「java在线提问」java在线答疑
今天给各位分享java在线提问的知识，其中也会对java在线答疑进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！
本文目录一览：
java问题在线解答
您好，提问者：
我写的控制台的，你自己看一下吧。
import java.io.*;
public class CopyFile{
//异常我直接throws了，如有需要请自行修改
public static void main(String[] args)throws Exception{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("请输入源文件路径");
String str = null;
File file1 = new File(br.readLine());
if(!file1.exists()){
throw new RuntimeException("文件或者不存在！");
}
System.out.println("请输入目标文件路径");
File file2 = new File(br.readLine());
if(!file2.createNewFile()){
throw new RuntimeException("创建文件失败或者文件已存在！");
}
FileInputStream fis = new FileInputStream(file1);
FileOutputStream fos = new FileOutputStream(file2);
byte[] by = new byte[8192];
int len = 0;
while((len=fis.read(by))!=-1){
fos.write(by,0,len);
}
fos.close();
fis.close();
System.out.println("OK");
}
}
//测试结果：
请输入源文件路径
F:\a.txt
请输入目标文件路径
F:\aa.txt
OK
问一些Java问题，JAVA高手帮帮忙，在线等
1 不会 0
2 2 3
3 3 0 null
4 数组名 下标
5 A
6 D
7 A
8 Object[][] objs = new Object[9][9]
9 数组是有序数据的集合，数组中的每个元素都有相同的数据类型，可用一个统一的数组名和下标来访问唯一的数组元素。
数组要进行定义和分配空间才能使用。type[] arryName = null;
分配内存空间需要用new arrayName = new type[xxxx];xxx为数组大小
访问第一个元素：arryName[0]
11
public class Test {
public static void main(String[] args) {
int[] sqrt = new int[11];
for(int i = 10; i = 20; i++){
sqrt[i] = i * i;
}
}
}
12
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int[] intAry = new int[10];
for(int i = 0; i 10; i++){
System.out.println("Please input number " + i);
intAry[i] = scanner.nextInt();
}
System.out.println("Reversed array is:");
for(int i = 9; i = 0; i--){
System.out.print(intAry[i] + "\t");
}
}
}
13这个比较麻烦，有空再写
Java初学者问题，在线等，求解答。
什么也没改，帮你输出些信息，自己分析。
public class Sushu {
public static void main(String[] args) {
for (int i = 2; i = 100; i++) {
int temp = (int) Math.sqrt(i);
System.out.println("for:1 i = " + i + " ;temp = " + temp);
for (int j = 2; j = temp; j++) {
System.out.println("for:2 i = " + i + " ;j = " + j
+ " i%j = " + i % j);
if (i % j == 0) {
break;
}
System.out.println(j + " " + temp + " ------ " + (j temp)
+ " ------");
if (j temp) {
System.out.println(i);
}
}
}
}
}
结果：
for:1 i = 2 ;temp = 1
for:1 i = 3 ;temp = 1
for:1 i = 4 ;temp = 2
for:2 i = 4 ;j = 2 i%j = 0
for:1 i = 5 ;temp = 2
for:2 i = 5 ;j = 2 i%j = 1
2 2 ------ false ------
for:1 i = 6 ;temp = 2
for:2 i = 6 ;j = 2 i%j = 0
for:1 i = 7 ;temp = 2
for:2 i = 7 ;j = 2 i%j = 1
2 2 ------ false ------
for:1 i = 8 ;temp = 2
for:2 i = 8 ;j = 2 i%j = 0
for:1 i = 9 ;temp = 3
for:2 i = 9 ;j = 2 i%j = 1
