convert Object[] to String[] with null values

[Brennen smith]

I am attempting to convert an Object[] to String[] using this code

ResultSet resultSet = db.selectQuery(bquery); 
Object[][] allData = DatabaseConnection.data(resultSet);
String[] allData1 = new String[14]; 
for (int i=0;i<14;i++) allData1[i]=allData[0][i].toString();

The problem is when the Object[] contains null values I need them to copied over and make sure the populated values maintain their place in the array. All of the values that could possibly return null are BigDecimal Type longs with 2 decimal places. They could be defaulted to 0.00 If I had to. Can I add something to my For loop to allow for this, something along the lines of...

 if (Object[i] = null){
Object[i] = 0.00
}

???

Thanks in advance,

[dennis deems]

You're going to want to use BigDecimal.ZERO. Object[i] = 0.00 will result in a Double.

[Brennen smith]

Thanks for the reply. Now to clarify your saying instead of
Object[i] = 0.00;
use
Object[i] = BigDecimal.ZERO; This gives me an error Incompatible types String to BigDecimal.

[Brennen smith]

Ignore me I figured it out...

Object[i]= BigDecimal.ZERO.toString();

But i am encountering an issue with my if then statement

if (allData[0][i].toString()!=null){
               allData1[i]=allData[0][i].toString();  
             }
             else{
                 allData1[i]= BigDecimal.ZERO.toString();
                 
             }

I also tried

if (allData[0][i].equals(null)){ 

What is the proper way to check my Object[i].

[Paul Clapham]

Can I ask why you're converting all that data to String? You're throwing away information when you do that.

[Brennen smith]

to make it short... I am returning 15 columns of data from a SQL query I only want to display the first 4 rows but still retain the information to the initial 15 returned. Once I set the result to my TabelModel the remaining rows are lost. Heres the method...

DatabaseConnection db = new DatabaseConnection(); 
         
         ResultSet resultSet = db.selectQuery(bquery);
         Object[][] allData = DatabaseConnection.data(resultSet);
         String[] allData1 = new String[14]; //Is static and declared elsewhere in my program just listed here for clarification
         for (int i=0;i<14;i++) {
             if (allData[0][i].equals(null)){
               allData1[i]= BigDecimal.ZERO.toString();
             }
             else{
               allData1[i]=allData[0][i].toString();  
                 
                 
             }
         }
         resultSet.beforeFirst();
         dtm_search_model = new MyDefaultTableModel(
           DatabaseConnection.data(resultSet),
           DatabaseConnection.headings(resultSet));
        return dtm_search_model;

[Brennen smith]

Ok well I figured it out. I remembered that the equals() method checks for value equality, that it compares the contents of two objects. And because null is not an object it was throwing an error. I have replaced it with..

if (allData[0][i]==null){

which works correctly.
Thanks again guys,