convert arraylist to html table

java html servlets arraylist

12,689

Replace

    for (int i = 0; i < ex.getExpenses().size(); i++) {
        out.println("<td>" + ex.getExpenses().get(i) + "</td>");
        if (i>0 && i%4==0) {
            out.println("</tr><tr>");
        }
    }

with

    for (int i = 0; i < ex.getExpenses().size(); i++) {
        if (i>0 && i%4==0) {
            out.println("</tr><tr>");
        }
        out.println("<td>" + ex.getExpenses().get(i) + "</td>");
    }

By the way. Create separate class Expenses that contains 4 fields. It will be much cleaner and easier to convert this to html. You can write special separate method for converting Expenses to html table row.

12,689

Gipsy

Updated on June 04, 2022

Comments

Gipsy almost 2 years

how do i retrieve my arraylist into html table?

my arraylist:

[
1, 2011-05-10,  1,  22.0, 
2, 2011-05-10,  2,  5555.0, 
3, 2011-05-11,  3,  123.0, 
4, 2011-05-11,  2, 212.0, 
5, 2011-05-30,  1,  3000.0, 
6, 2011-05-30,  1,  30.0, 
7, 2011-06-06,  1,  307.0, 
8, 2011-06-06,  1,  307.0 ]

out.println("<html>");
        out.println("<head>");
        out.println("<title>Counter</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("<table border=\"1\">");
        out.println("<tr>");
        for (int i = 0; i < ex.getExpenses().size(); i++) {
            out.println("<td>" + ex.getExpenses().get(i) + "</td>");

            if (i>0 && i%4==0) {
                out.println("</tr><tr>");

            }

        }
        out.println("</tr>");
        out.println("</table>");
        out.println("</body>");
        out.println("</html>");

this doesn't really work, since arraylist starts with 0, it gives me the table that looks like this: enter image description here

how do i get the table that looks like this:

1 2011-05-10  1  22.0
2 2011-05-10  2  5555.0 
3 2011-05-11  3  123.0 
4 2011-05-11  2  212.0 
5 2011-05-30  1  3000.0
6 2011-05-30  1  30.0
7 2011-06-06  1  307.0
8 2011-06-06  1  307.0

Manse almost 12 years

use a separate counter variable - initialise it at 1 and then check count%4 = 0
Joachim VR almost 12 years

Or adjust the condition to draw a new row: if (i>0 && (i+1)%4==0) {
Gipsy almost 12 years

could you show me where i initialize it in code and loop through it, because i've tried and all i get is a messy table
Gipsy almost 12 years

thanks, i've just read your second comment and it works well. thanks again!