Senior Java Developer

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HashMap internally uses HashSet?

True

False

Unsigned primitive types:

Are available in Java

Are not supported by Java

Can be custom created in a program

All are correct

Exception class implements Serializable interface directly?

True

False

If you have multiple user threads running, which method can be used to give a chance to the lower priority thread for execution?

execute

yield

sleep

allow

Which tool provides the most fine grain control over the build process?

ANT

JBuilder

Maven

Java Compiler

You can create a collection of test cases in JUnit by using?

TestCase

TestSuite

TestCollection

TestCategory

It is best to provide a very large value for initial capacity for ArrayList in all application as we don’t want un-necessary memory allocation processing?

True

False

When you implement Serializable interface, it is mandatory for the developer to provide a UID for this class?

True

False

In a Java test program, developer has added two overloaded public non-static methods to a class. The two methods may not be always:

Having the same name

Having different number and type of arguments

Invokable without any confusion to JVM

10.

Joshua Bloch has not contributed to which API?

String

Collections

Assert

Math API

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