explain System.out.println
Answer Posted / saurabh pal
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 ? | 1 Yes | 0 No |
Post New Answer View All Answers
How does a cookie work in Servlets?
What about main thread in java?
What is local variable and instance variable?
Can an object be null?
Explain the difference between throw and throws in java?
Is java a prime method?
Is java a security risk?
What is the difference between the direct buffer and non-direct buffer in java?
Why parsing is done?
What are autoboxing and unboxing? When does it occur?
What does the exclamation mark mean in java?
What is the file extension for java?
Why we override equals() method?
What are data types in oop?
do I need to use synchronized on setvalue(int)? : Java thread