翻看 Java10 里面的 ArrayList 源码,remove 方法里面有个 found: {} 这是什么意思呢?

    public boolean remove(Object o) {
        final Object[] es = elementData;
        final int size = this.size;
        int i = 0;
        found: {
            if (o == null) {
                for (; i < size; i++)
                    if (es[i] == null)
                        break found;
            } else {
                for (; i < size; i++)
                    if (o.equals(es[i]))
                        break found;
            }
            return false;
        }
        fastRemove(es, i);
        return true;
    }

地址: https://github.com/zxiaofan/JDK/blob/master/JDK10-Java%20SE%20Development%20Kit%2010/src/java.base/java/util/ArrayList.java