CODEWITHSUNDEEP
javajava-9jshell
B. S. Rawat
B. S. Rawat

Reputation: 1914

How to clear Java 9 JShell Console?

I didn't find any command to clear Java-9 JShell console. I also tried to clear the JShell Console through this program, but it doesn't work either.

import java.io.IOException;

class CLS {
    public static void main(String... arg) throws IOException, InterruptedException {
        new ProcessBuilder("cmd", "/c", "cls").inheritIO().start().waitFor();
    }
}

I think we don't have that functionality available yet in the early access. Anyone got an idea?

Upvotes: 22

Views: 7513

Answers (7)

Devendra Singraul
Devendra Singraul

Reputation: 951

Use CTRL+L to clear Jshell screen in Windows 11 OS.

Upvotes: 0

lupchiazoem
lupchiazoem

Reputation: 8086

OPTION A:

Create a method: void cls() { for( int i=0; i < 50; i++ ) { System.out.println(); } } and call it.

OPTION B:

To retain it for future sessions also, append the method to a startup script as follows:

  1. Create and save a file with following(retain any of yours):

/open DEFAULT void cls() { for( int i=0; i < 50; i++ ) { System.out.println(); } }

  1. Run the script: /set start -retain <PATH+FILE_NAME[+EXT]>
  2. Run command(save your work before using this command): /reset
  3. Call the method.

NOTE: Call cls() , not just cls.

EDIT: Edit the number 50 as per your screen.

Upvotes: 0

Soner from The Ottoman Empire
Soner from The Ottoman Empire

Reputation: 20901

Use the Control Key+L or l (lower case L) to clear the JShell console.

Upvotes: 17

i.karayel
i.karayel

Reputation: 4875

There is an issue about this Bug jshell tool: Clear screen command

for now, first exit jshell by

 /exit

then 

 cls

if you want to reset use 

 /reset

Upvotes: 2

Shant Dashjian
Shant Dashjian

Reputation: 1010

In macOS terminal, you could use the CMD+K shortcut to clear the JShell console.

Upvotes: 3

B. S. Rawat
B. S. Rawat

Reputation: 1914

  • I have added clear console command in JShell. You can download it from Try artifact

-> /cls

  • It also supports maven in JShell.

Upvotes: 0

Maroun
Maroun

Reputation: 95968

You can use the following command (reference):

System.out.print("\033[H\033[2J");

Example:

-> System.out.println("Hello, JShell!")
Hello, JShell!

-> System.out.println("How are you?")
How are you?

-> System.out.print("\033[H\033[2J");

Now you'll have a clear console.

Upvotes: 7

Related Questions