问题描述
当我有一个 for循环时，我使用i来引用我的数组，对象等元素.
When I have a for loop, I use the i to refer to the elements of my array, objects, etc.
赞:
当前项目:myArray[i]
下一项:myArray[i+1]
上一项:myArray[i-1]
Like:
Current item: myArray[i]
Next item: myArray[i+1]
Previous item: myArray[i-1]
但是目前，我正在使用 foreach 循环(for (Object elem : col) {).
如何参考上一项?
(我需要搜索与for (Object object : getComponents())相同的数组".
But at the moment, I'm using a foreach loop ( for (Object elem : col) { ).
How do I refer to the previous item?
(I need to do a search an 'array', which I'm doing with for (Object object : getComponents()).
但是当它返回true(以便找到我想要的东西)时，它应该在 previous 和 next 项目上执行代码.
But when it returns true (so it finds what I look for), it should perform the code on the previous and the next item.
说明:我有java.awt.Component个元素！
推荐答案
JButton prev, next, curr;
Component[] arr = getComponents();
for(int i=1;i<arr.length-1;i++) {
if (yourcondition == true) {
curr = (JButton) arr[i];
prev = (JButton) arr[i-1];
next = (JButton) arr[i+1];
}
}
这篇关于Java-如何在迭代过程中引用上一个和下一个元素?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！