System.setOut(PrintStream out) has the following syntax.
public static void setOut(PrintStream out)
In the following code shows how to use System.setOut(PrintStream out) method.
// w w w.j ava2 s .c om import java.io.FileOutputStream; import java.io.PrintStream; public class Main { public static void main(String[] args) throws Exception{ FileOutputStream f = new FileOutputStream("file.txt"); System.setOut(new PrintStream(f)); System.out.println("This is from java2s.com"); } }