Executing a method multiple times using a lambda expression in Java

Question

What is the easiest and quickest way to execute a code block multiple times using a lambda expression in Java 8? For example, a code that will replace the following:

for (int i = 0; i < 20; i ++) {
 doSomething();
}

Eran · Accepted Answer · 2015-03-22 17:33:14Z

7

You can use an IntStream.range, but I don't see much advantage to this approach over the loop you are already using.

IntStream.range(0,20).forEach(i -> doSomething());

answered Mar 22, 2015 at 17:33

Eran

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5 Comments

Omri Over a year ago

I was looking for something like that. Code is much cleaner this way. Thx.

Omri Over a year ago

One downside for it though is that it can't accept code which throws a checked exception. This is Java's fault since Consumer's Accept method can't throw a checked exception. baaah.

beresfordt Over a year ago

You could wrap the code which throws a checked exception in something which catches and rethrows as unchecked

Paul Boddington Over a year ago

or you could just use a for loop.

Joffrey Over a year ago

@pbabcdefp I completely agree with you. I really love Java 8's features and lambdas in particular, but IMHO there are things that are not made simpler by using lambdas. For loops are part of these things (especially when checked exceptions join the party).

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