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Java SE 7 Programmer II

Question No: 91

Given:

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What is the most likely result?

  1. size: 4, elements: 11 22 33 44

  2. size: 5, elements: 11 22 33 44

  3. size: 4, elements: 11 22 33 44 77

  4. size: 5, elements: 11 22 33 44 77

  5. a ConcurrentModification Exception is thrown

Answer: B

Question No: 92

Given this error message when running your application:

Exception in thread quot;mainquot; java.util.MissingResourceException: Can#39;t find bundle for base name

MessageBundle, locale

And given that the MessageBundle.properties file has been created, exists on your disk, and is properlyformatted.

What is the cause of the error message?

  1. The file is not in the environment path.

  2. The file is not in the classpath.

  3. The file is not in the javapath.

  4. You cannot use a file to store a ResourceBundle.

Answer: D Explanation:

ResourceBundle.getBundle is using a resource name; it isn#39;t called ResourceBundle for nothing.

You can create a custom ClassLoader and use that to load the data.

Question No: 93

Which two code blocks correctly initialize a Locale variable?

  1. Locale loc1 = quot;UKquot;;

  2. Locale loc2 = Locale.getInstance(quot;ruquot;);

  3. Locale loc3 = Locale.getLocaleFactory(quot;RUquot;);

  4. Locale loc4 = Locale.UK;

  5. Locale loc5 = new Locale(quot;ruquot;, quot;RUquot;);

Answer: D,E Explanation:

The Locale class provides a number of convenient constants that you can use to create Locale objects forcommonly used locales.

For example, the following creates a Locale object for the United States: Locale.US

E: Create a Locale object using the constructors in this class: Locale(String language)

Locale(String language, String country)

Locale(String language, String country, String variant) Reference: java.utilClass Locale

Question No: 94

Given the code fragment: SimpleDataFormat sdf;

Which code fragment displays the three-character month abbreviation?

  1. SimpleDateFormat sdf = new SimpleDateFormat (quot;mmquot;, Locale.UK); System.out.println (quot;Result:quot;

    sdf.format(new Date()));

  2. SimpleDateFormat sdf = new SimpleDateFormat (quot;MMquot;, Locale.UK); System.out.println (quot;Result:quot;

    sdf.format(new Date()));

  3. SimpleDateFormat sdf = new SimpleDateFormat (quot;MMMquot;, Locale.UK); System.out.println (quot;Result:quot;

    sdf.format(new Date()));

  4. SimpleDateFormat sdf = new SimpleDateFormat (quot;MMMMquot;, Locale.UK); System.out.println (quot;Result:quot;

sdf.format(new Date()));

Answer: C

Question No: 95

Given three resources bundles with these values set for menu1: (the default resource bundle in US English.)

English US Resource Bundle Menu1 = small

French Resource Bundle Menu1 = petit

Chinese Resource Bundle Menu1 =

And given the code fragment:

Locale.setDefault(new Locale(quot;esquot;, quot;ESquot;)); // Set default to Spanish and Spain Locale loc1 = Locale.getDefault();

ResourceBundle message = ResourceBundle.getBundle(quot;MessageBundlequot;, loc1); System.out.println(message.getString(quot;menu1quot;));

What is the result?

  1. No message is printed

  2. petit

  3. small

  4. A runtime error is produced

Answer: D

Explanation: Compiles fine, but runtime error when trying to access the Spanish Resource bundle (which doesnot exist):

Exception in thread quot;mainquot; java.util.MissingResourceException: Can#39;t find bundle for base name

messageBundle, locale es_ES

Question No: 96

Which is a factory method from the java.text.NumberFormat class?

  1. format (long number)

  2. getInstance()

  3. getMaxiraumFractionDigits ()

  4. getAvailableLocales ()

  5. isGroupingUsed()

Answer: B Explanation:

To obtain a NumberFormat for a specific locale, including the default locale, call one ofNumberFormat#39;s factory methods, such as getInstance().

Reference:java.textClass DecimalFormat

Question No: 97

Given the code format: SimpleDateFormat sdf;

Which code statements will display the full text month name?

