Create StarPrinting.java

This is my first try for contributing in opensource

Java/StarPrinting.java

@@ -0,0 +1,53 @@
+import java.util.*;
+public class star {
+    public static void main(String[] args) {
+        Scanner scn =  new Scanner (System.in);
+        int N = scn.nextInt();
+
+        //upperstar
+        for(int i = 1 ; i<=N ; i++){
+            for(int j = 1; j<=2*N-i ; j++){
+                System.out.print(" ");
+            }
+            for(int k = 0 ; k<2*i-1 ; k++){
+                System.out.print("*");
+            }
+            System.out.println();
+        }
+
+        //upper2
+        for(int i = 0 ; i < N ; i++){
+            for(int a = 0 ; a<i ; a++){
+                System.out.print(" ");
+            }
+            for(int b = 1 ; b<4*N-2*i; b++){
+                System.out.print("*");
+            }
+            System.out.println();
+        }
+
+        //upper3
+        for(int i = 1 ; i <= N ; i++){
+            for(int a = 0 ; a<N-i ; a++){
+                System.out.print(" ");
+            }
+            for(int b = 1 ; b<2*N+2*i; b++){
+                System.out.print("*");
+            }
+            System.out.println();
+        }
+
+        //bottom
+        for(int i = 0 ; i< N ; i++){
+            for(int j = 1 ; j<=N+i ; j++){
+                System.out.print(" ");
+            }
+            for(int k = 1; k<2*(N-i); k++){
+                System.out.print("*");
+            }
+            System.out.println();
+        }
+        scn.close();
+    }
+
+}