Summary
In this chapter, we have explored arrays in Java. Arrays are data structures that allow us to store multiple values of the same data type in a contiguous block of memory. They provide an efficient way to organize lists of data.
We began by discussing the declaration and initialization of arrays. We learned about different ways to declare and initialize arrays, including using the shortcut syntax for array initialization. We also covered how to initialize arrays with default values.
After that, we discussed how to access and modify array elements using indexes. We learned about the importance of the array length and that we can find out the length by using the length
property. We also talked about avoiding ArrayIndexOutOfBoundsExceptions
by validating array indexes.
We then looked at iterating over arrays using both the traditional for
loop and the enhanced for
loop (the for-each
loop).
After this, we explored multidimensional arrays, which are arrays of arrays,...