2 3 ------ false ------
for:2 i = 9 ;j = 3 i%j = 0
for:1 i = 10 ;temp = 3
for:2 i = 10 ;j = 2 i%j = 0
for:1 i = 11 ;temp = 3
for:2 i = 11 ;j = 2 i%j = 1
2 3 ------ false ------
for:2 i = 11 ;j = 3 i%j = 2
3 3 ------ false ------
for:1 i = 12 ;temp = 3
for:2 i = 12 ;j = 2 i%j = 0
for:1 i = 13 ;temp = 3
for:2 i = 13 ;j = 2 i%j = 1
2 3 ------ false ------
for:2 i = 13 ;j = 3 i%j = 1
3 3 ------ false ------
for:1 i = 14 ;temp = 3
for:2 i = 14 ;j = 2 i%j = 0
for:1 i = 15 ;temp = 3
for:2 i = 15 ;j = 2 i%j = 1
2 3 ------ false ------
for:2 i = 15 ;j = 3 i%j = 0
for:1 i = 16 ;temp = 4
for:2 i = 16 ;j = 2 i%j = 0
for:1 i = 17 ;temp = 4
for:2 i = 17 ;j = 2 i%j = 1
2 4 ------ false ------
for:2 i = 17 ;j = 3 i%j = 2
3 4 ------ false ------
for:2 i = 17 ;j = 4 i%j = 1
4 4 ------ false ------
for:1 i = 18 ;temp = 4
for:2 i = 18 ;j = 2 i%j = 0
for:1 i = 19 ;temp = 4
for:2 i = 19 ;j = 2 i%j = 1
2 4 ------ false ------
for:2 i = 19 ;j = 3 i%j = 1
3 4 ------ false ------
for:2 i = 19 ;j = 4 i%j = 3
4 4 ------ false ------
for:1 i = 20 ;temp = 4
for:2 i = 20 ;j = 2 i%j = 0
for:1 i = 21 ;temp = 4
for:2 i = 21 ;j = 2 i%j = 1
2 4 ------ false ------
for:2 i = 21 ;j = 3 i%j = 0
for:1 i = 22 ;temp = 4
for:2 i = 22 ;j = 2 i%j = 0
for:1 i = 23 ;temp = 4
for:2 i = 23 ;j = 2 i%j = 1
2 4 ------ false ------
for:2 i = 23 ;j = 3 i%j = 2
3 4 ------ false ------
for:2 i = 23 ;j = 4 i%j = 3
4 4 ------ false ------
for:1 i = 24 ;temp = 4
for:2 i = 24 ;j = 2 i%j = 0
for:1 i = 25 ;temp = 5
for:2 i = 25 ;j = 2 i%j = 1
2 5 ------ false ------
for:2 i = 25 ;j = 3 i%j = 1
3 5 ------ false ------
for:2 i = 25 ;j = 4 i%j = 1
4 5 ------ false ------
for:2 i = 25 ;j = 5 i%j = 0
for:1 i = 26 ;temp = 5
for:2 i = 26 ;j = 2 i%j = 0
for:1 i = 27 ;temp = 5
for:2 i = 27 ;j = 2 i%j = 1
2 5 ------ false ------
for:2 i = 27 ;j = 3 i%j = 0
for:1 i = 28 ;temp = 5
for:2 i = 28 ;j = 2 i%j = 0
for:1 i = 29 ;temp = 5
for:2 i = 29 ;j = 2 i%j = 1
2 5 ------ false ------
for:2 i = 29 ;j = 3 i%j = 2
3 5 ------ false ------
for:2 i = 29 ;j = 4 i%j = 1
4 5 ------ false ------
for:2 i = 29 ;j = 5 i%j = 4
5 5 ------ false ------
for:1 i = 30 ;temp = 5
for:2 i = 30 ;j = 2 i%j = 0
for:1 i = 31 ;temp = 5
for:2 i = 31 ;j = 2 i%j = 1
2 5 ------ false ------
for:2 i = 31 ;j = 3 i%j = 1
3 5 ------ false ------
for:2 i = 31 ;j = 4 i%j = 3
4 5 ------ false ------
for:2 i = 31 ;j = 5 i%j = 1
5 5 ------ false ------
for:1 i = 32 ;temp = 5
for:2 i = 32 ;j = 2 i%j = 0
for:1 i = 33 ;temp = 5
for:2 i = 33 ;j = 2 i%j = 1
2 5 ------ false ------
