Programming Example
Write a Java program to search a user-entered value in an array.
Study this program carefully to understand the logic, output, and explanation in a structured way.
Enter value to search: 30
Value found at index 2
import java.util.Scanner;
class SearchUserInput {
public static void main(String[] args) {
int[] arr = {10, 25, 30, 45, 50};
Scanner sc = new Scanner(System.in);
System.out.print("Enter value to search: ");
int key = sc.nextInt();
boolean found = false;
for (int i = 0; i < arr.length; i++) {
if (arr[i] == key) {
System.out.println("Value found at index " + i);
found = true;
break;
}
}
if (!found) {
System.out.println("Value not found");
}
}
}
The program compares the user-entered value with each element of the array one by one.
If a match is found, its index is displayed.
First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.