Output in a table format in Java s System out

Question

I m getting results from a database and want to output the data as a table in Java s standard output  I ve tried using  t but the first column I want is very variable in length   Is there a way to display this in a nice table like output

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public class Main    public static void main String args         String format      1 -10s  2 -10s  3 -20s  n      System out format format   A    AA    AAA       System out format format   B        BBBBB       System out format format   C    CCCCC    CCCCCCCC        String ex        E    EEEEEEEEEE    E         System out format String format format   Object    ex           differece in sizes of input doesnt effect the output

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Using j-text-utils you may print to console a table like    And it as simple as   TextTable tt   new TextTable columnNames  data                                                            tt printTable         The API also allows sorting and row numbering

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Check this out  The author provides a simple but elegant solution which doesn t require any 3rd party library  http   www ksmpartners com 2013 08 nicely-formatted-tabular-output-in-java

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I ve created a project that can build much advanced table views  If you supposed to print the table  the width of the table going to have a limit  I have applied it in one of my own project to get a customer invoice print   Following is an example of the print view              PLATINUM COMPUTERS PVT  LTD                NO 20 B  Main Street  Kandy  Sri Lanka        Land  812254630 Mob  712205220 Fax  812254639                   CUSTOMER INVOICE                   ----------------------- ----------------------   INFO                    CUSTOMER                 ----------------------- ----------------------   DATE  2015-9-8          ModernTec Distributors   TIME  10 53 AM          MOB   94719530398        BILL NO  12             ADDRES  No 25  Main St   INVOICE NO  458-80-108  reet  Kandy              ----------------------- ----------------------                   SELLING DETAILS                  ----------------- --------- ----- ------------   ITEM               PRICE      QTY        VALUE   ----------------- --------- ----- ------------   Optical mouse        120 00    20      2400 00   Gaming keyboard      550 00    30     16500 00   320GB SATA HDD       220 00    32      7040 00   500GB SATA HDD       274 00    13      3562 00   1TB SATA HDD         437 00    11      4807 00   RE-DVD ROM           144 00    29      4176 00   DDR3 4GB RAM         143 00    13      1859 00   Blu-ray DVD           94 00    28      2632 00   WR-DVD               122 00    34      4148 00   Adapter              543 00    28     15204 00   ----------------- --------- ----- ------------                  RETURNING DETAILS                 ----------------- --------- ----- ------------   ITEM               PRICE      QTY        VALUE   ----------------- --------- ----- ------------   320GB SATA HDD       220 00     4       880 00   WR-DVD               122 00     7       854 00   1TB SATA HDD         437 00     7      3059 00   RE-DVD ROM           144 00     4       576 00   Gaming keyboard      550 00     6      3300 00   DDR3 4GB RAM         143 00     7      1001 00   ----------------- --------- ----- ------------                                GROSS   59 928 00                         DISCOUNT 5      2 996 40                               RETURN    9 670 00                              PAYABLE   47 261 60                                 CASH   20 000 00                               CHEQUE   15 000 00                      CREDIT BALANCE    12 261 60          ---------------------   ---------------------       CASH COLLECTOR         GOODS RECEIVED BY                  soulution by clough com               This is the code for above print view and you can find the library  Wagu  in here

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Use System out format   You can set lengths of fields like this   System out format   32s 10d 16s   string1  int1  string2     This pads string1  int1  and string2 to 32  10  and 16 characters  respectively   See the Javadocs for java util Formatter for more information on the syntax  System out format uses a Formatter internally

