Jul 29, 2009 · Declare Array: int[] arr; Initialize Array: int[] arr = new int[10]; 10 represents the number of elements allowed in the array. Declare Multidimensional Array: int[][] arr; Initialize Multidimensional Array: int[][] arr = new int[10][17]; 10 rows and 17 columns and 170 elements because 10 times 17 is 170.

in your constructor you are creating another int array: public Date(){ int[] data = {0,0,0}; } Try this: data = {0,0,0}; NOTE: By the way you do NOT need to initialize your array elements if it is declared as an instance variable. Instance variables automatically get their default values, which for an integer array, the default values are all ...

Dec 21, 2009 · If you want to initialize an array in a constructor, you can't use those array initializer like. data= {10,20,30,40,50,60,71,80,90,91};

Whenever we write int[] array = new int[10], this simply initializes an array of size 10 having all elements set to 0, but I just want to initialize all elements to something other than 0 (say, -1). Otherwise I have to put a for loop just after the initialization, which ranges from index 0 to index size − 1 , and inside that loop assign each ...

Nov 22, 2012 · Now, what happens is, when you declare your array reference like this as local variable, and initialize it with an array: - int[] in = new int[5]; The array reference (in) is stored on stack, and a memory is allocated for array capable of holding 5 integer elements on heap (Remember, objects are created on Heap

Java says that the default length of a JAVA array at the time of initialization will be 10. private static final int DEFAULT_CAPACITY = 10; But the size() method returns the number of inserted elements in the array, and since at the time of initialization, if you have not inserted any element in the array, it will return zero.

Apr 15, 2014 · I don't want to define the capacity of the area like int[] myArray = new int[5]; I want to define an empty array for which a user defines the capacity, example- they enter number after number and then enter the word end to end the program, then all the numbers they entered would be added to the empty array and the amount of numbers would be the ...

Jul 1, 2010 · FWIW if you send the array to something else (like a graphical list handler) and re-initialize the array like above, the link to the graphical list handler will break. I ran into this while developing with Android. So if you want to update the list, the best thing to do is clear it and add more items with its own tools. And never use new. :p

Dec 4, 2013 · Multidimensional Array in Java Returning a multidimensional array. Java does not truely support multidimensional arrays. In Java, a two-dimensional array is simply an array of arrays, a three-dimensional array is an array of arrays of arrays, a four-dimensional array is an array of arrays of arrays of arrays, and so on...

Mar 9, 2017 · Since this is an array of int the array elements will get the default value for int's in Java of 0 automatically. If this were an array of Integer objects then you would have to fill array after creating it as the default value for an object reference is null. To set default values in an Object array you can do the following: