Java和Android在循环中移除集合中元素

转载请注明：https://blog.youkuaiyun.com/u012854870/article/details/94738588

Kotlin实现数据类：

data class TestBean(
    var test: Int
)

Kotlin写法实现：

/**
 * Created by pangli on 2019/7/5.
 * 备注：循环之中移除集合元素
 */
fun main() {
    val a = Stack<WeakReference<TestBean>>()
    for (i in 1..5) {
        val testBean = TestBean(i)
        a.add(WeakReference(testBean))
    }

    val it = a.iterator()
    while (it.hasNext()) {
        it.next()
        it.remove()
        println(a)
    }
}

Java写法实现：

/**
 * Created by pangli on 2019/7/5.
 * 备注：循环之中移除集合元素
 */
public class JavaTest {

    public static void main(String[] args) {
        Stack<WeakReference<TestBean>> a = new Stack<>();
        for (int i = 0; i < 5; i++) {
            a.add(new WeakReference<>(new TestBean(i)));
        }
        for (Iterator<WeakReference<TestBean>> it = a.iterator(); it.hasNext(); ) {
            it.next();
            it.remove();// 使用迭代器来进行安全的加锁操作
            System.out.println(a);
        }
    }
}