When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
Correct Answer :
B. False
Related Questions
The name of a Java program file must match the name of the class with the extension Java.
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
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
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.
Declarations can appear anywhere in the body of a Java method.
True
False
We can over load methods with differences only in their return type.
True
False
Which of the following statements are valid array declarations?
int number();
float average[];
double[] marks;
counter int[];
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
class.forName(...) creates an instance of java ODBC driver
True
False
The default case is always required in the switch selection structure.
True
False
Any method in a supper class can be over ridden in its subclass.
True
False
Java is fully object oriented programme.
true
false
A string object can not be modified after it is created.
True
False
The expression (x == y && a<b) is true If either x == y is true or a<b is true.
True
False
Which javadoc tag is used to denote a comment for methods parameters?
@method
@parameter
@argument
@param
Which of the following methods can be used to remove a component from the display?
remove()
desappear()
hide()
move()
A panel can not be added to another panel.
True
False
A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.
True
False
A catch can have comma-separated multiple arguments.
True
False
A class may be both abstract and final.
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
Every call to wait has a corresponding call to notify that will eventually end the wafting.
True
False
Which of the following statements are true?
An abstract class may not have any final methods?
A final class may not have any abstracts methods.
Transient variables must be static.
all of the above
Objects are passed to a method by use of call-by-reference.
True
False
Which exception is thrown by the read() method of InputStream class?
IOException
FileNotFoundException
ReadException
None of the above
It is perfectly legal to refer to any instance variable inside of a static method.
True
False
A Java monitor must either extend thread class or implement Runnable interface.
True
False
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
Servlet has ___________
init method
doGet(------) method
All of the above methods.
The break statement is required in the default case of a switch selection structure.
True
False