javautilNoSuchElementException No value present at javautilOptionalgetOptionaljava135 java8

This exception is thrown when you try to call the get() method on an Optional object that does not contain a value. The get() method is used to retrieve the value from the Optional object, but it should only be called if you are certain that the object contains a value.

To avoid this exception, you should always check if the Optional object contains a value before calling the get() method. You can do this by using the isPresent() method or by using methods like ifPresent() or orElse() to handle both cases - when the object contains a value and when it doesn't.

Here's an example of how to handle Optional correctly:

Optional<String> optionalValue = Optional.ofNullable(someValue);
if (optionalValue.isPresent()) {
    String value = optionalValue.get();
    // Do something with the value
} else {
    // Handle the case when the value is not present
}

Alternatively, you can use the ifPresent() method to perform an action only if the value is present:

Optional<String> optionalValue = Optional.ofNullable(someValue);
optionalValue.ifPresent(value -> {
    // Do something with the value
});

Or you can use the orElse() method to provide a default value if the value is not present:

Optional<String> optionalValue = Optional.ofNullable(someValue);
String value = optionalValue.orElse("default value");

By using these methods correctly, you can avoid the NoSuchElementException in your code