Answer Posted / kvsravindrareddy

Normally abstract method should implement in the subclass,
otherwise application will give compilation error. If you want
to without compilation error, then subclass also make as a
abstract class, application will not give any compilation
error.
See the below sample code.

public abstract class AbstractExample {
public abstract void sampleMethod();
}
public abstract class AbstractExampleImple extends
AbstractExample {

}

Why is java called java?

815

---

Can an anonymous class be declared as implementing an interface and extending a class in java programming?

920

---

When is the finalize() called? What is the purpose of finalization?

846

---

Write code of any action class?

758

---

What is an 8 bit word?

827

---

Write code to implement bubble sort in java?

790

---

What is an inner class in java?

746

---

How to retrieve data from database in java using arraylist?

771

---

What are the basic concepts of OOPS in java?

787

---

Differece between class and generic class?

816

---

explain local datetime api in java8?

798

---

What is a variable declaration?

776

---

What is ‘has a’’ relationship in java?

972

---

Is there any way to find whether software installed in the system is registered by just providing the .exe file? I have tried the following code but its just displaying the directory structure in the registry. Here the code : package com.msi.intaller; import java.util.Iterator; import ca.beq.util.win32.registry.RegistryKey; import ca.beq.util.win32.registry.RootKey; public class RegistryFinder { public static void main(String... args) throws Exception { RegistryKey.initialize(RegistryFinder.class.getResource("jRe gistryKey.dll").getFile()); RegistryKey key = new RegistryKey(RootKey.HKLM, "Software\\ODBC"); for (Iterator subkeys = key.subkeys(); subkeys.hasNext();) { RegistryKey subkey = subkeys.next(); System.out.println(subkey.getName()); // You need to check here if there's anything which matches "Mozilla FireFox". } } }

1569

---

What is the difference between assignment and initialization?

826

---