java - 将动态数组中的对象存储到静态数组中-Java

Question

我有一个像这样的动态对象数组:

 private Array<Block> blocks=new Array<Block>();

我像这样迭代这个数组:

   for (Block b : blocks) {
    sytem.out.printlan(b);
 //eack block object should be taken and transfer to static array here
  }

我这里有一个相同类型的空静态数组:

private Block frames[] = new Block[]{};//size should be  4

我想从 block 数组中获取随机元素并将其存储在帧数组内？

我该怎么做？

Answer 1

看看java的Random库here .

你可以这样做:

Random rand = new Random();

int randomIndex = rand.nextInt(blocks.size());

frames[i] = blocks.get(randomIndex);