Which of the following methods can be used to draw the outline of a square?
fillRect()
drawLine()
drawString()
all of the above
Correct Answer :
B. drawLine()
Related Questions
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
The modulus operator (%) can be used only with Integer operands.
True
False
It is an error to have a method with the same signature in both the super class and its subclass.
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
When present, package must be the first no comment statement in the file.
True
False
Any class may be inherited by another class in the same package.
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;
break();
continue(inner);
all of the above
A package is a collection of
classes
interface
editing tools
classes and interfaces
EJBs can be of the following type(s)
None of the above
Entity Bean
Session Bean
Message-driven bean
All of the above
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.
A final class may not have any abstract method.
True
False
Connection, Statement are interfaces and ResultSet is a class.
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
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
The break statement is required in the default case of a switch selection structure.
True
False
Which of the following methods can be used to draw the outline of a square?
fillRect()
drawLine()
drawString()
all of the above
When X is a positive number the operations x>> 2 and x>>>2 both produce the same result.
True
False
class.forName(...) creates an instance of java ODBC driver
True
False
With javadoc, which of the following denotes a javadoc comment?
//#
/*
/**
//**
A class may be both abstract and final.
True
False
In RMI we invoke client method from remote server
True
False
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
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
Servlet has ___________
init method
doGet(------) method
All of the above methods.
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 programmer must explicitly create the system .in and system .out objects.
True
False
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
A constructor must always invoke its supper class constructor in its first statement.
True
False
For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
True.
False.