1.4.33 #

解答 #

Integer = 4(int) + 8(对象开销) = 12

Date = 3 × 4(int × 3) + 8(对象开销) = 20

Counter = 4(String 的引用) + 4(int) + 8(对象开销) = 16

int[] = 8(对象开销) + 4(数组长度) + 4N = 12 + 4N

double[] = 8(对象开销) + 4(数组长度) + 8N = 12 + 8N

double[][] = 8(对象开销) + 4(数组长度) + 4M(引用) + M(12 + 8N)(M 个一维数组) = 12 + 16M + 8MN

String = 8(对象开销) + 3 × 4(int × 3) + 4(字符数组的引用) = 24

Node = 8(对象开销) + 4 × 2(引用 × 2) = 16

Stack = 8(对象开销) + 4(引用) + 4(int) = 16