for:2 i = 33 ;j = 3 i%j = 0
for:1 i = 34 ;temp = 5
for:2 i = 34 ;j = 2 i%j = 0
for:1 i = 35 ;temp = 5
for:2 i = 35 ;j = 2 i%j = 1
2 5 ------ false ------
for:2 i = 35 ;j = 3 i%j = 2
3 5 ------ false ------
for:2 i = 35 ;j = 4 i%j = 3
4 5 ------ false ------
for:2 i = 35 ;j = 5 i%j = 0
for:1 i = 36 ;temp = 6
for:2 i = 36 ;j = 2 i%j = 0
for:1 i = 37 ;temp = 6
for:2 i = 37 ;j = 2 i%j = 1
2 6 ------ false ------
for:2 i = 37 ;j = 3 i%j = 1
3 6 ------ false ------
for:2 i = 37 ;j = 4 i%j = 1
4 6 ------ false ------
for:2 i = 37 ;j = 5 i%j = 2
5 6 ------ false ------
for:2 i = 37 ;j = 6 i%j = 1
6 6 ------ false ------
for:1 i = 38 ;temp = 6
for:2 i = 38 ;j = 2 i%j = 0
for:1 i = 39 ;temp = 6
for:2 i = 39 ;j = 2 i%j = 1
2 6 ------ false ------
for:2 i = 39 ;j = 3 i%j = 0
for:1 i = 40 ;temp = 6
for:2 i = 40 ;j = 2 i%j = 0
for:1 i = 41 ;temp = 6
for:2 i = 41 ;j = 2 i%j = 1
2 6 ------ false ------
for:2 i = 41 ;j = 3 i%j = 2
3 6 ------ false ------
for:2 i = 41 ;j = 4 i%j = 1
4 6 ------ false ------
for:2 i = 41 ;j = 5 i%j = 1
5 6 ------ false ------
for:2 i = 41 ;j = 6 i%j = 5
6 6 ------ false ------
for:1 i = 42 ;temp = 6
for:2 i = 42 ;j = 2 i%j = 0
for:1 i = 43 ;temp = 6
for:2 i = 43 ;j = 2 i%j = 1
2 6 ------ false ------
for:2 i = 43 ;j = 3 i%j = 1
3 6 ------ false ------
for:2 i = 43 ;j = 4 i%j = 3
4 6 ------ false ------
for:2 i = 43 ;j = 5 i%j = 3
5 6 ------ false ------
for:2 i = 43 ;j = 6 i%j = 1
6 6 ------ false ------
for:1 i = 44 ;temp = 6
for:2 i = 44 ;j = 2 i%j = 0
for:1 i = 45 ;temp = 6
for:2 i = 45 ;j = 2 i%j = 1
2 6 ------ false ------
for:2 i = 45 ;j = 3 i%j = 0
for:1 i = 46 ;temp = 6
for:2 i = 46 ;j = 2 i%j = 0
for:1 i = 47 ;temp = 6
for:2 i = 47 ;j = 2 i%j = 1
2 6 ------ false ------
for:2 i = 47 ;j = 3 i%j = 2
3 6 ------ false ------
for:2 i = 47 ;j = 4 i%j = 3
4 6 ------ false ------
for:2 i = 47 ;j = 5 i%j = 2
5 6 ------ false ------
for:2 i = 47 ;j = 6 i%j = 5
6 6 ------ false ------
for:1 i = 48 ;temp = 6
for:2 i = 48 ;j = 2 i%j = 0
for:1 i = 49 ;temp = 7
for:2 i = 49 ;j = 2 i%j = 1
2 7 ------ false ------
for:2 i = 49 ;j = 3 i%j = 1
3 7 ------ false ------
for:2 i = 49 ;j = 4 i%j = 1
4 7 ------ false ------
for:2 i = 49 ;j = 5 i%j = 4
5 7 ------ false ------
for:2 i = 49 ;j = 6 i%j = 1
6 7 ------ false ------
for:2 i = 49 ;j = 7 i%j = 0
for:1 i = 50 ;temp = 7
for:2 i = 50 ;j = 2 i%j = 0
for:1 i = 51 ;temp = 7
for:2 i = 51 ;j = 2 i%j = 1
2 7 ------ false ------
for:2 i = 51 ;j = 3 i%j = 0
for:1 i = 52 ;temp = 7
for:2 i = 52 ;j = 2 i%j = 0
