Java Programming

I think that it wasn't possible in the previous versions of java. The next code compiles fine with jdk1.5.0:

public class Test {
    public static void main(String[] args) {
        int[] arr1 = {1, 2, 3,};  // <- last comma
        
        String[] arr2;
        arr2 = new String[]{"a", "b", "c",};  // <- last comma
        
        float[] arr3 = {,};  // <- last comma

    }
}

Is it a bug or a feature?