It is perfectly legal to refer to any instance variable inside of a static method.
True
False
Correct Answer :
B. False
Related Questions
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
executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
We can add more than one class(es) at the time of compilation Java Beans.
True.
False.
Which are the valid ways to create DataInputStream streams?
new DataInputStream(new File("in.dat"));
new DataInputStream(new FileInputStream("in.dat"));
new DataInputStream("in.dat");
new DataInputStream("in.data","r");
Which of the following represent legal flow control statements?
break;
break();
continue(inner);
all of the above
Which javadoc tag is used to denote a comment for methods parameters?
@method
@parameter
@argument
@param
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 will produce a value of 22 if x=22.9:
Ceil(x)
Round(x)
Rint(x)
Abs(x)
Which of the following methods can be used to change the size of a
size() *
resize()
component
dimension()
setSize()
size()
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
A method declared as static can not access non-static class members.
True
False
Objects are passed to a method by use of call-by-reference.
True
False
Which of the following are keywords?
integer
default
Boolean
Object
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
In the code below, what data types the variable x can have?
byte b1 = 5;
byte b2 = 10;
x = b1 * b2;
int short
The check box group class is a subclass of the component class.
True
False
The methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
The break statement is required in the default case of a switch selection structure.
True
False
The default case is always required in the switch selection structure.
True
False
A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.
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
Every method of a final in class is implicitly final.
True
False
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.
Submit button always fires doPost(...)
True
False
A variable declared inside the for loop control can not be referenced out side the loop.
True
False
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
It is an error if a class with one or more abstract methods is not explicitly declared abstract.
True
False
Members of a class specified as private are accessible only to the methods of the class.
True
False