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I may be very late for the Answer but here a simple and generic solution  import java util ArrayList  import java util HashMap  import java util List  import java util Map  import java util UUID   public class TableGenerator        private int PADDING SIZE   2      private String NEW LINE     n       private String TABLE JOINT SYMBOL            private String TABLE V SPLIT SYMBOL            private String TABLE H SPLIT SYMBOL    -        public String generateTable List lt String gt  headersList  List lt List lt String gt  gt  rowsList int    overRiddenHeaderHeight                StringBuilder stringBuilder   new StringBuilder             int rowHeight   overRiddenHeaderHeight length  gt  0   overRiddenHeaderHeight 0    1            Map lt Integer Integer gt  columnMaxWidthMapping   getMaximumWidhtofTable headersList  rowsList            stringBuilder append NEW LINE           stringBuilder append NEW LINE           createRowLine stringBuilder  headersList size    columnMaxWidthMapping           stringBuilder append NEW LINE             for  int headerIndex   0  headerIndex  lt  headersList size    headerIndex                  fillCell stringBuilder  headersList get headerIndex   headerIndex  columnMaxWidthMapping                      stringBuilder append NEW LINE            createRowLine stringBuilder  headersList size    columnMaxWidthMapping             for  List lt String gt  row   rowsList                 for  int i   0  i  lt  rowHeight  i                      stringBuilder append NEW LINE                              for  int cellIndex   0  cellIndex  lt  row size    cellIndex                      fillCell stringBuilder  row get cellIndex   cellIndex  columnMaxWidthMapping                                     stringBuilder append NEW LINE           createRowLine stringBuilder  headersList size    columnMaxWidthMapping           stringBuilder append NEW LINE           stringBuilder append NEW LINE            return stringBuilder toString               private void fillSpace StringBuilder stringBuilder  int length                for  int i   0  i  lt  length  i                  stringBuilder append                            private void createRowLine StringBuilder stringBuilder int headersListSize  Map lt Integer Integer gt  columnMaxWidthMapping                for  int i   0  i  lt  headersListSize  i                  if i    0                                stringBuilder append TABLE JOINT SYMBOL                                 for  int j   0  j  lt  columnMaxWidthMapping get i    PADDING SIZE   2   j                      stringBuilder append TABLE H SPLIT SYMBOL                             stringBuilder append TABLE JOINT SYMBOL                         private Map lt Integer Integer gt  getMaximumWidhtofTable List lt String gt  headersList  List lt List lt String gt  gt  rowsList                Map lt Integer Integer gt  columnMaxWidthMapping   new HashMap lt  gt              for  int columnIndex   0  columnIndex  lt  headersList size    columnIndex                  columnMaxWidthMapping put columnIndex  0                      for  int columnIndex   0  columnIndex  lt  headersList size    columnIndex                   if headersList get columnIndex  length    gt  columnMaxWidthMapping get columnIndex                                 columnMaxWidthMapping put columnIndex  headersList get columnIndex  length                                       for  List lt String gt  row   rowsList                 for  int columnIndex   0  columnIndex  lt  row size    columnIndex                       if row get columnIndex  length    gt  columnMaxWidthMapping get columnIndex                                         columnMaxWidthMapping put columnIndex  row get columnIndex  length                                                        for  int columnIndex   0  columnIndex  lt  headersList size    columnIndex                   if columnMaxWidthMapping get columnIndex    2    0                                columnMaxWidthMapping put columnIndex  columnMaxWidthMapping get columnIndex    1                                     return columnMaxWidthMapping             private int getOptimumCellPadding int cellIndex int datalength Map lt Integer Integer gt  columnMaxWidthMapping int cellPaddingSize                if datalength   2    0                        datalength                       if datalength  lt  columnMaxWidthMapping get cellIndex                         cellPaddingSize   cellPaddingSize    columnMaxWidthMapping get cellIndex  - datalength    2                     return cellPaddingSize             private void fillCell StringBuilder stringBuilder String cell int cellIndex Map lt Integer Integer gt  columnMaxWidthMapping                 int cellPaddingSize   getOptimumCellPadding cellIndex  cell length    columnMaxWidthMapping  PADDING SIZE            if cellIndex    0                        stringBuilder append TABLE V SPLIT SYMBOL                       fillSpace stringBuilder  cellPaddingSize           stringBuilder append cell           if cell length     2    0                        stringBuilder append                          fillSpace stringBuilder  cellPaddingSize            stringBuilder append TABLE V SPLIT SYMBOL                public static void main String   args            TableGenerator tableGenerator   new TableGenerator             List lt String gt  headersList   new ArrayList lt  gt              headersList add  Id            headersList add  F-Name            headersList add  L-Name            headersList add  Email             List lt List lt String gt  gt  rowsList   new ArrayList lt  gt              for  int i   0  i  lt  5  i                  List lt String gt  row   new ArrayList lt  gt                  row add UUID randomUUID   toString                 row add UUID randomUUID   toString                 row add UUID randomUUID   toString                 row add UUID randomUUID   toString                  rowsList add row                      System out println tableGenerator generateTable headersList  rowsList              With this kind of Output   ---------------------------------------- ---------------------------------------- ---------------------------------------- ----------------------------------------                      Id                                    F-Name                                    L-Name                                    Email                    ---------------------------------------- ---------------------------------------- ---------------------------------------- ----------------------------------------     70a56f25-d42a-499c-83ac-50188c45a0ac     aa04285e-c135-46e2-9f90-988bf7796cd0     ac495ba7-d3c7-463c-8c24-9ffde67324bc     f6b5851b-41e0-4a4e-a237-74f8e0bff9ab       6de181ca-919a-4425-a753-78d2de1038ef     c4ba5771-ccee-416e-aebd-ef94b07f4fa2     365980cb-e23a-4513-a895-77658f130135     69e01da1-078e-4934-afb0-5afd6ee166ac       f3285f33-5083-4881-a8b4-c8ae10372a6c     46df25ed-fa0f-42a4-9181-a0528bc593f6     d24016bf-a03f-424d-9a8f-9a7b7388fd85     4b976794-aac1-441e-8bd2-78f5ccbbd653       ab799acb-a582-45e7-ba2f-806948967e6c     d019438d-0a75-48bc-977b-9560de4e033e     8cb2ad11-978b-4a67-a87e-439d0a21ef99     2f2d9a39-9d95-4a5a-993f-ceedd5ff9953       78a68c0a-a824-42e8-b8a8-3bdd8a89e773     0f030c1b-2069-4c1a-bf7d-f23d1e291d2a     7f647cb4-a22e-46d2-8c96-0c09981773b1     0bc944ef-c1a7-4dd1-9eef-915712035a74     ---------------------------------------- ---------------------------------------- ---------------------------------------- ----------------------------------------

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Check out the class java util Formatter

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Because most of solutions is bit outdated I could also suggest asciitable which already available in maven  de vandermeer asciitable 0 3 2  and may produce very complicated configurations   Features  by offsite     Text table with some flexibility for rules and content  alignment  format  padding  margins  and frames  add text  as often as required in many different formats  string  text provider  render provider  ST  clusters   removes all excessive white spaces  tabulators  extra blanks  combinations of carriage return and line feed   6 different text alignments  left  right  centered  justified  justified last line left  justified last line right  flexible width  set for text and calculated in many different ways for rendering padding characters for left and right padding  configurable separately  padding characters for top and bottom padding  configurable separately  several options for drawing grids rules with different styles  as supported by the used grid theme  normal  light  strong  heavy  top bottom left right margins outside a frame character conversion to generated text suitable for further process  e g  for LaTeX and HTML   And usage still looks easy   AsciiTable at   new AsciiTable     at addRule    at addRow  row 1 col 1    row 1 col 2    at addRule    at addRow  row 2 col 1    row 2 col 2    at addRule     System out println at render        Finally  print the table to standard out

[java] Output in a table format in Java's System.out

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