Tag: programming languages

Questions Related to programming languages

class C { public static void main (String[] a1) { System.out.print(a1[1] + a1[2] + a1[3]); }} What is the result of attempting to compile and run the program? java command A B C
technology programming languages

  1. Prints: ABC

  2. Prints BC and Runtime Exception

  3. Prints: BCD

  4. Runtime Exception

  5. None of the above

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Correct Option: B

class C{ static int s; public static void main(String a[]){ C obj=new C(); obj.m1(); System.out.println(s); } void m1(); { int x=1; m2(x); System.out.println(x+""); } void m2(int x){ x=x*2; s=x; }}
technology programming languages

  1. prints 1,2

  2. prints 2,0

  3. prints 2,2

  4. compile time error

  5. Noneofthe above

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Correct Option: A

class C { public static void main(String[] args) { int i1=1; switch(i1){ case 1: System.out.println("one"); case 2: System.out.println("two"); case 3: System.out.println("three"); }}} What is the result of attempting to compile and run the program?
technology programming languages

  1. prints one two three

  2. prints one

  3. compile time error

  4. Runtime exception

  5. None of the above

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Correct Option: A

Each element must be unique Duplicate elements must not replace old elements. Elements are not key/value pairs. Accessing an element can be almost as fast as performing a similar operation on an array. Which of these classes provide the specified features?
technology programming languages

  1. LinkedList

  2. TreeMap

  3. HashMap

  4. HashSet

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Correct Option: D
Explanation:

To solve this question, the user needs to know the characteristics of different Java classes and their features.

  • LinkedList: This class provides an implementation of the List interface using a doubly-linked list. It allows duplicate elements and maintains the order of insertion. However, accessing an element in a LinkedList is slower than accessing an element in an array.

  • TreeMap: This class provides a red-black tree-based implementation of the SortedMap interface. It does not allow duplicate keys but allows duplicate values. It maintains the order of elements based on their natural ordering or a Comparator. Accessing an element in a TreeMap is slower than accessing an element in an array.

  • HashMap: This class provides a hash table-based implementation of the Map interface. It does not allow duplicate keys or values. It does not maintain the order of elements. Accessing an element in a HashMap is almost as fast as accessing an element in an array.

  • HashSet: This class provides a hash table-based implementation of the Set interface. It does not allow duplicate elements. It does not maintain the order of elements. Accessing an element in a HashSet is almost as fast as accessing an element in an array.

Based on the given features, the class that provides all the specified features is:

The Answer is: D, HashSet.

What is necessary for a programming language?
technology programming languages

  1. For loop

  2. While loop

  3. Recursion

  4. All of these

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Correct Option: C

Identify the true statement.
technology programming languages

  1. For efficient program writing, we need syntax which is not strict

  2. For efficient program writing, we need syntax which is strict

  3. For quick compiler design, syntax is strict

  4. Syntax strictness and compiler design are not related

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Correct Option: C

Programming is the job of ____
technology programming languages

  1. Developer

  2. Maintenance Person

  3. Both developer and maintenance person

  4. Tester

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Correct Option: C

Name the type of ABAP Dictionary table that has these characteristics: Same number of fields as the database table Same name as database table Maps 1:1 to database table
technology programming languages

  1. Pooled

  2. Cluster

  3. Transparent

  4. View

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Correct Option: C

An event starts with an event keyword and ends with:
technology programming languages

  1. Program execution

  2. END-OF-EVENT

  3. Another event keyword

  4. END-EVENT

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Correct Option: C

Which of the following is NOT a required attribute when creating an ABAP program? A: Application B: Title C: Status D: Type
technology programming languages

  1. A&C

  2. A&D

  3. C&D

  4. B&D

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Correct Option: A