Count Target Number in Java

How can we count the occurrences of a specific target number in an array using Java?

Given an array of numbers and a target number, how can we determine how many times the target number appears in the array?

Solution: Counting Target Number Occurrences in Java

To count the occurrences of a specific target number in an array using Java, we can create a program that iterates over the elements in the array and compares each element with the target number. Whenever a match is found, we increment a count variable to keep track of the number of occurrences.

Let's break down the steps to achieve this:

Step 1: Define a Public Class in Java

In Java, we start by creating a public class called "CountTargetNumber" in a file named "CountTargetNumber.java". This class will contain the main method where our program will run.

Step 2: Declare Variables

We declare the necessary variables: an array of integers named "numbers" and an integer named "target".

Step 3: Initialize Variables

We initialize the "numbers" array with the provided list of numbers and assign the "target" variable with the target value. In this case, the numbers are [4, 5, 4, 2, 3, 4, 4, 2, 4] and the target number is 4.

Step 4: Count Variable

Create a variable called "count" and set it to 0. This variable will keep track of the number of times the target appears in the array.

Step 5: Iterate Over the Array

Use a for loop to iterate over each element in the "numbers" array. Within the loop, check if the current element is equal to the target value.

Step 6: Increment Count

If the condition is true, increment the "count" variable by 1 each time a match is found.

Step 7: Print the Count

After the loop ends, print the final value of "count" to the console. This will display the number of times the target number appeared in the array.

By following these steps and the provided Java code snippet, you can effectively count the occurrences of a specific target number in an array using Java.