5 Minute Java Test in California, Bay Area, Los Angeles, San Diego, San Francisco, Sunnyvale, Santa Clara, San Jose, Irvine, Sacramento, US

Welcome to the 5 Minute Java Test

Question: Which of the following classes will you use to generate random int values from multiple threads without degrading performance?

Select 1 option(s)

java.lang.Math

java.util.concurrent.MultiThreadedRandom

java.util.concurrent.ThreadLocalRandom

java.util.concurrent.FastRandom

Question: Which of the following are required to construct a Locale?

Select 1 option(s)

culture

country

time zone

region

state

language

Question: java.util.Locale allows you to do which of the following?

Select 2 option(s)

Provide country and language specific formatting for HTML pages.

Provide country and language specific formatting for Dates.

Provide country and language specific formatting for properties files.

Provide country specific formatting for fonts.

Provide country specific formatting for Currencies.

Question:

Assume the following declarations:

class A{ }

class B extends A{ }

class C extends B{ }

class X{

B getB(){ return new B(); }

}

class Y extends X{

//method declaration here

}

Which of the following methods can be inserted in class Y?

Select 2 option(s):

C getB(){ return new C(); }

protected B getB(){ return new C(); }

public C getB(){ return new B(); }

A getB(){ return new A(); }

Question:

In Java, Strings are immutable. A direct implication of this is...

Select 2 option(s)

you cannot compare String objects.

you can change a String object only by the means of its methods.

you cannot extend String class.

you cannot change a String object, once it is created.

you cannot call methods like "1234".replace('1', '9'); and expect to change the original String

Question:

You are working on an application that is NOT structured as a modular application. However, you need to use a third party library that is packaged as a modular jar:-

named abc.utils.jar in your application.

Given that you launch your application using a class named Main, which of the following options should be used to make sure your application is able to access the

classes in the third party jar.

(Assume that abc.utils.jar and your application classes are in current directory.)

Select 1 option(s):

Java -classpath .;abc.utils.jar Main

Extract the contents of abc.utils.jar in current directory and launch Main like this: java Main

Java -classpath . -module abc.utils.jar Main

Java --module-path abc.utils.jar Main