Answer Posted / venu

A programer uses an abstract class when there are some
common features of the program shared by all the objects.
A programer uses an interface when all the features of the
program are implements differently for different objects.

What is the difference between public, private, protected, and friend access?

570

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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". } } }

1347

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What is a nested class?

592

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What is string data type?

551

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What is function and method in java?

520

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Can we use a default constructor of a class even if an explicit constructor is defined?

649

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Does constructor creates the object ?

582

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Is a class an object?

577

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Can an arraylist be empty?

564

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Explain Basics of OOP Language in java

588

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Why hashmap is used in java?

544

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What are the basic control structures?

494

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Explain the difference between call by refrence and call by value?

561

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What is files manifesting?

1725

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Explain all java features with real time examples

1204

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