Searching number
  
 Source Code
  

    
// Contributed by - Anuj Das ( GC College, Silchar - @ Department of Computer Science )
import java.util.Scanner;

class FindPosition {
  public static void main(String[ ] args) {
      Scanner  sc = new Scanner(System.in);
      int num, size;
      System.out.print("Enter the size of the array:  ");
      size = sc.nextInt();
      int []arr = new int[size];
      System.out.println("Enter " + size + " Elements:  ");
      for (int i=0; i < size; i++) {
          arr[i] = sc.nextInt();
      }
      System.out.print("Given Array:  ");
      for (int i=0; i < size; i++) {
          System.out.print(arr[i] + "  ");
      }

      System.out.print("\nEnter the number to search in the array:  ");
      num = sc.nextInt();
      for (int i=0; i < size; i++) {
          if (num == arr[i]) {
              System.out.println(num + " found at position: " + (i+1));
              return;
          }
      }
      System.out.println(num + " not found in this Array!");       
  }
}
    

cmd->  javac  FindPosition.java
cmd->  java  FindPosition

Enter the size of the array:  6
Enter 6 Elements:
45
65
12
10
02
45
Given Array:   45   65   12   10   2   45
Enter the number to search in the array:  10
10 found at position: 4




Enter the size of the array:  8
Enter 8 Elements:
10
21
54
87
98
88
65
12
Given Array:   10   21   54   87   98   88   65   12
Enter the number to search in the array:  22
22 not found in this Array!