Calculating Total Value in JTable Column Using New Value

[irwansyahazniel]

I want to calculate total value in index [0][2], previous value is 0, but I have replaced and display it with the calculation result “1/y”, and when I calculate total value, value that summed is previous value that containing “0”, this my code,

 
//observation table
                                         //0             1        2    3      4      5     6                       
         titleColumn = new Object[]{"Time (Second)","Medicine", "1/y","x2", "X/Y", "Y^", "Error"};
                                   //0   1    2   3   4   5   6
        allData = new Double[][]  {{1.0,1.02,0.0,0.0,0.0,0.0,0.0},
                                   {2.0,0.667,0.0,0.0,0.0,0.0,0.0},
                                   {3.0,0.367,0.0,0.0,0.0,0.0,0.0},
                                   {4.0,0.278,0.0,0.0,0.0,0.0,0.0},
                                   {5.0,0.237,0.0,0.0,0.0,0.0,0.0},
                                   {6.0,0.187,0.0,0.0,0.0,0.0,0.0},
                                   {7.0,0.155,0.0,0.0,0.0,0.0,0.0},
                                   {8.0,0.156,0.0,0.0,0.0,0.0,0.0},
                                   {9.0,0.142,0.0,0.0,0.0,0.0,0.0},
                                   {10.0,0.111,0.0,0.0,0.0,0.0,0.0},
                                   {11.0,0.12,0.0,0.0,0.0,0.0,0.0},
                                   {12.0,0.097,0.0,0.0,0.0,0.0,0.0},
                                   {13.0,0.099,0.0,0.0,0.0,0.0,0.0},
                                   {14.0,0.089,0.0,0.0,0.0,0.0,0.0},
                                   {15.0,0.079,0.0,0.0,0.0,0.0,0.0},
                                   {0.0,0.0,0.0,0.0,0.0,0.0,0.0}};
 
        tableModelObservation = new DefaultTableModel(allData, titleColumn);
        tableObservation.setModel(tableModelObservation);
        int row,column,inputRow,inputColumn;
 
        //index [0][2] was replaced with calculation 1/y
        row = 0;
        column = 1;
        inputRow = 0;
        inputColumn = 2;
        double onePerY = 0;
        for(int a=0;a<allData.length;a++){
            onePerY = 1/allData[row][column];
tableObservation.getModel().setValueAt(onePerY,  inputRow, inputColumn);  
            inputRow++;
            row++;
        }    
 
        //calculation total 1/y, summing is still using previous value "0"
        row = 0;
        column = 2;
        inputRow = 15;
        inputColumn = 2;
        double totalOnePerY = 0;
        for (int a=0;a<allData.length;a++){
            totalOnePerY += allData[row][column];
            row++;
        }
        //displaying result in row index[15] and column index[2] 
        tableObservation.getModel().setValueAt(totalOnePerY, inputRow, inputColumn);
 

this column values ”1/y” after calculation process

What should I do, to be able to summing it using new value ?
all the assistance that you gave, I would appreciate it, thank you


[1]: http://i.stack.imgur.com/wTYFt.png

[Rabbit]

You set the value in tableModelObservation but you're adding up the values in allData. They are not the same.