Create a 20 by 30 array of String objects : Array Elements « Java Source And Data Type « SCJP

public class MainClass {
  public static void main(String[] argv) {
    String[][] s = new String[20][30];
    // The above notation is also equivalent to the following:

    s = new String[20][];
    for (int i = 0; i < 20; ++i)
      s[i] = new String[30];


1.17.Array Elements
1.17.1.Array Element Initialization Values
1.17.2.Combine declaration, construction, and initialization into a single step
1.17.3.The array size is inferred from the number of elements within the curly braces.
1.17.4.An array can be initialized by assigning a value to each element
1.17.5.Create a 20 by 30 array of String objects