The length of a string object 's1' can be obtained using the expression s1.length.
True
False
Correct Answer :
B. False
Related Questions
The setBackground() method is part of the class
Applet
Component
Container
Object
A panel can not be added to another panel.
True
False
A constructor must always invoke its supper class constructor in its first statement.
True
False
Which of the following represent legal flow control statements?
break();
continue(inner);
return;
exit();
DriverManager.getConnection("jdbc:odbc:dsn_name") method does not depend on the class.forName(...) method.
True.
False.
The name of a Java program file must match the name of the class with the extension Java.
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
Which of the following methods can be used to draw the outline of a square?
fillRect()
drawLine()
drawString()
all of the above
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.
Frames and applets cannot be used together in the same program.
True
False
Every method of a final in class is implicitly final.
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.
Declarations can appear anywhere in the body of a Java method.
True
False
The keywords reserved but not used in the initial version of Java re:
Synchronized
Boolean
union
goto
The expression (x == y && a<b) is true If either x == y is true or a<b is true.
True
False
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
The length of a string object 's1' can be obtained using the expression s1.length.
True
False
A package is a collection of
classes
interface
editing tools
classes and interfaces
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
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
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
We can add more than one class(es) at the time of compilation Java Beans.
True.
False.
EJBs can be of the following type(s)
None of the above
Entity Bean
Session Bean
Message-driven bean
All of the above
Every call to wait has a corresponding call to notify that will eventually end the wafting.
True
False
When we implement an interface method, it should be declared as public.
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.
Two methods cannot have the same name in Java.
True
False
In RMI we invoke client method from remote server
True
False
In RMI before running the client program we must start RMI Registry.
True.
False.