Check If a Value Is Present in an Array in Java

At first sort the array −

int intArr[] = {55, 20, 10, 60, 12, 90, 59};
// sorting array
Arrays.sort(intArr);

Now, set the value to be searched in an int variable −

int searchVal = 12;

Check for the presence of a value in an array −

int retVal = Arrays.binarySearch(intArr,searchVal);
boolean res = retVal > 0 ? true : false;

Following is an example to check if a value is present in an array −

Example

import java.util.Arrays;
public class Main {
   public static void main(String[] args) {
      // initializing unsorted int array
      int intArr[] = {55, 20, 10, 60, 12, 90, 59};
      // sorting array
      Arrays.sort(intArr);
      // let us print all the elements available in list
      System.out.println("The sorted int array is:");
      for (int number : intArr) {
         System.out.println("Number = " + number);
      }
      // entering the value to be searched
      int searchVal = 12;
      int retVal = Arrays.binarySearch(intArr,searchVal);
      boolean res = retVal > 0 ? true : false;
      System.out.println("Is element 12 in the array? = " + res);
      System.out.println("The index of element 12 is : " + retVal);
   }
}

Output

The sorted int array is:
Number = 10
Number = 12
Number = 20
Number = 55
Number = 59
Number = 60
Number = 90
Is element 12 in the array? = true
The index of element 12 is : 1