sum列的amount.i想要计算1000 + 2000 + 3000 + 4000

Question

我如何计算JTable列。我想计算1000 + 2000 + 3000 + 4000并将其列为列数

量|名称| ID

1000 | X | 1  2000 | Y | 2  3000 | W | 3  4000 | Z | 4

Answer 1

Try this
//Global declaration
int a=0,b=0;

DefaultTbleModel model=new DefaultTableModel(data,header);
JTable table=new JTable(model);

for(int i=0;i<table.getRowCount();i++){
            a=a+Integer.parseInt(data.get(i).get(column));

            b=b+Integer.parseInt(data.get(i).get(column));
        }
        tj=Integer.toString(a);
        tb=Integer.toString(b);
        Object[] d1={"Total",tj,tb};
        model.addRow(d1);