The modulus operator (%) can be used only with Integer operands.
True
False
Correct Answer :
B. False
Related Questions
An EJB is a server-side component that encapsulates the business logic of an application
True
False
A package is a collection of
classes
interface
editing tools
classes and interfaces
The name of a Java program file must match the name of the class with the extension Java.
True
False
A string object can not be modified after it is created.
True
False
The programmer must explicitly create the system .in and system .out objects.
True
False
Given the code
String s = new String("abc");
Which of the following calls are valid?
s.toUpperCase()
s.append("xyz")
s.setCharAt(1<'A')
all of the above
Any method in a supper class can be over ridden in its subclass.
True
False
All methods in an abstract class must be declared abstract.
True
False
Throwing an exception always causes program termination.
True
False
Which key word can protect a class in package from accessibility by the classes outside the package?
private
protected
final
don't use any keyword at all(make it default)
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
The expression (x == y && a<b) is true If either x == y is true or a<b is true.
True
False
Which of the following methods can be used to remove a component from the display?
remove()
desappear()
hide()
move()
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
class.forName(...) creates an instance of java ODBC driver
True
False
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
Which of the following statements are valid array declarations?
int number();
float average[];
double[] marks;
counter int[];
It is an error to catch the same type of exception in two different catch blocks associated with a particular try block.
True
False
What does the following line of code do?
TextField text=new TextField(10);
Creates text object that can hold 10 rows of text.
Creates text object that can hold 10 columns of text.
Creates the object text and initializes it with the value 10.
The code is illegal.
Declarations can appear anywhere in the body of a Java method.
True
False
Which of the following are keywords?
integer
default
Boolean
Object
The setBackground() method is part of the class
Applet
Component
Container
Object
Which of the following string can be used as mode string for creating a RandomAccessFile object?
"rw"
"wr"
"0"
'w''
Which of the following represent legal flow control statements?
break;
break();
continue(inner);
all of the above
Any class may be inherited by another class in the same package.
True
False
The concept of multiple inheritance is implemented in Java by
extending two or more classes
extending one class and implementing one or more interfaces
all the above
Which of the following will produce a value of 10 if x = 9.7?
floor(x)
abs(x)
rint(x)
round(x)
Which exception is thrown by the read() method of InputStream class?
IOException
FileNotFoundException
ReadException
None of the above
DriverManager.getConnection("jdbc:odbc:dsn_name") method does not depend on the class.forName(...) method.
True.
False.
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.