compile and run your Java code online class HelloWorld { public static void main(String[] args) { int n=4; for (int i=1; i<=n; i++){ for(int j=i; j<=n; j++){ System.out.print(" "); } for(int j=1; j<i; j++){ System.out.print("*"); } for(int j=1; j<=i; j++){ System.out.print("*"); } System.out.println(" "); } for(int i=1; i<=n; i++){ for(int j=1; j<=i; j++){ System.out.print(" "); } for(int j=i; j<n; j++ ){ System.out.print("*"); } for(int j=i; j<=n; j++ ){ System.out.print("*"); } System.out.println(); } } }