A panel can not be added to another panel.
True
False
Correct Answer :
B. False
Related Questions
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.
One the features of is that an array can store many different types of values.
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 expression (x == y && a<b) is true If either x == y is true or a<b is true.
True
False
What is wrong in the following class definitions?
abstract class print {
abstract show();
}
class Display extends print {
}
abstract show();
}
class Display extends print {
}
Nothing is wrong
Wrong Method show() should have a return type
Wrong Methods show() is not implemented in Display
Wrong Display does not contain any members.
Which of the following will produce a value of 10 if x = 9.7?
floor(x)
abs(x)
rint(x)
round(x)
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.
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
Which of the following methods can be used to draw the outline of a square?
fillRect()
drawLine()
drawString()
all of the above
Submit button always fires doPost(...)
True
False
Declaring a method synchronized guarantees that the deadlock cannot occur.
True
False
Which of the following control expressions are valid for an if statement?
an integer expression
a Boolean expression
either A or B
Neither A or B
An EJB is a server-side component that encapsulates the business logic of an application
True
False
The setBackground() method is part of the class
Applet
Component
Container
Object
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
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
The length of a string object 's1' can be obtained using the expression s1.length.
True
False
The break statement is required in the default case of a switch selection structure.
True
False
A panel can not be added to another panel.
True
False
Which of the following are not keywords?
NULL
Implements
Protected
None of the above
Any method in a supper class can be over ridden in its subclass.
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
Session bean
Represents a single client inside the application server
Can not be shared
Is not persistent
Satisfies all of the above conditions
A final class may not have any abstract method.
True
False
In order to connect to a database through java program we must create _______-
Connection, Statement, ResultSet
Connection, ResultSet
Statement< ResultSet
Connection, Statement
With javadoc, which of the following denotes a javadoc comment?
//#
/*
/**
//**
Which javadoc tag is used to denote a comment for methods parameters?
@method
@parameter
@argument
@param
Any class may be inherited by another class in the same package.
True
False
Connection, Statement are interfaces and ResultSet is a class.
True.
False.
A method declared as static can not access non-static class members.
True
False