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I’m having a hard time getting through parameters for my jTable, these parameters being a Object[][] and a String[].
tabela = new JTable(dados, colunas);
It does not work the data is a matrix like this:
dados = new Object[1][contador_de_grupos];
And the columns like this:
colunas[i] = "Grupo "+ i+1;
Where the data of the columns receive the names of the groups within a loop of repetition, because the v=header is not static will increase or decrease in size depending on the number of groups created at the time of calculation
What a mistake you’re making?
– Haroldo_OK
Look, if the intention is to have columns of dynamical size, your approach is quite wrong. Vectors ALWAYS need to have their size defined, be one-dimensional(e.g..:
int[] vet) or multidimensional(e.g..:int[][] matriz). You cannot pass a value as dimension that is not set. If you want to use dynamic columns, you need to create your own Tablemodel.– user28595