从jTable中的几个选定行中获取数据

Question

I need to get different values from a jTable, according to the selected rows (by the user).
I guess the code I already have should do that, but it always shows the same nr in all rows.
Can you guys get me some help ?

int linha  = Tabela.getSelectedRowCount();
Gerar ger = modelo.getGerar(linha);
System.out.println(linha);

for(int j = 0; j < linha; j ++) 
{
    int nr = ger.getNr();
    System.out.println(nr);

    char[] chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHJIKLMNOPQRSTUVWXYZ0123456789".toCharArray();
    StringBuilder sb = new StringBuilder();
    Random random = new Random();
    for (int i = 0; i < 8; i++) 
    {
        char c = chars[random.nextInt(chars.length)];
        sb.append(c);
    }

    String output = sb.toString();
    System.out.println(output);

    Gerar novo = new Gerar(nr, output);
    modelo.adicionaNovoGerar(novo);
}

Update:

public class Gerar implements Serializable 
{
    private Integer Nr;
    private String Passe;

    public Gerar(Integer Nr, String Passe) 
    {
        this.Nr = Nr;
        this.Passe = Passe;
    }

    public Integer getNr() 
    {
        return Nr;
    }

    public void setNr(Integer Nr) 
    {
        this.Nr = Nr;
    }
}

Answer 1

 int linha  = Tabela.getSelectedRowCount();

This will give the no of selected Rows not the list of selected rows.

For which you have to go with getSelectedRows

Tabela.getSelectedRows();

which will returns the indices of all selected rows[return an integer array int[] ]

And you are assigning the selectedRow count to class ger

 Gerar ger = modelo.getGerar(linha);

and inside the for loop you are calling

int nr = ger.getNr();

which will return the same value as many times you call, as the value is set before forloop

Answer 2

This is the way I do it:

int[] selectedRows = table.getSelectedRows();
if (selectedRows.length != 0) {
    for (int counter : selectedRows) {
        String value= table.getModel().getValueAt(counter, Constants.COLUMN).toString();
        /*
        * do stuff
        */
    }
}

And to give some context, I used this with a JTable that had info about the files in a folder. The app permitted me to delete files so, I used that piece of code to retrieve the name of the files selected and to delete them one by one.

In your case (i think) this line:

String value= table.getModel().getValueAt(counter, Constants.COLUMN).toString();

will turn into this:

Gerar ger = modelo.getGerar(counter);

NB: I strongly recommend the use of a lower case letter as the first letter of an attribute( ex: private Integer Nr; -> private Integer nr;)