My question is, in which condition int or Integer should be used and is there any advantage of either of them over another? ... <看更多>

Version >= Java SE 7. placeholderCopy List<Integer> ints = new ArrayList<>();. 幸運的是，當需要時，可以使用評估為 int 的表示式來代替 Integer ... ... <看更多>

import java.lang.annotation.Native;. /**. * The {@code Integer} class wraps a value of the primitive type. * {@code int} in an object. ... <看更多>