Tag: programming languages

Questions Related to programming languages

Identify whether the following statement is true or false.
The keyword synchronized can be used with only a method
technology programming languages

  1. True

  2. False

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Correct Option: A

Identify whether the following statement is true or false.
The run () method should necessary exist in classes created as subclass of Thread
technology programming languages

  1. True

  2. False

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Correct Option: A

What is the purpose of the toolkit in the Abstract Window Toolkit (AWT)?
technology programming languages

  1. To repair broken frames

  2. To create custom components

  3. An interface between the abstract window layer and windowing implementation

  4. To facilitate multicolor printing

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Correct Option: C

What is an interface class?
technology programming languages

  1. A collection of method declarations and constant values

  2. An abstract base class

  3. A way to get multiple inheritance

  4. A way to inherit variables and method implementations

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Correct Option: A

Vertical and horizontal scroll bar increments are how many units by default?
technology programming languages

  1. 12.5 units

  2. 100 units

  3. 5 units

  4. 1 unit

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Correct Option: D

Reflection (introspection) is querying a class about its properties, and operating on methods and fields by the name for a given object instance. Why is reflection possible in the Java language?
technology programming languages

  1. Late binding

  2. Early binding

  3. Java developers are very introspective people

  4. Reflection is possible in all languages

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Correct Option: A

The StringBuffer class supports what type of strings?
technology programming languages

  1. Mutable (changeable)

  2. Immutable (unchangeable)

  3. Violins and cellos

  4. Rotated and scaled

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Correct Option: A

Why does an Assert class that checks program assertions need several implementations of its assert method?
technology programming languages

  1. The Java language has loose type checking

  2. The Java language has tight type checking

  3. To keep tabs on garbage collection

  4. You never know how many you need, so you should always cover the most obvious cases

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Correct Option: B

Handling an exception allows a program to terminate execution
technology programming languages

  1. True

  2. False

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Correct Option: B

Java's exception handling mechanism keeps error-processing code in the main line of a program's code to improve program clarity.
technology programming languages

  1. True

  2. False

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Correct Option: B