There is no method append() on arrays. Instead as already suggested a List object can service the need for dynamically inserting elements eg. ... <看更多>

class可以是Integer、Double、Float、String...等，也可以是自己宣告的class。 方法. 方法, 說明. <ArrayList>.add(T), 新增元素T進入指定的ArrayList. ... <看更多>

Is this really needed? int[] newArray = (int[]) Array.newInstance(oldArray.getClass().getComponentType(), len + 1);. I would do something like: ... <看更多>