I don't understand how SwingTerminalFrame works

[ryuthegamerpup]

This works:

public class Legendsdb {
 
    public static void main(String[] args) throws IOException {
        DefaultTerminalFactory dtf = new DefaultTerminalFactory();
        Terminal terminal = dtf.createTerminal();
        terminal.putCharacter('H');
        terminal.putCharacter('e');
        terminal.putCharacter('l');
        terminal.putCharacter('l');
        terminal.putCharacter('o');
        terminal.flush();
    }
}

This doesn't work:

public class Legendsdb {
 
    public static void main(String[] args) throws IOException {
        DefaultTerminalFactory dtf = new DefaultTerminalFactory();
        SwingTerminalFrame terminal = dtf.createSwingTerminal();
        // also happens with Terminal terminal = dtf.createSwingTerminal();
        terminal.putCharacter('H');
        terminal.putCharacter('e');
        terminal.putCharacter('l');
        terminal.putCharacter('l');
        terminal.putCharacter('o');
        terminal.flush();
    }
}

Returns:
Exception in thread "main" java.lang.IllegalArgumentException: Width (0) and height (0) cannot be <= 0

[mabe02]

If createTerminal() chooses to create a Swing or AWT terminal, it will also make it visible immediately. I don't remember exactly why but I'm guessing before you show the window it has internal size 0x0, and calling createSwingTerminal() doesn't show it.

So, either set the terminal size manually after calling dtf.createSwingTerminal() or call terminal.setVisible(true)

Try that

[flizaga]

If createTerminal() chooses to create a Swing or AWT terminal, it will also make it visible immediately. I don't remember exactly why but I'm guessing before you show the window it has internal size 0x0, and calling createSwingTerminal() doesn't show it.

So, either set the terminal size manually after calling dtf.createSwingTerminal() or call terminal.setVisible(true)

Try that

Your assumption is right, the createTerminal methods calls createTerminalEmulator who will first call the createSwingTerminal, then call the makeWindowVisible private method who will basically call the swingterminal setVisible method (true by default)