Public? Static electricity Invalid? main(String[]？ args){

//Method 1

int？ a[]； //Declare a file named.

A = new? int[3]； //Create a storage space for 3 integers for an integer array named A..

a[0]= 2； //Assign a value of 2 to an integer with an angle of 0 in an integer array named a..

a[ 1]= 5； //Assign 5 to the integer of 1 in the integer array named a..

a[2]= 7； //Assign a value of 7 to an integer with two corners in an integer array named a..

//Method 2

int？ B[]= New? int[3]； //Declare an integer array named b and create three integer storage spaces for this integer array.

b[0]= 2； //Assign 2 to the integer with angle 0 in the integer array named b..

b[ 1]= 5； //Assign 5 to the integer of 1 in the integer array named b..

b[2]= 7； //Assign a value of 7 to an integer with two angles in an integer array named b..

//Method 3

int？ C [] = {2,5,7}//Declare an integer array named C and create three integer storage spaces for this integer array at the same time. Assign the integer value of the 0-corner marker to 2, 1 the integer value of the corner marker to 5, and the integer value of the 2-corner marker to 7.

//Method 4

int？ D[]= New? int[]{2，5，7 }； //Declare an integer array named d and create three integer storage spaces for this integer array at the same time. Assign the integer value of the 0-corner marker to 2, 1 corner marker to 5, and the integer value of the 2-corner marker to 7.

//Note: The results of the above methods are the same, but the array names are different.

}

}