java - 数组和Java字符串错误 : [Ljava. lang.String;@19c42c4b

Question

我创建了一个程序，允许用户输入日记条目(最多 7 天)，然后允许用户在输入条目后调用其中一天。不幸的是，这给我留下了一些我不熟悉的奇怪的字符串错误。

代码如下:

public class eDiary{
public static void main (String args[]){
    int[] days = new int[7];//get our days
    days[0] = 1;//start with 1 and not 0
    days[1] = 2;
    days[2] = 3;
    days[3] = 4;
    days[4] = 5;
    days[5] = 6;
    days[6] = 7;
    String [] events = new String[7];//events for the days
    int i = 0;

    //asks for input and counts
   for(i=0; i<7; i++){
    String event = Console.readString("Tell me the major event of day " + days[i] + "\n");
    events[i] = event; 

}

 int journal_entry = Console.readInt("Enter what day you want to hear or Enter 0 to stop \n");
 while (journal_entry != 0) { 
     System.out.println(events);
     journal_entry = Console.readInt("Enter what day you want to hear or Enter 0 to stop \n");   
    //get r dun!

输入输出:

Tell me the major event of day 1
one
Tell me the major event of day 2
two
Tell me the major event of day 3
thre
Tell me the major event of day 4
four
Tell me the major event of day 5
five
Tell me the major event of day 6
six
Tell me the major event of day 7
seven
Enter what day you want to hear or Enter 0 to stop 
1
[Ljava.lang.String;@10181f5b
Enter what day you want to hear or Enter 0 to stop 
0

大家好!

非常感谢您的快速回复。它现在似乎正在做的一件事是更换

System.out.println(events);

与

System.out.println(events[journal_entry]);

现在给我这样的输入:

Tell me the major event of day 1 
first day
Tell me the major event of day 2
second day
Tell me the major event of day 3
third day
Tell me the major event of day 4
fourth day
Tell me the major event of day 5
fifth day
Tell me the major event of day 6
sixth day
Tell me the major event of day 7
seventh day
Enter what day you want to hear or Enter 0 to stop 
1//the day im asking for
second day//spitting out the next day's entry instead of the first day's entry
Enter what day you want to hear or Enter 0 to stop 
0//this is me stopping it

Answer 1

这不是错误。

System.out.println(events);

在这一行中，您尝试打印数组，但是该语句不打印数组内容，它只打印对象类名及其哈希码。

要打印你必须使用的数组内容

System.out.println(Arrays.toString(events));

或者，如果你愿意，遍历数组并打印它的值