What is System, out, println in System.out.println() in Java
java, system.out
Solution
The first answer you posted (System is a built-in class...) is pretty spot on.
You can add that the `System` class contains large portions which are native and that is set up by the JVM during startup, like connecting the `System.out` printstream to the native output stream associated with the "standard out" (console).
Problem
Possible Duplicate: What's the meaning of System.out.println in Java? I was looking for the answer of what `System`, `out` and `println` are in `System.out.println()` in the Java. I searched and found a different answer like these: 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) In another page i find another contrasting definition as System.out.print is a standard output function used in java. where System specifies the package name, out specifies the class name and print is a function in that class. I am confused by these. Could anybody please exactly tell me what they are?