We can over load methods with differences only in their return type.
True
False
Correct Answer :
B. False
Related Questions
Which of the following methods can be used to remove a component from the display?
remove()
desappear()
hide()
move()
class.forName(...) creates an instance of java ODBC driver
True
False
The default case is always required in the switch selection structure.
True
False
One the features of is that an array can store many different types of values.
True
False
Submit button always fires doPost(...)
True
False
Any method in a supper class can be over ridden in its subclass.
True
False
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
To delete a file, we can use an instance of class file.
True
False
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
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.
DriverManager.getConnection("jdbc:odbc:dsn_name") method does not depend on the class.forName(...) method.
True.
False.
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
Throwing an exception always causes program termination.
True
False
A variable declared inside the for loop control can not be referenced out side the loop.
True
False
A catch can have comma-separated multiple arguments.
True
False
In RMI before running the client program we must start RMI Registry.
True.
False.
Which of the following statements are true?
UTF characters are all 24 bits.
Reader class has methods that can read integers and floats.
Unicode characters are all 16 bits.
all of the above
If you want to assign a value of 99 to the variable year, then which of the following lines can be used within an <applet> tags?
number=getParameter(99)
<number==99>
<param = radius value ==99>
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.
Java always provides a default constructor to a class.
True
False
Which of the following classes are available in the java.lang package?
Random
Stack
String Buffer
Vector
A Java monitor must either extend thread class or implement Runnable interface.
True
False
The expression (x == y && a<b) is true If either x == y is true or a<b is true.
True
False
Which of the following statements are valid array declarations?
int number();
float average[];
double[] marks;
counter int[];
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.
Give file is a file object, which of the following are legal statements to create a new file.
file.create();
FileOutputStream fos=new FileOutputStream(file);
FileInputStream fis=new FileInputStream(file);
all 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
All the bitwise operators have the same level of precedence in Java.
True
False
In RMI we invoke client method from remote server
True
False