Lazy field initialization with lambdas

Question

I would like to implement lazy field initialization (or deferred initialization) without an if statement and taking advantage of lambdas. So, I would like to have the same b

Answer 1

Within your actual lambda, you can simply update the fooField with a new lambda, such as:

class A{
    private Supplier fooField = () -> {
       T val = expensiveInit();
       fooField = () -> val;
       return val;
    };

    public T getFoo(){
       return fooField.get();
    }
}

Again this solution is not thread-safe as is the .Net Lazy, and does not ensure that concurrent calls to the getFoo property return the same result.