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a. try block followed by catch b. try block followed by finally c. try block followed by catch block and then finally d. try block without catch or finally block
Ans. try block without catch or finally block
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try block followed by catch block and then finally
try block without catch or finally block
Q1051. Which of the following is not the difference between Singleton and Static class ( Class with static members only ) ?
a. Only one object can be created for Singleton class whereas No objects are created for static class. b. Singleton class instance is initiated using new keyword whereas static class instance is created using static method. c. Singleton class can be serialized whereas Static class cannot be. d. Singleton Class can participate in runtime Polymorphism whereas Static class cannot.
Ans. Singleton class instance is initiated using new keyword whereas static class instance is created using static method.
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Q1054. Which of the following is not true for final variables ?
a. They cannot be changed after initialization b. They can be initialized within static method c. They can be declared and initialized together at the same place d. They can be initialized within constructor
Ans. They can be initialized within static method
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Q1057. Which of the following is false about var args ?
a. Var Args argument should have data type followed by three dots b. Three dots should be consecutive and not separated by even space c. We cannot have space before and after the dots d. If there is a var args in the method, it should be only one and the last one.
Ans. We cannot have space before and after the dots
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Q1067. Which of the following do you think is the primary reason you would never use a static class even the application doesn't need multiple requests or threads ?
a. Serialization
b. Runtime Polymorphism
c. Lazy Loading
d. Memory
Ans. Runtime Polymorphism
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LikeDiscussCorrect / Improve  static class   static vs singleton   java   oops   objects  Runtime Polymorphism
Rarely asked as it was introduced with Java 8.
Q1068. Which keyword specify that a variable is effectively final ? a. final b. No Keyword c. Both of the above d. None of the above
a. A Sequence File contains a binary encoding of an arbitrary number of homogeneous writable objects. b. A Sequence File contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be of same type. c. A Sequence File contains a binary encoding of an arbitrary number of heterogeneous writeable objects. d. A Sequence File contains a binary encoding of an arbitrary number of Writable Comparable objects, in sorted order.
Ans. A Sequence File contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be of same type.
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a. One Key and One Value b. Multiple Keys and Multiple associated Values c. Multiple Keys and One associated values with each d. One key and associated values.
Ans. One key and associated values.
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LikeDiscussCorrect / Improve  hadoop   bigdata   big data   map-reduce   map reduce   reduce function