  1. sdf = new SimpleDateFormat (quot;mmquot;, Locale.UK); System.out.println(quot;Result:quot;, sdf.format(new date()));

  2. sdf = new SimpleDateFormat (quot;MMquot;, Locale.UK); System.out.println(quot;Result:quot;, sdf.format(new date()));

  3. sdf = new SimpleDateFormat (quot;MMMquot;, Locale.UK); System.out.println(quot;Result:quot;, sdf.format(new date()));

  4. sdf = new SimpleDateFormat (quot;MMMMquot;, Locale.UK); System.out.println(quot;Result:quot;, sdf.format(new date()));

Answer: D Explanation:

Typical output would be Current Month in M format: 2

Current Month in MM format: 02 Current Month in MMM format: Feb

Current Month in MMMM format: February

Question No: 98

Select four examples that initialize a NumberFormat reference using a factory.

  1. NumberFormat nf1 = new DecimalFormat();

  2. NumberFormat nf2 = new DecimalFormat(quot;0.00quot;) ;

  3. NumberFormat nf3 = NumberFormat.getInstance();

  4. NumberFormat nf4 = NumberFormat.getIntegerInstance();

  5. NumberFormat nf5 = DecimalFormat.getNumberInstance ();

  6. NumberFormat nf6 = NumberFormat.getCurrencyInstance () ;

Answer: C,D,E,F Explanation: getInstance

public static finalNumberFormatgetInstance()

Returns the default number format for the current default locale. The default format is one of the styles

provided by the other factory methods: getNumberInstance(E), getIntegerInstance(D), getCurrencyInstance(F)

or getPercentInstance. Exactly which one is locale dependant.

C: To obtain a NumberFormat for a specific locale, including the default locale, call one of NumberFormat#39;sfactory methods, such as getInstance().

E:To obtain standard formats for a given locale, use the factory methods on NumberFormat such asgetNumberInstance. These factories will return the most appropriate sub-class of NumberFormat for a givenlocale.

F:To obtain standard formats for a given locale, use the factory methods on NumberFormat such asgetInstance or getCurrencyInstance.

Reference:java.textClass NumberFormat

Question No: 99

Given the Greetings.properties file, containing:

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What is the result?

  1. Compilation fails

  2. HELLO_MSG

  3. GOODGYE_NSG

  4. Hello, everyone!

  5. Goodbye everyone!

Answer: A Explanation:

The code will not compile.

The problem is the following line: System.out.println(resource.getObject(1));

In particular getObject(1) throws the following error:

Exception in thread quot;mainquot; java.lang.RuntimeException: Uncompilable source code – Erroneous sym type:

lt;anygt;.loadResourceBundle

Note:getObject(String key) !!! String keyGets an object for the given key from this resource bundle or one of its parents.

Question No: 100

You have been asked to create a ResourceBundle file to localize an application.

Which code example specifies valid keys menu1 and menu2 with values of File Menu and View Menu?

  1. lt;key name =quot;menu1quot;gt;File Menult;/keygt;

    lt;key name =quot;menu1quot;gt;View Menult;/keygt;

  2. lt;keygt; menu1lt;/keygt;lt;File Menugt;File Menu lt;/valuegt;

    lt;keygt; menu1lt;/keygt;lt;File Menugt;View Menu lt;/valuegt;

  3. menu1m File menu, menu2, view menu

  4. menu1 = File Menu menu2 = View Menu

Answer: D Explanation:

A properties file is a simple text file. You can create and maintain a properties file with just aboutany text editor.

You should always create a default properties file. The name of this file begins with the base name of your

ResourceBundle and ends with the .properties suffix. In the PropertiesDemo program the base name is

LabelsBundle. Therefore the default properties file is called LabelsBundle.properties. The following examplefilecontains the following lines:

# This is the default LabelsBundle.properties file s1 = computer

s2 = disk

s3 = monitor s4 = keyboard

Note that in the preceding file the comment lines begin with a pound sign (#). The other lines contain key-valuepairs. The key is on the left side of the equal sign and the value is on the right. For instance, s2 is the key thatcorresponds to the value disk. The key is arbitrary. We could have called s2 something else, like msg5 ordiskID. Once defined, however, the key should not change because it is referenced in the source code.

Thevalues may be changed. In fact, when your localizers create new properties files to accommodate additionallanguages, they will translate the values into various languages.

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