Answer Posted / gopi

The class main method is start with public . This is
starting of the program, compiler have to know where to
start the program to compile. so only one public is there to
avoid confusion. We also use the public method to interact
with the out side of the programs. Without using of the
public class it can't possible to interact.

What is a nullable field?

1025

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Is overriding possible in java?

939

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Which class cannot be a subclass in java?

1005

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Can we define constructor in inner class?

986

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How to make a read-only class in java?

1137

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What is serialization in java?

1046

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Why string is called as immutable?

926

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Do I need java for windows 10?

1026

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What is java reflection?

961

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993

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981

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Define linked list and its features with signature?

977

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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". } } }

1785

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Describe 2 different ways to concatenate two strings.

1186

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What is the advantage of preparedstatement over statement?

1089

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