如何从电子表格中读取这些坐标？

Question

Okay so I have a spreadsheet of x, y, and z coordinates. The x and y are integers, and the z is a float. I want to read all of the coordinates, but I'm getting an error when I try to run it. This is the error:

Exception in thread "main" java.lang.NumberFormatException: For input string: "XCoord"
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source

And here is my code:

BufferedReader br = new BufferedReader(new FileReader("./data/graphXYZ.csv"));
    String dataRow = br.readLine(); // Read first line.

    // The while checks to see if the data is null. If 
    // it is, we've hit the end of the file. If not, 
    // process the data.
    int i = 0;
    int xCoord, yCoord;
    float zCoord;

    while (dataRow != null) {
        String[] dataArray = dataRow.split(",");
        xCoord = Integer.parseInt(dataArray[0]);
        yCoord = Integer.parseInt(dataArray[1]);
        zCoord = Float.parseFloat(dataArray[2]);
        for(String item:dataArray) {
            System.out.print(xCoord + "\t");
            System.out.print(yCoord + "\t");
            System.out.print(zCoord + "\t");
        }
        System.out.println(); // Print the data line.
        dataRow = br.readLine(); // Read next line of data.
    }

Answer 1

Your answer is right there in the exception that is thrown. As esej says in the comments, you are parsing a first row of column names (as opposed to numbers). Hence the NumberFormatException for input string "XCoord"

The solution is to skip the first row, or remove it from the data file.