The programmer must explicitly create the system .in and system .out objects.
True
False
Correct Answer :
B. False
Related Questions
It is perfectly legal to assign a subclass object to a supper class reference.
True
False
In a single Servlet class we can use____________
doGet(...) method only
doPost(...) method only
doGet(...) method and doPost(...) method both at a time.
Either 'a' or 'b'
An EJB is a server-side component that encapsulates the business logic of an application
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
We can over load methods with differences only in their return type.
True
False
Which javadoc tag is used to denote a comment for methods parameters?
@method
@parameter
@argument
@param
Which of the following represent legal flow control statements?
break();
continue(inner);
return;
exit();
Which of the following string can be used as mode string for creating a RandomAccessFile object?
"rw"
"wr"
"0"
'w''
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.
The use of protected keyword to a member in a class will restrict its visibility as follows:
Visibility only in the class and its subclasses in the same package.
Visibility only inside the same package.
Visibility in all classes in the same package and subclasses in other packages.
Visibility only in the class where it is declared.
Session bean
Represents a single client inside the application server
Can not be shared
Is not persistent
Satisfies all of the above conditions
A method declared as static can not access non-static class members.
True
False
Which exception is thrown by the read() method of InputStream class?
IOException
FileNotFoundException
ReadException
None of the above
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
The name of the RMI compiler is ___________
rmicom
rmic
jrmi
none 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.
Every method of a final in class is implicitly final.
True
False
To delete a file, we can use an instance of class file.
True
False
Which of the following are the wrapper classes?
Random
Vector
Byte
all of the above
The programmer must explicitly create the system .in and system .out objects.
True
False
A panel can not be added to another panel.
True
False
If you want to assign a value of 99 to the variable year, then which of the following lines can be used within an <applet> tags?
number=getParameter(99)
<number==99>
<param = radius value ==99>
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.
The keywords reserved but not used in the initial version of Java re:
Synchronized
Boolean
union
goto
Declarations can appear anywhere in the body of a Java method.
True
False
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
Which of the following methods belong to the String class?
length()
compareTo()
substring()
all of the them
A class may be both abstract and final.
True
False
The length of a string object 's1' can be obtained using the expression s1.length.
True
False