Answer Posted / rahul rastogi

Yes, Java is pure object oriented Language because in Java we can't use anything without Object.It means without object [directly or indirectly] we can't do anything.

What does business logic mean?

982

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What is your platform’s default character encoding?

1076

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What classes of exceptions may be thrown by a throw statement?

963

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how to know the total memory occupied by the objects in the ArrayList(Array list may contain duplicate objects)

2331

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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". } } }

1797

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What is default constructors?

990

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Differentiate between stringbuffer and stringbuilder in java.

1014

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What are the new features in java 8? Explain

945

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Explain the access modifiers for a class, method and variables?

1134

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Can constructor be inherited?

1028

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Can an integer be null java?

988

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What is character in data type?

954

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How many ways can an argument be passed to a subroutine and explain them?

1020

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Write a program to solve producer consumer problem in java?

1000

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What are basic keywords?

1037

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