Writing String and Double values stored in Array to a file using BufferWriter

I have a simple question regarding how to write my object array data into a file Using a buffered writer, I have had no joy and I need some help please.

Please excuse my lack of knowledge I have only just started learning Java.

 Object[][] data  = {
                          {"dd/mm/yyyy", new Double(5), new Boolean(false), 
                          {"21/12/2013",  new Double(5), new Boolean(false)};
                开发者_运维知识库    }

   String    sDividendDate1       =   (String)data[0][0];
   Double    dDividend1           =   (Double)data[0][1];


try
 {
       FileWriter file = new FileWriter(NewCodeFile);
       BufferedWriter buffer = new BufferedWriter(file);
       buffer.write(sDividendDate1);
       buffer.newLine();
       **buffer.write(sDividend1);  /*This is where the compiler does not like 
       [I think it is because I am trying to write a double variable into a char 
       text buffer?]**/
}

How do I write the double value stored in dDividend1 in the same file after I have written sDividendDate1 into the same file. Any help is always greatly appreciated.

Many thanks

Kind Regards Stephen

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Try String.valueOf(sDividend1)or Double.toString(...).

You might also want to check java.text.NumberFormat.

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Stephen, Based on your code above you have referenced an undeclared variable:

Object[][] data = { 
    {
        {
            "dd/mm/yyyy", 
            new Double(5), 
            new Boolean(false)
        },
        {
             "21/12/2013", 
             new Double(5), 
             new Boolean(false)
        }
    };

    String sDividendDate1 = (String)data[0][0]; 
    Double dDividend1 = (Double)data[0][1];

    try { 
        FileWriter file = new FileWriter(NewCodeFile); 
        BufferedWriter buffer = new BufferedWriter(file);
        buffer.write(sDividendDate1);
        buffer.newLine();
        buffer.write(dDividend1); /* you had this as sDividend1 which was not declared */
    } catch(Exception ex) {
        //catch logic here
    }

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If you want to write Objects in a binary representation you should use an ObjectOutputStream