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How do I prevent the modification of a private field in a class?
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You must return a copy of your array.
public String[] getArr() {
return arr == null ? null : Arrays.copyOf(arr, arr.length);
}
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inserting characters at the start and end of a string
...ying to find a way to insert a number of L's at the beginning and end of a string. So if I have a string which says
7 Answ...
error, string or binary data would be truncated when trying to insert
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From @gmmastros's answer
Whenever you see the message....
string or binary data would be truncated
Think to yourself... The field is NOT big enough to hold my data.
Check the table structure for the customers table. I think you'll find that the length of one or more fields is N...
How to get the insert ID in JDBC?
... Statement.RETURN_GENERATED_KEYS);
) {
statement.setString(1, user.getName());
statement.setString(2, user.getPassword());
statement.setString(3, user.getEmail());
// ...
int affectedRows = statement.executeUpdate();
if (affectedRows =...
Why does isNaN(“ ”) (string with spaces) equal false?
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JavaScript interprets an empty string as a 0, which then fails the isNAN test. You can use parseInt on the string first which won't convert the empty string to 0. The result should then fail isNAN.
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php中json_decode()和json_encode()的使用方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...对 JSON 格式的字符串进行编码
说明：
mixed json_decode ( string $json [, bool $assoc ] )
接受一个 JSON 格式的字符串并且把它转换为 PHP 变量
参数：
json
待解码的 json string 格式的字符串。
assoc
当该参数为 TRUE 时，将返回 array ...
@RequestParam vs @PathVariable
...equest, the values for param1 and param2 can be accessed as below:
public String getDetails(
@RequestParam(value="param1", required=true) String param1,
@RequestParam(value="param2", required=false) String param2){
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}
The following are the list of parameters supported by the @Reque...
How do I compare two strings in Perl?
How do I compare two strings in Perl?
6 Answers
6
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Sending HTTP POST Request In Java
... well defined format. We need to convert our input to this format:
Map<String,String> arguments = new HashMap<>();
arguments.put("username", "root");
arguments.put("password", "sjh76HSn!"); // This is a fake password obviously
StringJoiner sj = new StringJoiner("&");
for(Map.Entry&l...
endsWith in JavaScript
How can I check if a string ends with a particular character in JavaScript?
31 Answers
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