What's Difference Between These Statements is this same?

Question

public static void main(String[ ] args)

public static void main(String [ ]args)

public static void main(String args [ ])

Answer 1

1D Array Declaration
-------------------------------
int a[] ;
int[] a;
int []a;

=>All are valid

2D Array Declaration
--------------------------------
int[][] a;
int[][] a;
int a[][];
int[] []a;
int[] a[];
int []a[];

=>All are valid

3D Array Declaration
--------------------------------

int [][][]a;
int[][][] a;
int a[][][];

int[] [][]a;
int[] a[][];
int[] []a[];

int[][] []a;
int[][] a[];

int []a[][];
int [][]a[];

=>all are valid

But Make sure that here some example to find dimension of the variable

1)int[] a,b; => { a=1D , b=1D }

2) int[] a[] , b; => { a= 2D , b= 1D (note it ) }

3) int [] []a , b; = { here a= 2D , b = also.
2 D}

=>Be careful about 2nd and 3 rd example
now last and very dangerous example

4)int [] a , b[];
5)int[][] a, []b;
these two are generate compile time error
conclusion
=>if we want to specify the the dimension before or after the variable .this rule is applicable only for 1st variable.

Answer 2

All the same

Answer 3

also can: public static void main(String [] args) <-- JVM read it as same

Answer 4

Thanks for clearing Doubt 😊