Java 8 : passing paramenter to anonymous function during call

Question

我无法在 Java 8 中实现它，它是一个简单的匿名函数

// definde
Runnable callback = (param) -> {
    for(int i = 0; i < param; i++) {
        System.out.println(i);
    }
};

// call consume it
callback.run(10);

Answer 1

Runnable 不带参数，但 IntConsumer是:

IntConsumer callback = (param) -> {
    for (int i = 0; i < param; i++) {
        System.out.println(i);
    }
};

callback.accept(10);

您还可以浏览other functional interfaces in Java 8 .