Tag: programming languages

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Questions Related to programming languages

Multiple choice technology programming languages

data test; a='A dataset'; run; %macro opends(name); %if %sysfunc(exist(&name)) %then %do; %let dsid=%sysfunc(open(&name,i)); %put data set &name; %end; %else %put Data set &name does not exist.; %mend opends; %opends(null); %opends(test); What will be written in the Log?

  1. Data set null does not exist. data set test

  2. data set test Data set null does not exist.

  3. ERROR : null not indentified.

  4. Data set null does not exist. Data set test does not exist.
Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology programming languages

You can avoid re-typing doc comments by being aware of how the Javadoc tool duplicates (inherits) comments for methods that override or implement other methods. This occurs in three cases:

  1. When a method in a class overrides a method in a superclass

  2. When a method in an interface overrides a method in a superinterface

  3. For overridden constructors

  4. When a method in a class implements a method in an interface
Reveal answer Fill a bubble to check yourself
A,B,D Correct answer
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Multiple choice technology programming languages

What is the output of the following,
...
StringBuffer sb1 = new StringBuffer("Debopam");
StringBuffer sb2= new StringBuffer("Debopam ");
String ss1 = " Debopam ";
System.out.println(sb1==sb2);
System.out.println(sb1.equals(sb2));
System.out.println(sb1.equals(ss1));
System.out.println("Poddar".substring(3));
...

  1. false<new line>false<new line>false<new line>dar

  2. false<new line>true<new line>false<new line>Poddar

  3. Compiler Error

  4. true<new line>true<new line>FALSE<new line>dar
Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation