to create a new Java array use
typeName[] arrayName = new typeName[10];
This gives an array with 10 elements.
To set the elements you can use
arrayName[index] = value;
Remember that the index number starts at 0, so the array will only go to index 9.
You can also declare the contents when the array is created
typeName[] arrayName = {value1, vaue2, ...}
The values used in the array must be objects. In java 5+ you can use primitive types with no concern due to auto-boxing.
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Object[] array = new Object[10];
// or...
Object array[] = new Object[10];
(note the declaration's [] placement can be either after the type or name of the field)
An array in java is a collection of items stored into a single unit. The array has some number of slots (elements), each slot in the array can hold an object or a primitive value. Arrays in java are objects that can be treated just like other objects in the languageArrays can contain any type of element value , but we can't store different types in a single array. We can have an array of integers or an array of strings or an array of arrays.To create an array in java ,use three steps1. Declare a variable to hold the array2. Create a new array object and assign it to the array variable3. Store things in that array
If you refering to Object then String[] something=new String[2]; Here you have to remember that something only allocated space for 2 String object but it did not created them yet. By default Objects are intantiated to null so if you try to print the content of an array System.out.println(something[0]);//print null System.out.println(something[0].toLowerCase()); Throws NullPointerException Couple other ways to create Arrays In java String[] something=new String[]{"Me","You"}; String[] something={"Me", "You"};
int array[10] = {...}; for (int i = 0; i < 10; ++i) { if (i % 2 == 0) array[i] += 5; else array[i] -= 10; }
An array is a list of several related elements. You use the subscript to specify which element you want to access. For example, in Java you might have an array called myArray, with 10 elements (numbered from 0 to 9); myArray[3] would access the fourth element in the array. A variable may be used instead of a constant.
True and false in the same time, because even so you can declare array size using notation for variables you have use constwhich makes your variable basically a constant:const int arraySize = 10;In Java, you can use any expression to define the array size, when you create the array. Once you create an Array object, however, you can't redimension it - but you can create a new Array object and destroy the old one.