How can I print to the same line

Question

I want to print a progress bar like so                           1                          10                          50    But these should all be printed to the same line in the terminal instead of a new one  What I mean by that is that each new line should replace the previous  it s not about using print   instead of println     How can I do that in Java

User · Answer

You could print the backspace character   b  as many times as necessary to delete the line before printing the updated progress bar

User · Answer

In kotlin print    The print statement prints everything inside it onto the screen  The print statements internally call System out print  println    The println statement appends a newline at the end of the output

User · Answer

In Linux  there is different escape sequences for control terminal   For example  there is special escape sequence for erase whole line   33 2K and for move cursor to previous line   33 1A   So all you need is to print this every time you need to refresh the line   Here is the code which prints Line 1  second variant    System out println  Line 1  first variant     System out print   33 1A 33 2K    System out println  Line 1  second variant       There are codes for cursor navigation  clearing screen and so on   I think there are some libraries which helps with it  ncurses

User · Answer

package org surthi tutorial concurrency   public class IncrementalPrintingSystem       public static void main String   args            new Thread   - gt               int i   0             while i    lt  100                   System out print                      int j 0                 while j   lt i                     System out print                                       while j   lt 100                     System out print                                       System out print         i                      try                     Thread sleep 1000l                    catch  InterruptedException e                      e printStackTrace                                    System out print   r                            start

User · Answer

Format your string like so                           1  r   Note the  r character  It is the so-called carriage return that will move the cursor back to the beginning of the line   Finally  make sure you use   System out print     and not   System out println

User · Answer

One could simply use  r to keep everything in the same line while erasing what was previously on that line

User · Answer

You can just do   System out print  String      Instead   System out println  String

User · Answer

First  I d like to apologize for bringing this question back up  but I felt that it could use another answer     Derek Schultz is kind of correct   The   b  character moves the printing cursor one character backwards  allowing you to overwrite the character that was printed there  it does not delete the entire line or even the character that was there unless you print new information on top    The following is an example of a progress bar using Java though it does not follow your format  it shows how to solve the core problem of overwriting characters  this has only been tested in Ubuntu 12 04 with Oracle s Java 7 on a 32-bit machine  but it should work on all Java systems    public class BackSpaceCharacterTest          the exception comes from the use of accessing the main thread     public static void main String   args  throws InterruptedException                              Notice the user of print as opposed to println              the   b  char cannot go over the new line char                     System out print  Start                        System out flush       the flush method prints it to the screen             11   b  chars  1 for the      the rest are for the spaces         System out print   b b b b b b b b b b b            System out flush            Thread sleep 500      just to make it easy to see the changes          for int i   0  i  lt  10  i                          System out print         overwrites a space             System out flush                Thread sleep 100                      System out print    Done n      overwrites the       adds chars         System out flush

[java] How can I print to the same line?

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