Java MCQ Questions for Placement


Q.  What method Returns an enumeration of the keys which includes those keys found in the default property list?

a. Enumeration keys()
b. Enumeration elements()
c. Enumeration propertyNames()
d. Both A & B


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Which JSP Action tags is used to include the content of another resource, it may be jsp, html or servlet?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which model does a Java applet or application talks directly to the data source?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which method is used to suspend threads that don’t need to run when the applet is not visible?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which package provides many event classes and Listener interfaces for event handling?
Category: Placement Tests,   Published by: teswesm
MCQs:  Wrapper classes are not used to convert any data type into an object.
Category: Placement Tests,   Published by: teswesm
MCQs:  Which method of URL class represents a URL and it has complete set of methods to manipulate URL in Java?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which classes are used for connection-less socket programming?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which is not a W3C-recommended specification?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which character in the XML Element will generate an error because the parser interprets it as the start of a new element?
Category: Placement Tests,   Published by: teswesm
MCQs:  If a subclass has the same method as declared in the parent class it is known as ______.
Category: Placement Tests,   Published by: teswesm
MCQs:  Which type of inheritance one super-class have more than one sub-class?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which stream does Java application uses to read data from a source, it may be a file, an array, peripheral device or socket?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which method is used in thread class to starts the execution of the thread?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which packages are also termed as Java API Packages?
Category: Placement Tests,   Published by: teswesm
MCQs:  Which symbol is used to contain the values of automatically initialized arrays. Also used to define a block of code, for classes, methods, and local scopes?
Category: Placement Tests,   Published by: teswesm
MCQs:  PatternSyntaxException Class Methods is an unchecked exception that indicates a syntax error in a regular expression pattern.
Category: Placement Tests,   Published by: teswesm
MCQs:  What is the advantage of Method Overloading?
Category: Placement Tests,   Published by: teswesm
MCQs:  Garbage Collection is the process of reclaiming the runtime unused memory automatically.
Category: Placement Tests,   Published by: teswesm
MCQs:  How many steps are used to connect any java application using JDBC?
Category: Placement Tests,   Published by: teswesm
MCQs:  What is the lifecycle of a servlet?
Category: Placement Tests,   Published by: teswesm