class

Console

@Js
const abstract class Console : Obj

Console provides utilities to interact with the terminal console. For Java this API is designed to use jline if installed. In browser JavaScript environments this APIs uses the JS debugging window.

 methods cur

Get the default console for the virtual machine

 debug

Print a message to the console at the debug level

 err

Print a message to the console at the error level

 clear

Clear the console of all text if supported

 promptPassword

Prompt the user to enter a password string from standard input with echo disabled

 warn

Print a message to the console at the warning level

 groupEnd

Exit an indented, collapsable group level

 width

Number of chars that fit horizontally in console or null if unknown

 prompt

Prompt the user to enter a string from standard input

 wrap

Construct a console that wraps an output stream

 table

Print tabular data to the console

 group

Enter an indented group level in the console

 height

Number of lines that fit vertically in console or null if unknown

 info

Print a message to the console at the informational level

 clear abstract This clear()

Clear the console of all text if supported

 cur static Console cur()

Get the default console for the virtual machine

 debug abstract This debug(Obj? msg, Err? err)

Print a message to the console at the debug level

 err abstract This err(Obj? msg, Err? err)

Print a message to the console at the error level

 group abstract This group(Obj? msg, Bool collapsed)

Enter an indented group level in the console. The JS debug window can specify the group to default in a collapsed state (this flag is ignored in a standard terminal).

 groupEnd abstract This groupEnd()

Exit an indented, collapsable group level

 height abstract Int? height()

Number of lines that fit vertically in console or null if unknown

 info abstract This info(Obj? msg, Err? err)

Print a message to the console at the informational level

 prompt abstract Str? prompt(Str msg)

Prompt the user to enter a string from standard input. Return null if end of stream has been reached.

 promptPassword abstract Str? promptPassword(Str msg)

Prompt the user to enter a password string from standard input with echo disabled. Return null if end of stream has been reached.

 table abstract This table(Obj? obj)

Print tabular data to the console:

  • List of list is two dimensional data where first row is header names
  • List of items with an each method will create column per key
  • List of items without each will map to a column of "val"
  • Anything else will be table of one cell table

 warn abstract This warn(Obj? msg, Err? err)

Print a message to the console at the warning level

 width abstract Int? width()

Number of chars that fit horizontally in console or null if unknown

 wrap static Console wrap(OutStream out)

Construct a console that wraps an output stream. The returned console instance is not thread safe.

 Haxall 4.0.5 ∙ 24-Feb-2026 14:33 EST