Which of the following will produce a value of 22 if x=22.9:
Ceil(x)
Round(x)
Rint(x)
Abs(x)
Correct Answer :
C. Rint(x)
Related Questions
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
When present, package must be the first no comment statement in the file.
True
False
We can add more than one class(es) at the time of compilation Java Beans.
True.
False.
Give file is a file object, which of the following are legal statements to create a new file.
file.create();
FileOutputStream fos=new FileOutputStream(file);
FileInputStream fis=new FileInputStream(file);
all of the above
The default case is always required in the switch selection structure.
True
False
Members of a class specified as private are accessible only to the methods of the class.
True
False
Submit button always fires doPost(...)
True
False
Frames and applets cannot be used together in the same program.
True
False
Two methods cannot have the same name in Java.
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
The methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
Which of the following will produce a value of 10 if x = 9.7?
floor(x)
abs(x)
rint(x)
round(x)
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
A panel can not be added to another panel.
True
False
In the code below, what data types the variable x can have?
byte b1 = 5;
byte b2 = 10;
x = b1 * b2;
int short
All methods in an abstract class must be declared abstract.
True
False
Which of the following methods belong to the String class?
length()
compareTo()
substring()
all of the them
In order to connect to a database through java program we must create _______-
Connection, Statement, ResultSet
Connection, ResultSet
Statement< ResultSet
Connection, Statement
A Java monitor must either extend thread class or implement Runnable interface.
True
False
It is perfectly legal to assign a subclass object to a supper class reference.
True
False
It is an error to have a method with the same signature in both the super class and its subclass.
True
False
To delete a file, we can use an instance of class file.
True
False
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
Declarations can appear anywhere in the body of a Java method.
True
False
Which of the following keywords are used to control access to a class member?
default
protected
interface
None of the above
Which of the following represent legal flow control statements?
break();
continue(inner);
return;
exit();
The programmer must explicitly create the system .in and system .out objects.
True
False
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
For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
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");