System.out.println() in Java

System.out.println() in Java

In java language print() and println() are the predefined non-static method of printStream class used to display value or message either in the same line or line by line respectively. PrintStream class is having fixed object reference in the System class (existing as a static properties) so that either print() or println() method can be called with following syntax..

	System.out.print("--------------");
	System.out.println("------------");

/* "out" is Object reference of printStream class
 existing in system class as a static property. */

class  PrintStream
{
println()	//-----------> non-static
{
........
}
print()	 //-----------> non-static
{
........
........
}
}

class  System
{
Static  PrintStream  out;
Static  PrintStream  err;
}

Examples of SOP Statements

System.out.println("Hello");    // ---------> Hello
int  x=10, y=20;
System.out.println("x");	  // ---------> x
System.out.println(x);	// ---------> 10
System.out.println("Hello"+x);	// --------->  Hello10
System.out.println(x+y);		// --------->  30
System.out.println(x+y+"Hello");	// ---------> 1020Hello

class Hello
{
public static void main(String arg[])
{
System.out.println("Hello word");
}
}

Hello Word