How to sort a 2 dim. array by the first column?

Question

Hi there,
I need to know, how to sort a 2 dim. String array by the first column, which means "string[0][x]".
I think, I have to implement a new comparator class. But how?
Thanks in advance for any help

Answer 1

I need to know, how to sort a 2 dim. String
array by the first column, which means
"string[0][x]".You want to sort the array using the first element in each row and that element is a String?
Let's forget about generics. Say you want to supply a Comparator. The compare method should decide the order between elements when passed two element objects. In a two-dimensional array the elements will be one-dimentional arrays and you use the first element in those arrays, like
public int compare(Object s1, Object s2) {
   String[] a1 = (String[]) s1;  // first row array
   String[] a2 = (String[]) s2;  // second row array
   return a1[0].compareTo(a2[0]); // compare first element of row arrays
}