Merge pull request Vedenin#78 from abhijeet223/patch-1

Vedenin · web-flow · commit 77601260db56 · 2020-01-02T09:27:01.000+01:00
updated it with a code of finding square root of any number
diff --git a/helloworlds/contributing.md b/helloworlds/contributing.md
@@ -5,3 +5,21 @@ You can see [json sections](https://github.com/Vedenin/useful-java-links/tree/ma
 Ideally, if you examples can be build using only maven, and running using only Idea Community or Eclipse.    
 
 Thank you for any your suggestions!
+ 
+ import java.lang.*;
+public class Calulator {
+    double i;
+    double x;
+    void p(){
+        x = Math.sqrt(i);
+    }
+}
+class Demonstration_81{
+    public static void main(String[] args){
+        Calulator a = new Calulator();
+        a.i = 20.0;
+        a.p();
+        System.out.println("Square root of"+a.i+" is "+a.x);
+
+    }
+}
