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Is there any way to make my own System.out? I want to have a class "MyConsole" with an attribute out (PrintWriter) and send from all classes txt messages that will be printed in a JTextArea (like System.out print all messages in the console) without make a instance of it in all classes or pass it in the attributes

Sorin George Budescu
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  • Not as a static reference without doing some really bad design. – Sotirios Delimanolis Sep 20 '13 at 16:07
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    If you really have to, create your own `PrintWriter`, then use `System.setOut(myPrintWriter)`, so that every output to the console will be redirected to your printwriter. – BackSlash Sep 20 '13 at 16:07
  • i want to have multiple "System.out" to link more consoles – Sorin George Budescu Sep 20 '13 at 16:12
  • @SorinGeorgeBudescu Create as many `PrintWriter`s you need, set one as output stream with `System.setOut(myPrintWriter)` and use it to propagate the output to the others. – BackSlash Sep 20 '13 at 16:14
  • i need something like ex: Console1.out.println(message1) and the message 1 goes only in the JTextArea linked Console1, Console2.out.println(message2) and the message 2 goes only in the JTextArea linked Console2 – Sorin George Budescu Sep 20 '13 at 16:20

3 Answers3

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i need something like ex: Console1.out.println(message1) and the message 1 goes only in the JTextArea linked Console1, Console2.out.println(message2) and the message 2 goes only in the JTextArea linked Console2

Why don't you just make your own class that extends JTextArea and write a method to do what you want? Something like:

public class MyTextArea extends JTextArea {
    public void println() {
        //add text to the textarea
    }
}

If you don't need your method to have name println you can just use the append method, which already exists in the JTextArea:

textArea.append(myString+"\n");
BackSlash
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Create a static final class and static methods and use it through out the application. Static method can be directly called without instantiating the class.

Abhijith Nagarajan
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I use this open source Message Console in java. It's simple to use.

message console Java

Community
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