A class may be both abstract and final.
True
False
Correct Answer :
B. False
Related Questions
A catch can have comma-separated multiple arguments.
True
False
A Java monitor must either extend thread class or implement Runnable interface.
True
False
A panel can not be added to another panel.
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
The name of the RMI compiler is ___________
rmicom
rmic
jrmi
none of the above
Which of the following classes are available in the java.lang package?
Random
Stack
String Buffer
Vector
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
Declarations can appear anywhere in the body of a Java method.
True
False
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.
The programmer must explicitly create the system .in and system .out objects.
True
False
Connection, Statement are interfaces and ResultSet is a class.
True.
False.
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
forName() is a static factory method
True
False
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
We can over load methods with differences only in their return type.
True
False
Which of the following command lines options generates documentation for all classes and methods?
-protected
-public
-private
-encoding
It is an error to catch the same type of exception in two different catch blocks associated with a particular try block.
True
False
Which of the following methods can be used to change the size of a
size() *
resize()
component
dimension()
setSize()
size()
All the bitwise operators have the same level of precedence in Java.
True
False
The methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
In evaluating a logical expression of type 'Boolean expression 1&& Boolean expression 2', both the Boolean expressions are not always evaluated.
True
False
Which exception is thrown by the read() method of InputStream class?
IOException
FileNotFoundException
ReadException
None of the above
Servlet has ___________
init method
doGet(------) method
All of the above methods.
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
Java is fully object oriented programme.
true
false
The keywords reserved but not used in the initial version of Java re:
Synchronized
Boolean
union
goto
Frames and applets cannot be used together in the same program.
True
False
executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.
Which of the following methods belong to the String class?
length()
compareTo()
substring()
all of the them
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