Answer Posted / sai

Marker Interface is a interface which does not have methods
and also one more point is that it makes the method to
execute compulsory.Example Runnable Interface we call it as
a Marker Interface but as per the First Point it should not
be a Marker Interface but it contains a run() and when u r
extending the Thread Class it is making u to execute run()
Indirectly.

So my dear friends when u r argue abt some topic plz be
clear with it and then argue.

Differece between class and generic class?

1041

---

You're given a Boolean 2D matrix, can you find the number of islands?

1104

---

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". } } }

1800

---

What do you understand by an io stream?

1043

---

what is the role of xml in core java?? and how we can use it?? can somebody give a sample program with explanation and from where i can read more about xml?????

2269

---

Difference between this() and super() in java ?

1078

---

Explain restrictions on using enum?

1079

---

Does apple use java?

949

---

What is java util function?

1099

---

Explain different forms of polymorphism?

1149

---

What is the difference between Grid and Gridbaglayout?

1243

---

Which list does not allow duplicates in java?

937

---

What language is an assembler written in?

997

---

What is the final class?

1058

---

explain copyonwritearraylist and when do we use copyonwritearraylist?

949

---