2021
05-19
05-19
Java基础之容器Vector详解
一、前言知识补充:Arrays.copyOf函数:publicstaticint[]copyOf(int[]original,intnewLength){int[]copy=newint[newLength];System.arraycopy(original,0,copy,0,Math.min(original.length,newLength));returncopy;}可见copyOf()在内部新建一个数组,调用arrayCopy()将original内容复制到copy中去,并且长度为newLength。返回copy;继续看一下Sys...
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