Java is fully object oriented programme.
true
false
Correct Answer :
A. true
Related Questions
Given the code
String s = new String("abc");
Which of the following calls are valid?
s.toUpperCase()
s.append("xyz")
s.setCharAt(1<'A')
all of the above
Which key word can protect a class in package from accessibility by the classes outside the package?
private
protected
final
don't use any keyword at all(make it default)
If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
True
False
Declarations can appear anywhere in the body of a Java method.
True
False
We can over load methods with differences only in their return type.
True
False
The length of a string object 's1' can be obtained using the expression s1.length.
True
False
Which of the following are keywords?
integer
default
Boolean
Object
Message-Driven beans act as a listener for the Java Message Service API, processing messages synchronously
True
False
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 concept of multiple inheritance is implemented in Java by
extending two or more classes
extending one class and implementing one or more interfaces
all the above
It is perfectly legal to refer to any instance variable inside of a static method.
True
False
It is an error if a class with one or more abstract methods is not explicitly declared abstract.
True
False
To delete a file, we can use an instance of class file.
True
False
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.
A panel can not be added to another panel.
True
False
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
Which of the following statements are valid array declarations?
int number();
float average[];
double[] marks;
counter int[];
A catch can have comma-separated multiple arguments.
True
False
A method declared as static can not access non-static class members.
True
False
The name of the RMI compiler is ___________
rmicom
rmic
jrmi
none of the above
Every method of a final in class is implicitly final.
True
False
In RMI we invoke client method from remote server
True
False
Objects are passed to a method by use of call-by-reference.
True
False
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.
With javadoc, which of the following denotes a javadoc comment?
//#
/*
/**
//**
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
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 class definition.
Class Student extends String
{
}
What happens when we try to compile this class?
Will not compile because class body is not defined
Will not compile because class is not declared public
Will compile successfully.
Will not compile because String is abstract
Which of the following string can be used as mode string for creating a RandomAccessFile object?
"rw"
"wr"
"0"
'w''