Two methods cannot have the same name in Java.
True
False
Correct Answer :
B. False
Related Questions
Members of a class specified as private are accessible only to the methods of the class.
True
False
It is perfectly legal to refer to any instance variable inside of a static method.
True
False
Which are the valid ways to create DataInputStream streams?
new DataInputStream(new File("in.dat"));
new DataInputStream(new FileInputStream("in.dat"));
new DataInputStream("in.dat");
new DataInputStream("in.data","r");
The break statement is required in the default case of a switch selection structure.
True
False
A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.
True
False
Consider the following class definition.
Class Student extends String
{
}
What happens when we try to compile this class?
Will not compile because class body is not defined
Will not compile because class is not declared public
Will compile successfully.
Will not compile because String is abstract
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
When X is a positive number the operations x>> 2 and x>>>2 both produce the same result.
True
False
It is an error to have a method with the same signature in both the super class and its subclass.
True
False
A class may be both abstract and final.
True
False
EJBs can be of the following type(s)
None of the above
Entity Bean
Session Bean
Message-driven bean
All of the above
An EJB is a server-side component that encapsulates the business logic of an application
True
False
A string object can not be modified after it is created.
True
False
Consider the following code snippet:
try
{
int x=0; int y=50/x;
System.out.println("Division by zero");
}
catch(ArithmeticException e)
{
System.out.println("catch block");
}
What will be the output?
{
int x=0; int y=50/x;
System.out.println("Division by zero");
}
catch(ArithmeticException e)
{
System.out.println("catch block");
}
Error. Won't compile
Division by zero
Catch block
Division by zero catch block
executeUpdate automatically updates data because___________
auto commit is on, by default
It performs a hidden commit statement as well
Does not commit
None of the above.
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
True.
False.
The length of a string object 's1' can be obtained using the expression s1.length.
True
False
It is an error if a class with one or more abstract methods is not explicitly declared abstract.
True
False
The default case is always required in the switch selection structure.
True
False
Any method in a supper class can be over ridden in its subclass.
True
False
In order to connect to a database through java program we must create _______-
Connection, Statement, ResultSet
Connection, ResultSet
Statement< ResultSet
Connection, Statement
All methods in an abstract class must be declared abstract.
True
False
DataInput is
An abstract class defined is java.io.
A class we can use to read primitive data types.
An interface that defines methods to open files.
An interface that defines methods to read primitive data types.
Which javadoc tag is used to denote a comment for methods parameters?
@method
@parameter
@argument
@param
Connection, Statement are interfaces and ResultSet is a class.
True.
False.
The methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
When we implement an interface method, it should be declared as public.
True
False
Consider the following class definitions:
class maths {
student student1;
}
class student {
String name;
}
student student1;
}
class student {
String name;
}
This code represents:
an 'is a' relationship
a 'has a' relationship
both
neither
Which of the following statements are true?
An abstract class may not have any final methods?
A final class may not have any abstracts methods.
Transient variables must be static.
all of the above