for:1 i = 53 ;temp = 7
for:2 i = 53 ;j = 2 i%j = 1
2 7 ------ false ------
for:2 i = 53 ;j = 3 i%j = 2
3 7 ------ false ------
for:2 i = 53 ;j = 4 i%j = 1
4 7 ------ false ------
for:2 i = 53 ;j = 5 i%j = 3
5 7 ------ false ------
for:2 i = 53 ;j = 6 i%j = 5
6 7 ------ false ------
for:2 i = 53 ;j = 7 i%j = 4
7 7 ------ false ------
for:1 i = 54 ;temp = 7
for:2 i = 54 ;j = 2 i%j = 0
for:1 i = 55 ;temp = 7
for:2 i = 55 ;j = 2 i%j = 1
2 7 ------ false ------
for:2 i = 55 ;j = 3 i%j = 1
3 7 ------ false ------
for:2 i = 55 ;j = 4 i%j = 3
4 7 ------ false ------
for:2 i = 55 ;j = 5 i%j = 0
for:1 i = 56 ;temp = 7
for:2 i = 56 ;j = 2 i%j = 0
for:1 i = 57 ;temp = 7
for:2 i = 57 ;j = 2 i%j = 1
2 7 ------ false ------
for:2 i = 57 ;j = 3 i%j = 0
for:1 i = 58 ;temp = 7
for:2 i = 58 ;j = 2 i%j = 0
for:1 i = 59 ;temp = 7
for:2 i = 59 ;j = 2 i%j = 1
2 7 ------ false ------
for:2 i = 59 ;j = 3 i%j = 2
3 7 ------ false ------
for:2 i = 59 ;j = 4 i%j = 3
4 7 ------ false ------
for:2 i = 59 ;j = 5 i%j = 4
5 7 ------ false ------
for:2 i = 59 ;j = 6 i%j = 5
6 7 ------ false ------
for:2 i = 59 ;j = 7 i%j = 3
7 7 ------ false ------
for:1 i = 60 ;temp = 7
for:2 i = 60 ;j = 2 i%j = 0
for:1 i = 61 ;temp = 7
for:2 i = 61 ;j = 2 i%j = 1
2 7 ------ false ------
for:2 i = 61 ;j = 3 i%j = 1
3 7 ------ false ------
for:2 i = 61 ;j = 4 i%j = 1
4 7 ------ false ------
for:2 i = 61 ;j = 5 i%j = 1
5 7 ------ false ------
for:2 i = 61 ;j = 6 i%j = 1
6 7 ------ false ------
for:2 i = 61 ;j = 7 i%j = 5
7 7 ------ false ------
for:1 i = 62 ;temp = 7
for:2 i = 62 ;j = 2 i%j = 0
for:1 i = 63 ;temp = 7
for:2 i = 63 ;j = 2 i%j = 1
2 7 ------ false ------
for:2 i = 63 ;j = 3 i%j = 0
for:1 i = 64 ;temp = 8
for:2 i = 64 ;j = 2 i%j = 0
for:1 i = 65 ;temp = 8
for:2 i = 65 ;j = 2 i%j = 1
2 8 ------ false ------
for:2 i = 65 ;j = 3 i%j = 2
3 8 ------ false ------
for:2 i = 65 ;j = 4 i%j = 1
4 8 ------ false ------
for:2 i = 65 ;j = 5 i%j = 0
for:1 i = 66 ;temp = 8
for:2 i = 66 ;j = 2 i%j = 0
for:1 i = 67 ;temp = 8
for:2 i = 67 ;j = 2 i%j = 1
2 8 ------ false ------
for:2 i = 67 ;j = 3 i%j = 1
3 8 ------ false ------
for:2 i = 67 ;j = 4 i%j = 3
4 8 ------ false ------
for:2 i = 67 ;j = 5 i%j = 2
5 8 ------ false ------
for:2 i = 67 ;j = 6 i%j = 1
6 8 ------ false ------
for:2 i = 67 ;j = 7 i%j = 4
7 8 ------ false ------
for:2 i = 67 ;j = 8 i%j = 3
8 8 ------ false ------
for:1 i = 68 ;temp = 8
for:2 i = 68 ;j = 2 i%j = 0
for:1 i = 69 ;temp = 8
for:2 i = 69 ;j = 2 i%j = 1
2 8 ------ false ------
for:2 i = 69 ;j = 3 i%j = 0
