Are they equivalent? 1) ArrayList list = new ArrayList(); 2) ArrayList list = new ArrayList<>();
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Are they equivalent?
1) ArrayList<?> list = new ArrayList();
2) ArrayList<? extends Object> list = new ArrayList<>();
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Solved in 2 steps
- How can the performance of an ArrayList be measured?1. Write a generic method named array_prod() that takes an array of a generic type are returns the product of the values in the elements in the array. Make sure that the generic type extends the Number class. The Number class is defined in the java.lang package. 2. Complete the main() method to find the products of the elements in the provided arrays. Print the results in the main method using 3 decimals.How exactly can one determine how successful an ArrayList really is?
- Create a template class for a dynamic 1D array. You can model your class off of our Stringclass or the dynamic list class. Changes from Stringclass: You won't need an end-of-string element in the array. The element type is now templated. Translation will no longer be necessary. operators - and -= 'might' now make sense (erase element(s)?). ... Show how useful your template array class is by creating arrays of short integers doubles Stringclass objects (static) Pointclass objects pointers to Pointclass objects (each allocated on the heap) — all in one test application. Make sure your test application is a good/thorough test of your class. (Your test application might utilize the applyand accumulatefunctions from lecture to facilitate testing. Also note how a typical template test application is structured — using templates to ease development.Create a CircularArray class that supports an efficiently rotating array-like data structure. The class should, if at all possible, use a generic type (also known as a template) and support iteration using the for (Obj o: circularArray) notation.