executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.
Correct Answer :
C. Returns an integer value to show the no. of updated rows
Related Questions
A panel can not be added to another panel.
True
False
It is an error to have a method with the same signature in both the super class and its subclass.
True
False
When we implement an interface method, it should be declared as public.
True
False
executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.
Servlet can have ___________
get method and post method
get method or post method
Either of the above
A Java monitor must either extend thread class or implement Runnable interface.
True
False
Which of the following represent legal flow control statements?
break();
continue(inner);
return;
exit();
Consider the following class definitions:
class maths {
student student1;
}
class student {
String name;
}
student student1;
}
class student {
String name;
}
This code represents:
an 'is a' relationship
a 'has a' relationship
both
neither
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
Which of the following methods can be used to draw the outline of a square?
fillRect()
drawLine()
drawString()
all of the above
Objects are passed to a method by use of call-by-reference.
True
False
Java always provides a default constructor to a class.
True
False
When we implement the Runnable interface, we must define the method
start()
init()
runnable()
run()
JdbcOdbcDriver is an object of Object class
True
False
Which of the following represent legal flow control statements?
break;
break();
continue(inner);
all of the above
The name of a Java program file must match the name of the class with the extension Java.
True
False
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 are keywords?
integer
default
Boolean
Object
The check box group class is a subclass of the component class.
True
False
Declarations can appear anywhere in the body of a Java method.
True
False
JSP files creates ________________
html files
html files and java files
java files and class files
None of the above.
Which of the following are the wrapper classes?
Random
Vector
Byte
all 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.
Which of the following command lines options generates documentation for all classes and methods?
-protected
-public
-private
-encoding
A catch can have comma-separated multiple arguments.
True
False
Which of the following classes are available in the java.lang package?
Random
Stack
String Buffer
Vector
Throwing an exception always causes program termination.
True
False
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
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
Which of the following methods belong to the String class?
length()
compareTo()
substring()
all of the them