How to Clear Console in Java

Question

I have been pulling my hair for this since quite long time  I have researched for an hour on how to clear a console in Java   All I found was dirty hacking either by printing a bunch of lines or executing this   Runtime getruntime exec  cls clear      However  nothing seems to be working for me  Isn t there really any a way of clearing the console in Java like in C  clrscr      Isn t there any external library by which this can be achieved    Please let me know if anyone has ever done this before using a proper function  library etc  instead of dirty hacking

User · Answer

You can easily implement clrscr   using simple for loop printing   b

User · Answer

Runtime getRuntime   exec  PlatformDepedentCode      You need to replace  PlatformDependentCode  with your platform s clear console command   The exec   method executes the command you entered as the argument  just as if it is entered in the console   In Windows you would write it as Runtime getRuntime   exec  cls

User · Answer

If your terminal supports ANSI escape codes  this clears the screen and moves the cursor to the first row  first column   System out print   033 H 033 2J    System out flush      This works on almost all UNIX terminals and terminal emulators  The Windows cmd exe does not interprete ANSI escape codes

User · Answer

Use the following code     System out println   f          f  is an escape sequence which represents FormFeed  This is what I have used in my projects to clear the console  This is simpler than the other codes  I guess

User · Answer

If you are using windows and are interested in clearing the screen before running the program  you can compile the file call it from a  bat file  for example     cls  java  what ever the name of the compiles class is     Save as  etc  bat and then running by calling it in the command prompt or double clicking the file

User · Answer

You need to instruct the console to clear   For serial terminals this was typically done through so called  escape sequences   where notably the vt100 set has become very commonly supported  and its close ANSI-cousin    Windows has traditionally not supported such sequences  out-of-the-box  but relied on API-calls to do these things   For DOS-based versions of Windows  however  the ANSI SYS driver could be installed to provide such support   So if you are under Windows  you need to interact with the appropriate Windows API   I do not believe the standard Java runtime library contains code to do so

User · Answer

Try this code   import java io IOException   public class CLS       public static void main String    arg  throws IOException  InterruptedException           new ProcessBuilder  cmd     c    cls   inheritIO   start   waitFor              Now when the Java process is connected to a console  it will clear the console

[java] How to Clear Console in Java?

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