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Java

Posted by Jerime McCastle
Jerime McCastle
1,274 Points

console question

import java.io.Console;
  public class TreeStory {
    public static void main (String [] args) {
        Console console = System.console();

        int age = 29;
        String old = console.readLine("How old are you?  ");

        if (age < 19)
        {
          System.out.println("You are not an adult");
        }
        else
        {
          console.printf ("You are an adult\n");
        }
        }
}

System.out.println and console.printf can be used interchangeably. I would like to know when these should be used.

1 Answer

William Li
PLUS
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

Speaking from my experience, yeah, System.out.println and console.printf can be used interchangeably as long as you're in a console environment.

But when you're using an IDE, Eclipse for example, System.console() can give you a NullPointerException because you aren't running the Java code in a console.