Quote:
Originally Posted by ElderGeek 
I have a float[] array, which I need to convert to a Double[] array. The task does not seem as trivial as I expected it to be. Can anyone give me some guidance?
You have to do it element by element and store the new elements in your new array. e.g.
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Double[] convert(float[] f) {
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Double[] d= new Double[f.length];
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for (int i= 0; i < f.length; i++)
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d[i]= new Double(f); // convert any way you like
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return d;
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}
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Arrays of type D can't be cast to an array of type B, not even when type D extends type B (a D 'is a' B). Here is a small example that shows why you can't do it:
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public class Animal { ... }
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public class Poodle extends Animal { ... }
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public class Lion extends Animal { ... }
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Poodle[] poodles = { /* cute little poodles in here */ };
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Animal[] animals= (Animal[])poodles; // this is not allowed because:
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animals[0]= new Lion(); // the poodles won't survive ;-)
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kind regards,
Jos