for:1 i = 70 ;temp = 8
for:2 i = 70 ;j = 2 i%j = 0
for:1 i = 71 ;temp = 8
for:2 i = 71 ;j = 2 i%j = 1
2 8 ------ false ------
for:2 i = 71 ;j = 3 i%j = 2
3 8 ------ false ------
for:2 i = 71 ;j = 4 i%j = 3
4 8 ------ false ------
for:2 i = 71 ;j = 5 i%j = 1
5 8 ------ false ------
for:2 i = 71 ;j = 6 i%j = 5
6 8 ------ false ------
for:2 i = 71 ;j = 7 i%j = 1
7 8 ------ false ------
for:2 i = 71 ;j = 8 i%j = 7
8 8 ------ false ------
for:1 i = 72 ;temp = 8
for:2 i = 72 ;j = 2 i%j = 0
for:1 i = 73 ;temp = 8
for:2 i = 73 ;j = 2 i%j = 1
2 8 ------ false ------
for:2 i = 73 ;j = 3 i%j = 1
3 8 ------ false ------
for:2 i = 73 ;j = 4 i%j = 1
4 8 ------ false ------
for:2 i = 73 ;j = 5 i%j = 3
5 8 ------ false ------
for:2 i = 73 ;j = 6 i%j = 1
6 8 ------ false ------
for:2 i = 73 ;j = 7 i%j = 3
7 8 ------ false ------
for:2 i = 73 ;j = 8 i%j = 1
8 8 ------ false ------
for:1 i = 74 ;temp = 8
for:2 i = 74 ;j = 2 i%j = 0
for:1 i = 75 ;temp = 8
for:2 i = 75 ;j = 2 i%j = 1
2 8 ------ false ------
for:2 i = 75 ;j = 3 i%j = 0
for:1 i = 76 ;temp = 8
for:2 i = 76 ;j = 2 i%j = 0
for:1 i = 77 ;temp = 8
for:2 i = 77 ;j = 2 i%j = 1
2 8 ------ false ------
for:2 i = 77 ;j = 3 i%j = 2
3 8 ------ false ------
for:2 i = 77 ;j = 4 i%j = 1
4 8 ------ false ------
for:2 i = 77 ;j = 5 i%j = 2
5 8 ------ false ------
for:2 i = 77 ;j = 6 i%j = 5
6 8 ------ false ------
for:2 i = 77 ;j = 7 i%j = 0
for:1 i = 78 ;temp = 8
for:2 i = 78 ;j = 2 i%j = 0
for:1 i = 79 ;temp = 8
for:2 i = 79 ;j = 2 i%j = 1
2 8 ------ false ------
for:2 i = 79 ;j = 3 i%j = 1
3 8 ------ false ------
for:2 i = 79 ;j = 4 i%j = 3
4 8 ------ false ------
for:2 i = 79 ;j = 5 i%j = 4
5 8 ------ false ------
for:2 i = 79 ;j = 6 i%j = 1
6 8 ------ false ------
for:2 i = 79 ;j = 7 i%j = 2
7 8 ------ false ------
for:2 i = 79 ;j = 8 i%j = 7
8 8 ------ false ------
for:1 i = 80 ;temp = 8
for:2 i = 80 ;j = 2 i%j = 0
for:1 i = 81 ;temp = 9
for:2 i = 81 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 81 ;j = 3 i%j = 0
for:1 i = 82 ;temp = 9
for:2 i = 82 ;j = 2 i%j = 0
for:1 i = 83 ;temp = 9
for:2 i = 83 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 83 ;j = 3 i%j = 2
3 9 ------ false ------
for:2 i = 83 ;j = 4 i%j = 3
4 9 ------ false ------
for:2 i = 83 ;j = 5 i%j = 3
5 9 ------ false ------
for:2 i = 83 ;j = 6 i%j = 5
6 9 ------ false ------
for:2 i = 83 ;j = 7 i%j = 6
7 9 ------ false ------
for:2 i = 83 ;j = 8 i%j = 3
8 9 ------ false ------
for:2 i = 83 ;j = 9 i%j = 2
9 9 ------ false ------
for:1 i = 84 ;temp = 9
