We can add more than one class(es) at the time of compilation Java Beans.
True.
False.
Correct Answer :
A. True.
Related Questions
If m and n are int type variables, what will be the result of the expression
'm % n' when m = -14 and n = -3?
4
2
-2
-4
Which of the following are keywords?
integer
default
Boolean
Object
To delete a file, we can use an instance of class file.
True
False
Session bean
Represents a single client inside the application server
Can not be shared
Is not persistent
Satisfies all of the above conditions
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.
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 can add more than one class(es) at the time of compilation Java Beans.
True.
False.
It is an error to catch the same type of exception in two different catch blocks associated with a particular try block.
True
False
The break statement is required in the default case of a switch selection structure.
True
False
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
Which of the following statements are valid array declarations?
int number();
float average[];
double[] marks;
counter int[];
The expression (x == y && a<b) is true If either x == y is true or a<b is true.
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)
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
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
The default case is always required in the switch selection structure.
True
False
Message-Driven beans act as a listener for the Java Message Service API, processing messages synchronously
True
False
Members of a class specified as private are accessible only to the methods of the class.
True
False
Which of the following string can be used as mode string for creating a RandomAccessFile object?
"rw"
"wr"
"0"
'w''
It is an error to have a method with the same signature in both the super class and its subclass.
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
An EJB is a server-side component that encapsulates the business logic of an application
True
False
In RMI we invoke client method from remote server
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");
It is perfectly legal to refer to any instance variable inside of a static method.
True
False
Which of the following represent legal flow control statements?
break();
continue(inner);
return;
exit();
In evaluating a logical expression of type 'Boolean expression 1&& Boolean expression 2', both the Boolean expressions are not always evaluated.
True
False
Which of the following methods can be used to change the size of a
size() *
resize()
component
dimension()
setSize()
size()
What is error in the following class definitions?
abstract class xy {
abstract sum(int x, int y) {
}
}
abstract sum(int x, int y) {
}
}
class header is not define properly
constructor is no defined
method is not defined properly
no error
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