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
Correct Answer :
B. FileOutputStream fos=new FileOutputStream(file);
Related Questions
We can add more than one class(es) at the time of compilation Java Beans.
True.
False.
Servlet can have ___________
get method and post method
get method or post method
Either 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.
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
The break statement is required in the default case of a switch selection structure.
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
A static class method can be invoked by simply using the name of the method alone.
True
False
Which of the following string can be used as mode string for creating a RandomAccessFile object?
"rw"
"wr"
"0"
'w''
When X is a positive number the operations x>> 2 and x>>>2 both produce the same result.
True
False
Declarations can appear anywhere in the body of a Java method.
True
False
Which javadoc tag is used to denote a comment for methods parameters?
@method
@parameter
@argument
@param
The programmer must explicitly create the system .in and system .out objects.
True
False
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
It is perfectly legal to assign a subclass object to a supper class reference.
True
False
In evaluating a logical expression of type 'Boolean expression 1&& Boolean expression 2', both the Boolean expressions are not always evaluated.
True
False
One the features of is that an array can store many different types of values.
True
False
A catch can have comma-separated multiple arguments.
True
False
Which of the following statements are valid array declarations?
int number();
float average[];
double[] marks;
counter int[];
Members of a class specified as private are accessible only to the methods of the class.
True
False
The length of a string object 's1' can be obtained using the expression s1.length.
True
False
Java is fully object oriented programme.
true
false
Which of the following methods can be used to change the size of a
size() *
resize()
component
dimension()
setSize()
size()
We would like to make a member of a class visible in all subclasses regardless of what package they are in. Which one of the following keywords would achieve this?
private
protected
public
private protected
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.
Which of the following will produce a value of 22 if x=22.9:
Ceil(x)
Round(x)
Rint(x)
Abs(x)
Which of the following represent legal flow control statements?
break;
break();
continue(inner);
all of the above
A constructor must always invoke its supper class constructor in its first statement.
True
False
It is an error to catch the same type of exception in two different catch blocks associated with a particular try block.
True
False
For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
True.
False.