The import statement is always the first no comment statement in a Java program files.
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
In order to connect to a database through java program we must create _______-
Connection, Statement, ResultSet
Connection, ResultSet
Statement< ResultSet
Connection, Statement
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
All the bitwise operators have the same level of precedence in Java.
True
False
It is an error if a class with one or more abstract methods is not explicitly declared abstract.
True
False
Which of the following methods can be used to draw the outline of a square?
fillRect()
drawLine()
drawString()
all of the above
Which of the following represent legal flow control statements?
break;
break();
continue(inner);
all of the above
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 methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
The length of a string object 's1' can be obtained using the expression s1.length.
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
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
What is java -g used for?
Using the jdb tool
Executing a class with optimization turned off
To provided information about deprecated methods
Non of the above
Throwing an exception always causes program termination.
True
False
executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.
putValue(...) method takes _____________________-
Two arguments of object type
First one is of a character type and second one is of an object type
First one is of an object type and second one is of a character type
None of the above.
Submit button always fires doPost(...)
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.
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
Which of the following command lines options generates documentation for all classes and methods?
-protected
-public
-private
-encoding
A static class method can be invoked by simply using the name of the method alone.
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
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
Connection, Statement are interfaces and ResultSet is a class.
True.
False.
It is an error to have a method with the same signature in both the super class and its subclass.
True
False
Which of the following will produce a value of 10 if x = 9.7?
floor(x)
abs(x)
rint(x)
round(x)
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
Every method of a final in class is implicitly final.
True
False
Which javadoc tag is used to denote a comment for methods parameters?
@method
@parameter
@argument
@param