Mam or sir please described me this code

int arr[] = {5,6,7,8,9};

	System.out.println(arr);//[I@base address of array
	
	System.out.println(arr[0]);//5
	
	System.out.println(arr.length);//5
	
	String[] sarray = {"A","B"};
	
	System.out.println(sarray);//[L@base address of array
	
	System.out.println("******************************Dynamic************);
	
	int a[] = new int[10];	
	
	for(int i = 0;i<a.length;i++) 
	{
		
	}