How to throw an Exception in a Consumer Java 8

OEH :

Is there any way to throw an Exception while using a consumer in java 8?

For example:

    private void fooMethod(List<String> list) throws Exception {

    list.forEach(element->{
        if(element.equals("a")) {
            throw new Exception("error!");
        }
    });

}

This gives me a compiler error saying: Unhandled exception type Exception

What is the correct way to throw an exception in this case?

Sourav Jha :

Since Exception and its subclass (other than RuntimeException) are checked Exception and in lambda, you can't throw checked exception. Hence you should use RuntimeException:

private void fooMethod(List<String> list) throws Exception {
    list.forEach(element->{
        if(element.equals("a")) {
            throw new RuntimException("error!");
        }
    });
}

Guess you like

Origin http://43.154.161.224:23101/article/api/json?id=345925&siteId=1

How to throw an Exception in a Consumer Java 8

How to throw an Exception in a Consumer Java 8

How to throw an Exception in a Consumer Java 8

How to throw an Exception in a Consumer Java 8

Java throw: throw an exception

Throw exception in optional in Java8

Why doesn't for-each method in java not throw an exception when a Function type argument is passed instead of Consumer?

How do I throw an exception in my Java code?

How to not throw a generically specified exception?

Java throw: what's the matter with exception throw

JAVA Consumer throws an exception

Java exception 02 (catch and throw exception)

How to exception handling in Java? Throws, throw, try, catch, finally, respectively, how to use?

How to validate before saving and throw checked exception

How to throw an exception in a function from another thread?

How to throw a custom exception from CompletableFuture?

How to throw an exception back in JSON in Spring Boot

How to throw a custom exception from inside JAVA Transformer in Mule ESB 3.8?

Use throw to throw an exception

java and custom exception throw, throws using

Simple to use java exception thrown throws and throw the

Java Mock throw an exception, then return a value?

Android SDK manager throw Exception with Java 9

Difference throw throw throw an exception and throws the exception

How to throw an exception in sqlserver function or stored procedure.

How can I make an incorrect pointcut expression throw an exception?

4. Clause 8: Why it is not recommended to throw an exception in the destructor?

Exception triggers in Java are all actively thrown through throw

Java exception handling throws, throw, try...catch..finally

[JAVA exception handling | try-catch, throw, throws]