Every call to wait has a corresponding call to notify that will eventually end the wafting.
True
False
Correct Answer :
A. True
Related Questions
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
Connection, Statement are interfaces and ResultSet is a class.
True.
False.
We can add more than one class(es) at the time of compilation Java Beans.
True.
False.
JSP files creates ________________
html files
html files and java files
java files and class files
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.
A string object can not be modified after it is created.
True
False
The length of a string object 's1' can be obtained using the expression s1.length.
True
False
Which of the following methods can be used to remove a component from the display?
remove()
desappear()
hide()
move()
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
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
class.forName(...) creates an instance of java ODBC driver
True
False
A panel can not be added to another panel.
True
False
A catch can have comma-separated multiple arguments.
True
False
All the bitwise operators have the same level of precedence in Java.
True
False
Which of the following methods belong to the String class?
length()
compareTo()
substring()
all of the them
Java is fully object oriented programme.
true
false
The import statement is always the first no comment statement in a Java program files.
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");
Every method of a final in class is implicitly final.
True
False
In RMI we invoke client method from remote server
True
False
executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.
EJBs can be of the following type(s)
None of the above
Entity Bean
Session Bean
Message-driven bean
All of the above
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.
The setBackground() method is part of the class
Applet
Component
Container
Object
DriverManager.getConnection("jdbc:odbc:dsn_name") method does not depend on the class.forName(...) method.
True.
False.
Throwing an exception always causes program termination.
True
False
A JSP file can be stored_________________
With the extension .jsp in servlets folder of the jws
With the extension .html in public_html folder of the jws
With the extension .jsp in public_html folder of the jws
None of the above.
Consider the following code snippet:
try
{
int x=0; int y=50/x;
System.out.println("Division by zero");
}
catch(ArithmeticException e)
{
System.out.println("catch block");
}
What will be the output?
{
int x=0; int y=50/x;
System.out.println("Division by zero");
}
catch(ArithmeticException e)
{
System.out.println("catch block");
}
Error. Won't compile
Division by zero
Catch block
Division by zero catch block
Consider the following statements:
int x = 10, y = 15;
x = ((x < y) ? (y + x) : (y - x);
What will be the value of x after executing these statements?
x = ((x < y) ? (y + x) : (y - x);
25
15
5
Error can't be executed.
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.