When you use an %IF-%THEN statement in your macro program
you must place %DO and %END statements around code that describes the conditional action, if that code contains multiple statements.
the %ELSE statement is optional.
you cannot refer to DATA step variables in the logical expression of the %IF statement.
all of the above.
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?
Data set null does not exist. data set test
data set test Data set null does not exist.
ERROR : null not indentified.
Data set null does not exist. Data set test does not exist.
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:
When a method in a class overrides a method in a superclass
When a method in an interface overrides a method in a superinterface
For overridden constructors
When a method in a class implements a method in an interface
What should be the order of the @param tag when there are multiple parameters in the declaration ?
Alphabetical order
Random. No order.
Argument-declaration order
Based on the datatype
Which of the following tag is mandatory while using the Javadoc tool ?
@param
@throws
@see
@author
Which tag is synonymous to the @throws tag ?
@exception
@throwing
@threw
@except
Which tag adds a comment indicating that the API should no longer be used ?
@since
@dontUse
@deprecated
@thows
Identify whether the following statement is true or false.The finally block is executed when an exception is thrown, even if no catch matches it.
True
False
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));...
falsefalsefalsedar
falsetruefalsePoddar
Compiler Error
truetrueFALSEdar
What is main objective of Component Based Development (CBD) approach?
Re usability
Portability
Functionality
Efficiency