The writer() method of Console class in Java is used to retrieves the unique PrintWriter object which is associated with the console.
Syntax:
public PrintWriter writer()
Parameters: This method does not accept any parameter.
Return value: This method returns the PrintWriter which is associated with the console.
Exceptions: This method does not any throw exception.
Note: System.console() returns null in an online IDE.
Below programs illustrate writer() method in Console class in IO package:
Program 1:
// Java program to illustrate// Console writer() method  import java.io.*;  public class GFG {    public static void main(String[] args)    {        // Create the console object        Console cnsl            = System.console();          if (cnsl == null) {            System.out.println(                "No console available");            return;        }          // Create PrintWriter        PrintWriter pw = cnsl.writer();          System.out.println(            "PrintWriter is created and returned");    }} |

Program 2:
// Java program to illustrate// Console writer() method  import java.io.*;  public class GFG {    public static void main(String[] args)    {        // Create the console object        Console cnsl            = System.console();          if (cnsl == null) {            System.out.println(                "No console available");            return;        }          // Create PrintWriter        PrintWriter pw = cnsl.writer();          System.out.println(            "PrintWriter is created and returned");    }} |

References:
https://docs.oracle.com/javase/10/docs/api/java/io/Console.html#writer()
