码农一个,直接上代码: //paramobjArr the expanded object of Array.
//param newLength the length of the new Array public static Object getNewArr(Object objArr, int newLength) { if (!objArr.getClass().isArray()) {//判断类型 return null; } // get the array's componentType Class componentType = objArr.getClass().getComponentType();//获得类型 //get a newInstance of a Array object
Object newArray = Array.newInstance(componentType, newLength);//新建数组对象
//copy the array System.arraycopy(objArr, 0, newArray, 0, Array.getLength(objArr));//把原数组数据copy到新建数组中,其中newLength要大于元objArr的length,否则此句报错 return newArray; }
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