Answer Posted / p.l.n.kumar

JDK is a software bundle consists of binary files such as
(javac,java,javadoc,jdb,javap,rmic....),java library files
(both old and new)and some header files. Development
environment requires this software.

JRE is also a software bundle same as JDK excluded with
some binary files( especially compiler - javac and
rmic ).Required to run applications of production
environment ( on client host system ).

JVM is available in both JDK and JRE. Java.exe file is used
to initiate VM process.The default heap size is 2MB and the
Max.heap size is 64MB.VM comes in two flavours...

-Hotspot client VM
-Hotspot server VM

Variable of the boolean type is automatically initialized as?

1009

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Can we print null in java?

1058

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In the below example, what will be the output?

1029

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What are register variables what are the advantages?

902

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What is difference between hashset and hashmap?

1118

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Can we have multiple classes in a single file?

976

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What things should be kept in mind while creating your own exceptions in java?

1160

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What an i/o filter?

1017

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What are void methods?

1023

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How do you create a method in java?

1001

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What is jar?

1120

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Does A Class Inherit The Constructors Of Its Superclass?

1074

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Can we modify the throws clause of the superclass method while overriding it in the subclass?

1035

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Is {a, n, d} a palindrome? If you are given a random string, is it a palindrome or not?

1133

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What is string example?

1052

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