update SuperConstruct1_java.java

src/main/scala/ScalaBasic/SuperConstruct1_java.java

@@ -2,31 +2,41 @@
 
 // https://www.youtube.com/watch?v=EeN3v0zAsgg&list=PLmOn9nNkQxJEqCNXBu5ozT_26xwvUbHyE&index=80
 
-import com.sun.tools.internal.ws.wsdl.document.soap.SOAPUse;
-
 public class SuperConstruct1_java {
     public static void main(String[] args){
         System.out.println("SuperConstruct1 ...");
 
+        // run
+        B_java b = new B_java();
+
+        // run 2
+        B_java b_2 = new B_java("tim cat");
     }
 }
 
+// parent class
 class A_java {
+    // constructor without param
     public A_java(){
         System.out.println("A()");
     }
+    // constructor with param
     public A_java(String name){
         System.out.println("A(String name)" + name);
     }
 }
 
+// children class
 class B_java extends A_java{
+    // constructor without param
     public  B_java(){
         // here java will "implicitly" use super(),
         // i.e.  A_java() (without param)
+        //super();
         System.out.println("B()");
     }
 
+    // constructor with param
     public B_java(String name){
         super(name);
         System.out.println("B(String name)" + name);