如何将Lambda表达式更改为方法参考

Question

I need help regarding changing lambda expression to method reference:

lambda expression:

intervalCodes.stream().forEach(code -> {
            modProfile.addIntervalUsageCode(createIntervalCode(code));
          });

Can I change the above expression to like this:

intervalCodes.stream().forEach(modProfile::addIntervalUsageCode(createIntervalCode));

Any suggestions please?

Answer 1

Assuming createIntervalCode() is a side-effect-free instance method, you can split your lambda into two method references:

intervalCodes.stream()
        .map(this::createIntervalCode)
        .forEach(modProfile::addIntervalUsageCode);

If it's a static method, use ClassName::createIntervalCode .