How to check if Specified Element is present in the Array in Java

How to check if Specified Element is present in the Array in Java ?

Answer

To check if a specified element is present in an array in Java, you can use methods like Arrays.asList with contains or Arrays.binarySearch.

✐ Examples

1 Check if Element 30 is present in Integer Array using Arrays.asList.contains

In this example,

We create an integer array named numbers with values 10, 20, 30, 40, 50.
We convert the array to a list using Arrays.asList.
We use the contains method of the list to check if element 30 is present.
The contains method returns true if the element is found, otherwise false.

Java Program

import java.util.Arrays;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        Integer[] numbers = {10, 20, 30, 40, 50};
        List<Integer> list = Arrays.asList(numbers);
        boolean isPresent = list.contains(30);
        System.out.println("Element 30 is present: " + isPresent);
    }
}

Output

Element 30 is present: true

2 Check if Element 60 is present in Integer Array using Arrays.binarySearch

In this example,

We create a sorted integer array named numbers with values 10, 20, 30, 40, 50.
We use the Arrays.binarySearch method to check if element 60 is present in the array.
The binarySearch method returns the index of the element if found, otherwise a negative value.

Java Program

import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        int[] numbers = {10, 20, 30, 40, 50};
        int isPresent = Arrays.binarySearch(numbers, 60);
        boolean result = isPresent >= 0;
        System.out.println("Element 60 is present: " + result);
    }
}

Output

Element 60 is present: false

Summary

In this tutorial, we learned How to check if Specified Element is present in the Array in Java language with well detailed examples.

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How to check if Specified Element is present in the Array in Java

How to check if Specified Element is present in the Array in Java ?

Answer

✐ Examples

1 Check if Element 30 is present in Integer Array using Arrays.asList.contains

Java Program

Output

2 Check if Element 60 is present in Integer Array using Arrays.binarySearch

Java Program

Output

Summary

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