Tag: programming languages

Questions Related to programming languages

RMI stands for Remote Method Instance

technology programming languages

  1. True

  2. False

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Correct Option: B

SDK stands for Software Development Kit
technology programming languages

  1. True

  2. False

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Correct Option: A

JSF stands for JavaServer Faces

technology programming languages

  1. True

  2. False

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Correct Option: A

JTA stands for Java Transport API
technology programming languages

  1. True

  2. False

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Correct Option: B

JSTL stands for Java Stanadard Tag Library
technology programming languages

  1. True

  2. False

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Correct Option: A

Which is true?
technology programming languages

  1. "X extends Y" is correct if and only if X is a class and Y is an interface

  2. "X extends Y" is correct if and only if X is an interface and Y is a class

  3. "X extends Y" is correct if X and Y are either both classes or both interfaces

  4. "X extends Y" is correct for all combinations of X and Y being classes and/or interfaces

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Correct Option: C

Which is true about an anonymous inner class?

technology programming languages

  1. It can extend exactly one class and implement exactly one interface.

  2. It can extend exactly one class and can implement multiple interfaces.

  3. It can extend exactly one class or implement exactly one interface.

  4. It can implement multiple interfaces regardless of whether it also extends a class.

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Correct Option: C 
class Boo {
    Boo(String s) {}
    Boo() {}
}
class Bar extends Boo {
    Bar() {}
    Bar(String s) {
        super(s);
    }
    void zoo() { 
         // insert code here      
    }  
}

which one create an anonymous inner class from within class Bar?
technology programming languages

  1. Boo f = new Boo(24) { };

  2. Boo f = new Bar() { };

  3. Bar f = new Boo(String s) { };

  4. Boo f = new Boo.Bar(String s) { };

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Correct Option: B

Which is true about a method-local inner class?
technology programming languages

  1. It must be marked final.

  2. It can be marked abstract.

  3. It can be marked public.

  4. It can be marked static.

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Correct Option: B

Which constructs an anonymous inner class instance?
technology programming languages

  1. Runnable r = new Runnable() { };

  2. Runnable r = new Runnable(public void run() { });

  3. Runnable r = new Runnable { public void run(){}};

  4. System.out.println(new Runnable() {public void run() { }});

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Correct Option: D