41. How to get difference between two dates?

1. 1. Time diffInMilli = java.time.Duration.between(dateTime1, dateTime2).toMillis();
      

   
   
   

   2. Date diffInMilli = java.time.Duration.between(dateTime1, dateTime2).toMillis();
      

   
   
   

   3. long diffInMilli = java.time.Duration.between(dateTime1, dateTime2).toMillis();
      

   
   
   

   4. long diffInMilli = java.time.difference(dateTime1, dateTime2).toMillis();
      

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Java 8 provides a method called between which provides Duration between two times.

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42. What does LocalTime represent?

1. 1. Date without time

   
   
   

   2. Date and Time

   
   
   

   3. Date and Time with timezone

   
   
   

   4. Time without Date

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   LocalTime of joda library represents time without date.

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43. What is the range of short data type in Java?

1. 1. -128 to 127

   
   
   

   2. -32768 to 32767

   
   
   

   3. -2147483648 to 2147483647

   
   
   

   4. None of the mentioned.

   
   
   

   5. NA

   
   
   

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1. View Hint View Answer Discuss in Forum

   Short occupies 16 bits in memory.

   Correct Option: B

   Short occupies 16 bits in memory. Its range is from - 2¹⁵ to 2¹⁵ - 1
   i.e. -32768 to 32767.

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44. What is the replacement of joda time library in java 8?

1. 1. java.joda

   
   
   

   2. java.date (JSR-310)

   
   
   

   3. java.jodaTime

   
   
   

   4. java.time (JSR-310)

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   In java 8,we are asked to migrate to java.time (JSR-310) which is a core part of the JDK which replaces joda library project.

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45. How to identify if a timezone is eligible for DayLight Saving?

1. 1. useDaylightTime() of TimeZone class

   
   
   

   2. useDaylightTime() of Date class

   
   
   

   3. useDaylightTime() of Time class

   
   
   

   4. useDaylightTime() of DateTime class

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   public abstract boolean useDaylightTime() is provided in TimeZone class.

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