How does java define a two-dimensional array ?, Java defines two-dimensional arrays

How does java define a two-dimensional array ?, Java defines two-dimensional arrays

Java uses [] [] to define two-dimensional arrays and can also be initialized at the same time.

Below are some examples
Float [] [] numthree; // defines a float-type 2-dimensional array
Numthree = new float [5] [5]; // allocate space for five rows and five columns
Numthree [0] [0] = 1.1f; // use the subscript index to access 1 row and 1 column = 1.1
Long [] [] numfive = new long [5] []; // defines an irregular long array.
Numfive [0] = new long [5]; // allocate 5 columns to 1st rows
// Define an array of the double type and assign values to the space of three rows and three columns.
Double [] [] numsix = {1.111D, 2.222D, 3.333D}, {4.444D, 5.555D, 6.666D }};

Int [] [] numseven = new int [] [] {10, 20, 30}, {40, 50}, {60 }};