Answer Posted / divya

You can only create a reference of an interface but cannot
instantiate.

Can we have any code between try and catch blocks?

927

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Can a boolean be null java?

919

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What are keywords in java?

949

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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". } } }

1752

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What is the difference between interface & abstract class?

983

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How hashset works internally in java?

1013

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Why do we override tostring method in java?

895

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What are the differences between graph and tree?

1061

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What is string immutability?

1025

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What are basic keywords?

998

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What is the purpose of file class?

962

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Can a static member function access member variable of an object?

956

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What does you mean in math?

1009

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What advantage do java's layout managers provide over traditional windowing systems?

911

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What does arrays sort do in java?

960

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