forName() is a static factory method
True
False
Correct Answer :
A. True
Related Questions
Which of the following are not keywords?
NULL
Implements
Protected
None of the above
A package is a collection of
classes
interface
editing tools
classes and interfaces
Which of the following string can be used as mode string for creating a RandomAccessFile object?
"rw"
"wr"
"0"
'w''
Submit button always fires doPost(...)
True
False
It is perfectly legal to assign a subclass object to a supper class reference.
True
False
executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.
A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.
True
False
One the features of is that an array can store many different types of values.
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
Which of the following are the wrapper classes?
Random
Vector
Byte
all of the above
If you want to assign a value of 99 to the variable year, then which of the following lines can be used within an <applet> tags?
number=getParameter(99)
<number==99>
<param = radius value ==99>
In a single Servlet class we can use____________
doGet(...) method only
doPost(...) method only
doGet(...) method and doPost(...) method both at a time.
Either 'a' or 'b'
The use of protected keyword to a member in a class will restrict its visibility as follows:
Visibility only in the class and its subclasses in the same package.
Visibility only inside the same package.
Visibility in all classes in the same package and subclasses in other packages.
Visibility only in the class where it is declared.
Which of the following methods can be used to draw the outline of a square?
fillRect()
drawLine()
drawString()
all of the above
Which exception is thrown by the read() method of InputStream class?
IOException
FileNotFoundException
ReadException
None of the above
Which of the following statements are true?
UTF characters are all 24 bits.
Reader class has methods that can read integers and floats.
Unicode characters are all 16 bits.
all of the above
An individual array element that is passed to a method and modified in that method will contain the modified value when the called method completes execution.
True
False
We would like to make a member of a class visible in all subclasses regardless of what package they are in. Which one of the following keywords would achieve this?
private
protected
public
private protected
It is an error to have a method with the same signature in both the super class and its subclass.
True
False
All methods in an abstract class must be declared abstract.
True
False
A constructor must always invoke its supper class constructor in its first statement.
True
False
Servlet has ___________
init method
doGet(------) method
All of the above methods.
We can over load methods with differences only in their return type.
True
False
The keywords reserved but not used in the initial version of Java re:
Synchronized
Boolean
union
goto
The modulus operator (%) can be used only with Integer operands.
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 of the following statements are valid array declarations?
int number();
float average[];
double[] marks;
counter int[];
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
Which of the following control expressions are valid for an if statement?
an integer expression
a Boolean expression
either A or B
Neither A or B
Servlet can have ___________
get method and post method
get method or post method
Either of the above