Tag: programming languages

Questions Related to programming languages

what could be replaced with the "XX" in the following program to compile and run sucessfully? select four choices. class Parent{ public void amethod(int i) throws IOException{ } } public class Child extends Parent{ //XX }
technology programming languages

  1. public void amethod(int i) throws FileNotFoundException{ }

  2. public void amethod(int i) throws IOException, RuntimeException{ }

  3. public void amethod(int i) throws RuntimeException{ }

  4. public void amethod(int i) throws Exception{ }

  5. public void amethod(int i) { }

  6. public void amethod(int i) throws Throwable{ }

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Correct Option: A,B,C,E

which of the following modifiers can be applied to top level class(i.e., a class which is not enclosed by other class) select all that apply

technology programming languages

  1. private

  2. protected

  3. transient

  4. public

  5. final

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Correct Option: D,E

Class Foo{ Int num; Baz comp=new Baz(); } Class Bar{ Boolean flag; } Class Baz extends Foo{ Bar thing=new Bar(); Double limit; }
technology programming languages

  1. A Bar is a Baz

  2. A Foo has a Bar

  3. A Baz is a Foo

  4. A Foo is a Baz

  5. A Baz has a Bar

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Correct Option: C,E

Given: class Waiter{ void takeOrders(){ } void serveFood(){ } void takeOrdersAndServe(){ takeOrders(); serveFood(); } }
technology programming languages

  1. It exhibits high cohesion

  2. It exhibits low cohesion

  3. It exhibits tight coupling

  4. It exhibits loose coupling

  5. None of the Above

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Correct Option: B

Select correct answer Given: Class A{ A(){ System.out.print(“A”); } } Class B extends A{ B(){ this(4); super(); System.out.print(“B”); } B(int i){ System.out.print(“C”); } }

technology programming languages

  1. Does not compile

  2. prints "ABC"

  3. prints "ACB"

  4. prints "CAB"

  5. run time exception

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Correct Option: A

Which of the most suitable java collection class for storing various currencies and their equivalent prices in USD if multiple threads access and modify this data? It is required that class should be synchronized inherently
technology programming languages

  1. HashSet

  2. Vector

  3. HashMap

  4. TreeMap

  5. None of the above

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Correct Option: E

Which java collection class can be used to maintain the entries in the order in which they were last accessed?
technology programming languages

  1. java.util.HashSet

  2. java.util.LinkedHashMap

  3. java.util.Hashtable

  4. java.util.Vector

  5. none of these

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Correct Option: E

How does the following macros will resolve? What will be the output in log file? %let one=two; %let two=three; %let three=one; %put &one; %put &&one; %put &&&one;

technology programming languages

  1. two, two, one

  2. two, three, one

  3. two, two, three

  4. two, two, two

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Correct Option: C

Which date function advances a date, time or date/time value by a given interval?

technology programming languages

  1. INTCK

  2. INTNX

  3. INTCX

  4. INTNK

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Correct Option: B

How many observations will be there in the output dataset TEMP? Data temp; Set test (firstobs=50 obs=450); Run;
technology programming languages

  1. 450

  2. 401

  3. 400

  4. 500

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Correct Option: B