Gain insights into Java programming by exploring conditional statements, loops, math, logic, inheritance, generics, and arraylists, to become an intermediate Java developer.

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You'll start with a simple hello world program and proceed to cover common concepts such as Conditional Statements, Loop Statements, Math, and Logic in Java, before moving on to more advanced concepts like Inheritance, Generics, and ArrayLists, along with much more.

By the time you're done, you'll be an intermediate level Java developer, ready to take on your own projects.

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class FindMax {
    public static < T extends Comparable < T >> T array_max(T data[], int n) {
        T max = data[0];
        int i;
        for (i = 1; i < n; i++) {
            if (max.compareTo(data[i]) < 0) {
                max = data[i];
            }
        }
        return max;
    }
    public static void main( String args[] ) {
        Integer[] inputs1 = {2,8,20,3,4};
        Double[] inputs2 = {2.7,3.8,5.5,6.7,9.7};
        System.out.println(array_max(inputs1,5));
        System.out.println(array_max(inputs2,5));
    }
}

# Explanation

- `public static <T extends Comparable<T>> T array_max(T data[], int n)` 

  A static function is defined that extends the Comparable class (already implemented in Java) since we use a comparison function later in the program. `T` defines the generic user data-type. An array of generic type `T` is also defined as `T data[]`, where `n` is the size of `data[]`



- `T max = data[0];`

   Declares a variable `max` of generic type and store the element at 0th index in it.

- `for(int i = 1; i < n; i++)` 

  for loop to traverse through the array `data[]`


- `if(max.compareTo(data[i]) < 0)`  

  check if the `max` is smaller than the element at the $i$th index. If yes, then the built-in function `.compareTo()` returns -1 in this case. 

- `max = data[i];` 

  If the element at `ith` index is greater than `max` then replace the `max` with the element at the $i$th position.

- At the end return `max` to the calling point. 

In this review, solution of the challenge 'Finding Max in an Array' from the previous lesson is provided.

Getting Started with Java!

Variables & User Input

Simple Maths & Logic

Strings and String Processing

Conditional Statements

Loops

Methods

Arrays

Classes and Inheritance

Generics

ArrayLists

Java Exam

Solution Review: Finding Max in an Array

Given solution