oop - Inheritance behaviour in java -

can explain , why shows error in eclipse , run without error.i have paste code below.

parent class:

public class parent {     /*parent class method*/     public void show() {          system.out.println("parent class show called");     } } 

child class:

public class child extends parent {     /* child class overridden method*/       private void show() {          // line show error in eclipse         system.out.println("child class show called ");     }      public static void main(string[] args) {         parent p = new child();         p.show();     } } 

output is: parent class show called

this happening because eclipse compiler can create class files in presence of compilation errors. please follow below link .

http://help.eclipse.org/mars/index.jsp?topic=%2forg.eclipse.jdt.doc.user%2fconcepts%2fconcept-java-builder.htm

but if open child class created in java decompiler see below code.

    public class child extends parent     {           private void show()           {               throw new error("unresolved compilation problem: cannot reduce visibility of inherited method parent");           }            public static void main(string[] args)           {                 parent p = new child();                 p.show();           }     } 

so eclipse doing ignoring error , creating class file error , when class file present can run code , because @ compile time able find out parent has method show calling method. if change reference parent child class give exception @ runtime.

exception in thread "main" java.lang.error: unresolved compilation problem: cannot reduce visibility of inherited method parent @ com.nucleus.finnone.tbs.child.show(child.java:5) @ com.nucleus.finnone.tbs.child.main(child.java:12)