How can I get input using the System.console() method in Java?

You want to receive input from the user using the Console class. However, calling the System.console() method returns a null object. Should I change something before I use System.console()?

Console co=System.console();
System.out.println(co);
try{
    String s=co.readLine();
}

java

2022-09-21 21:34

1 Answers

To receive user input from the console rather than from the IDE, you can use the Console as follows.

System.out.print("Enter something:");
String input = System.console().readLine();

If you're thinking about another way to work anywhere:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Test {
    public static void main(String[] args) throws IOException { 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.print("Enter String");
        String s = br.readLine();
        System.out.print("Enter Integer:");
        try{
            int i = Integer.parseInt(br.readLine());
        }catch(NumberFormatException nfe){
            System.err.println("Invalid Format!");
        }
    }
}

System.console() returns null when input from IDE.

If you still really want to use System.console(), read How to.

2022-09-21 21:34

If you have any answers or tips

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