int[] a1 = new int[]{1,2,3};
String[] str2 = new String[]{"a","b","c"};
System.out.println(Arrays.asList(a1));
System.out.println(Arrays.asList(str2));
为什么会打印出如下结果呢?
[[I@64dc420b]
[a, b, c]
String[] str2 = new String[]{"a","b","c"};
System.out.println(Arrays.asList(a1));
System.out.println(Arrays.asList(str2));
为什么会打印出如下结果呢?
[[I@64dc420b]
[a, b, c]
System.out.println(Arrays.asList(a2));这样既可Integer才是一个类,int不是
下边是Arrays的一个实现: public static String toString(long[] a) {
if (a == null)
return "null";
int iMax = a.length - 1;
if (iMax == -1)
return "[]"; StringBuilder b = new StringBuilder();
b.append('[');
for (int i = 0; ; i++) {
b.append(a[i]);
if (i == iMax)
return b.append(']').toString();
b.append(", ");
}
}