A catch can have comma-separated multiple arguments.
True
False
Correct Answer :
B. False
Related Questions
All methods in an abstract class must be declared abstract.
True
False
One the features of is that an array can store many different types of values.
True
False
The break statement is required in the default case of a switch selection structure.
True
False
Which of the following will produce a value of 10 if x = 9.7?
floor(x)
abs(x)
rint(x)
round(x)
Java is fully object oriented programme.
true
false
A class may be both abstract and final.
True
False
What is wrong in the following class definitions?
abstract class print {
abstract show();
}
class Display extends print {
}
abstract show();
}
class Display extends print {
}
Nothing is wrong
Wrong Method show() should have a return type
Wrong Methods show() is not implemented in Display
Wrong Display does not contain any members.
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
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");
executeUpdate(------------) returns ___________
Nothing
Returns a ResultSet object
Returns an integer value to show the no. of updated rows
None of the above.
Submit button always fires doPost(...)
True
False
The default case is always required in the switch selection structure.
True
False
Which of the following classes are available in the java.lang package?
Random
Stack
String Buffer
Vector
In order to connect to a database through java program we must create _______-
Connection, Statement, ResultSet
Connection, ResultSet
Statement< ResultSet
Connection, Statement
The modulus operator (%) can be used only with Integer operands.
True
False
A package is a collection of
classes
interface
editing tools
classes and interfaces
Which of the following methods can be used to draw the outline of a square?
fillRect()
drawLine()
drawString()
all of the above
In evaluating a logical expression of type 'Boolean expression 1&& Boolean expression 2', both the Boolean expressions are not always evaluated.
True
False
A variable declared inside the for loop control can not be referenced out side the loop.
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.
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 javadoc tag is used to denote a comment for methods parameters?
@method
@parameter
@argument
@param
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
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.
Java always provides a default constructor to a class.
True
False
Connection, Statement are interfaces and ResultSet is a class.
True.
False.
In the code below, what data types the variable x can have?
byte b1 = 5;
byte b2 = 10;
x = b1 * b2;
int short
Which of the following represent legal flow control statements?
break;
break();
continue(inner);
all of the above
What is error in the following class definitions?
abstract class xy {
abstract sum(int x, int y) {
}
}
abstract sum(int x, int y) {
}
}
class header is not define properly
constructor is no defined
method is not defined properly
no error