for:2 i = 84 ;j = 2 i%j = 0
for:1 i = 85 ;temp = 9
for:2 i = 85 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 85 ;j = 3 i%j = 1
3 9 ------ false ------
for:2 i = 85 ;j = 4 i%j = 1
4 9 ------ false ------
for:2 i = 85 ;j = 5 i%j = 0
for:1 i = 86 ;temp = 9
for:2 i = 86 ;j = 2 i%j = 0
for:1 i = 87 ;temp = 9
for:2 i = 87 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 87 ;j = 3 i%j = 0
for:1 i = 88 ;temp = 9
for:2 i = 88 ;j = 2 i%j = 0
for:1 i = 89 ;temp = 9
for:2 i = 89 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 89 ;j = 3 i%j = 2
3 9 ------ false ------
for:2 i = 89 ;j = 4 i%j = 1
4 9 ------ false ------
for:2 i = 89 ;j = 5 i%j = 4
5 9 ------ false ------
for:2 i = 89 ;j = 6 i%j = 5
6 9 ------ false ------
for:2 i = 89 ;j = 7 i%j = 5
7 9 ------ false ------
for:2 i = 89 ;j = 8 i%j = 1
8 9 ------ false ------
for:2 i = 89 ;j = 9 i%j = 8
9 9 ------ false ------
for:1 i = 90 ;temp = 9
for:2 i = 90 ;j = 2 i%j = 0
for:1 i = 91 ;temp = 9
for:2 i = 91 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 91 ;j = 3 i%j = 1
3 9 ------ false ------
for:2 i = 91 ;j = 4 i%j = 3
4 9 ------ false ------
for:2 i = 91 ;j = 5 i%j = 1
5 9 ------ false ------
for:2 i = 91 ;j = 6 i%j = 1
6 9 ------ false ------
for:2 i = 91 ;j = 7 i%j = 0
for:1 i = 92 ;temp = 9
for:2 i = 92 ;j = 2 i%j = 0
for:1 i = 93 ;temp = 9
for:2 i = 93 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 93 ;j = 3 i%j = 0
for:1 i = 94 ;temp = 9
for:2 i = 94 ;j = 2 i%j = 0
for:1 i = 95 ;temp = 9
for:2 i = 95 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 95 ;j = 3 i%j = 2
3 9 ------ false ------
for:2 i = 95 ;j = 4 i%j = 3
4 9 ------ false ------
for:2 i = 95 ;j = 5 i%j = 0
for:1 i = 96 ;temp = 9
for:2 i = 96 ;j = 2 i%j = 0
for:1 i = 97 ;temp = 9
for:2 i = 97 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 97 ;j = 3 i%j = 1
3 9 ------ false ------
for:2 i = 97 ;j = 4 i%j = 1
4 9 ------ false ------
for:2 i = 97 ;j = 5 i%j = 2
5 9 ------ false ------
for:2 i = 97 ;j = 6 i%j = 1
6 9 ------ false ------
for:2 i = 97 ;j = 7 i%j = 6
7 9 ------ false ------
for:2 i = 97 ;j = 8 i%j = 1
8 9 ------ false ------
for:2 i = 97 ;j = 9 i%j = 7
9 9 ------ false ------
for:1 i = 98 ;temp = 9
for:2 i = 98 ;j = 2 i%j = 0
for:1 i = 99 ;temp = 9
for:2 i = 99 ;j = 2 i%j = 1
2 9 ------ false ------
for:2 i = 99 ;j = 3 i%j = 0
for:1 i = 100 ;temp = 10
for:2 i = 100 ;j = 2 i%j = 0
关于java在线提问和java在线答疑的介绍到此就结束了，不知道你从中找到你需要的信息了吗 ？如果你还想了解更多这方面的信息，记得收藏关注本站。
发布于：2022-12-01，除非注明，否则均为原创文章，转载请注明出处。