| Java array | can be composed of primitive types and instances of classes |  |
| contains a fixed number of elements | |
has example //the following sums all the elements of an integer array:
for(int i=0; i{
sum += anIntArray[i];
} | |
| has length | |
| is more efficient than specialized collection classes | |
| is object-like but is not a true instance of a class | |
| is zero-based which means the first element is element 0 | |
| is a subtopic of The Basics of Java | |
| is declared by array declaration | |
| is not an instance of a class which you can subclass or for which you can write your own code | |
| is a kind of Java data type | |
| should be avoided if you do not a-priori know the number of items it will contain | |
| should not be used to manipulate collections of objects | |
| Java data type | has part Java data type name | |
| data abstraction | groups the pieces of data that describe some entity, so that programmers can manipulate that data as a unit | |
| helps a programmer to cope with the complexity of data | |
| hides the details of data | |
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