java 数组注意点
int[] array1 = new int[4]; int[] array2 = new int[6]; int[] array3 = new int[8]; array2 = array1; array3 = array1; System.out.println(array1.length); System.out.println(array2.length); System.out.println(array3.length); array3[0] = 2; System.out.println(array1[0]); System.out.println(array2[0]); System.out.println(array3[0]);
数组一旦初始化长度不变,array赋值只是引用的变化