Incomplete solution for using input type=text value=str

I encountered a very strange problem today. Look at the following code:
SimpleDateFormat dateFormat = new SimpleDateFormat

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The code is as follows:

teFormat("yyyy year MM month dd day E ");
String date = dateFormat.format(new Date());

The original intention was to print out XXXX year XX month XX day week X
The problem is in the following code. When I want to get the formatted data, I can only get "XXXX year XX month XX day" when using the value= method, but I can't get the "week X" behind it.

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The code is as follows:

<td align="left">
<label>
<input type="text" value=<%=date%> disabled />
</label>
</td>

① Later, I thought that it might be an HTML escape problem, so I removed all the spaces in "yyyy年MM月dd日E", and the result was that the value could be obtained normally or changed to "yyyy年MM月dd日-E"
② Another method is to use escape characters to replace the contents of the string to be displayed one by one.

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The code is as follows:

<%
String result = "";
for (int i = 0; i < date.length(); i++) {
switch (date.charAt(i)) {
case '<':
result += "<";
break;
case '>':
result += ">";
break;
case '&':
result += "&";
break;
case '"':
result += "\"";
break;
case '\'':
result += "'";
break;
case ' ':
result += " ";
break;
default:
result += date.charAt(i);
}
}
%>

The references are as follows :
HTML source code to display the result description
< < less than sign or display mark
> > Greater than sign or display mark
& & can be used to display other special characters
" " quotation mark
® ® Registered
© © Copyright
™ ™ Trademark
&ensp; Half blank space
&emsp; A blank space
  No breaking whitespace

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