将布尔数组初始化为false [英] Initializing a boolean array to false

问题描述

我下面有这段代码.如何初始化每个元素= false?

I have this piece of code below. How do I initialize each element = false?

boolean[] seats = new boolean[10]

我看到了类似的问题.但是，第二行对我来说没有意义(您能解释第二行吗?).

I saw a similar question. But, the second line didnt make sense to me (Can you explain the 2nd line?).

 Boolean[] array = new Boolean[size];
 Arrays.fill(array, Boolean.FALSE);

推荐答案

boolean[]中元素的默认值为false.您无需执行任何操作.

The default value for the elements in a boolean[] is false. You don't need to do anything.

Boolean[]之所以必要是因为默认值是null.

The reason it's necessary for Boolean[] is because the default value is null.

要初始化为true，请使用

To initialize to true, use the overload of Arrays.fill that accepts a boolean[].

boolean[] seats = new boolean[10];
Arrays.fill(seats, true);

查看它是否可以在线运行: ideone

See it working online: ideone

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