A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.
True
False
Correct Answer :
A. True
Related Questions
The break statement is required in the default case of a switch selection structure.
True
False
executeUpdate automatically updates data because___________
auto commit is on, by default
It performs a hidden commit statement as well
Does not commit
None of the above.
Submit button always fires doPost(...)
True
False
Session bean
Represents a single client inside the application server
Can not be shared
Is not persistent
Satisfies all of the above conditions
We can over load methods with differences only in their return type.
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
When X is a positive number the operations x>> 2 and x>>>2 both produce the same result.
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");
It is perfectly legal to assign a subclass object to a supper class reference.
True
False
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
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
Which of the following represent legal flow control statements?
break();
continue(inner);
return;
exit();
The methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
Any method in a supper class can be over ridden in its subclass.
True
False
Which of the following keywords are used to control access to a class member?
default
protected
interface
None of the above
Connection, Statement are interfaces and ResultSet is a class.
True.
False.
When present, package must be the first no comment statement in the file.
True
False
What does the following line of code do?
TextField text=new TextField(10);
Creates text object that can hold 10 rows of text.
Creates text object that can hold 10 columns of text.
Creates the object text and initializes it with the value 10.
The code is illegal.
Frames and applets cannot be used together in the same program.
True
False
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
The keywords reserved but not used in the initial version of Java re:
Synchronized
Boolean
union
goto
Servlet has ___________
init method
doGet(------) method
All of the above methods.
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
Which of the following string can be used as mode string for creating a RandomAccessFile object?
"rw"
"wr"
"0"
'w''
The setBackground() method is part of the class
Applet
Component
Container
Object
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
It is an error if a class with one or more abstract methods is not explicitly declared abstract.
True
False
forName() is a static factory method
True
False
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.