explain System.out.println
Answer Posted / sumit lole
System.out.println()
System is a built-in class present in java.lang package.
This class has a final modifier, which means that, it cannot be inherited by other classes.
It contains pre-defined methods and fields, which provides facilities like standard input, output, etc.
out is a static final field (ie, variable)in System class which is of the type PrintStream (a built-in class, contains methods to print the different data values).
static fields and methods must be accessed by using the class name, so ( System.out ).
out here denotes the reference variable of the type PrintStream class.
println() is a public method in PrintStream class to print the data values.
Hence to access a method in PrintStream class, we use out.println() (as non static methods and fields can only be accessed by using the refrence varialble)
System.out.println();
eg:
int i = 3;
System.out.println(i);
the above code prints the value of 3 in the screen and brings the control to the next line.
Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
What is the difference between the paint() and repaint() methods?
Why are pointers not secure?
What are the two types of streams offered by java 8?
If we don’t want some of the fields not to serialize how to do that?
What is the difference between a checked and an unchecked exception?
Where local and global variables are stored?
Can you have two constructors in java?
What is concurrent hashmap and its features?
Class c implements interface I containing method m1 and m2 declarations. Class c has provided implementation for method m2. Can I create an object of class c?
What is file in java?
What is the difference between the prefix and postfix forms of the ++ operator?
What do you understand by java?
Why are arrays useful in java?
1.IN CASE OF DYNAMIC METHOD DISPATCH WHY WE USE REFERENCE VARIABLE,WE CAN USE THE DIFFERENT DEFINED OBJECT DIRECTLY TO ACCESS THE DATA MEMBER AND MEMBER FUNCTION OF THAT RESPECTIVE CLASS?WHAT IS THE MAIN FUNCTION OF "REFERENCE VARIABLE" HERE?
What is methodological theory?