Java ArrayDeque - contains() Method
The java.util.ArrayDeque.contains() method is used to check whether the deque contains the specified element or not. It returns true if the deque contains the specified element, else returns false.
Syntax
public boolean contains(Object obj)
Parameters
obj |
Specify element whose presence in the deque need to be tested. |
Return Value
Returns true if the deque contains the specified element, else returns false.
Exception
NA
Example:
In the example below, the java.util.ArrayDeque.contains() method is used to check the presence of specified element in the given deque.
import java.util.*;
public class MyClass {
public static void main(String[] args) {
//creating an ArrayDeque
ArrayDeque<Integer> MyDeque = new ArrayDeque<Integer>();
//populating ArrayDeque
MyDeque.add(10);
MyDeque.add(20);
MyDeque.add(30);
//checking the presence of elements
for(int i = 5; i <= 20; i += 5) {
if(MyDeque.contains(i))
System.out.println(i +" is present in MyDeque.");
else
System.out.println(i +" is NOT present in MyDeque.");
}
}
}
The output of the above code will be:
5 is NOT present in MyDeque. 10 is present in MyDeque. 15 is NOT present in MyDeque. 20 is present in MyDeque.
❮ Java.util - ArrayDeque
