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How do I create a file and write to it in Java?
...can use the Files class to write to files:
Creating a text file:
List<String> lines = Arrays.asList("The first line", "The second line");
Path file = Paths.get("the-file-name.txt");
Files.write(file, lines, StandardCharsets.UTF_8);
//Files.write(file, lines, StandardCharsets.UTF_8, StandardO...
How to annotate MYSQL autoincrement field with JPA annotations
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Please make sure that id datatype is Long instead of String, if that
will be string then @GeneratedValue annotation will not work and the
sql generating for
@Id @GeneratedValue(strategy=GenerationType.IDENTITY)
private String id;
create table VMS_AUDIT_RECORDS (id **varc...
Rails ActionMailer - format sender and recipient name/email address
... email, you can end up with an invalid From header by simply concatenating strings. Here is a safe way:
require 'mail'
address = Mail::Address.new email # ex: "john@example.com"
address.display_name = name.dup # ex: "John Doe"
# Set the From or Reply-To header to the following:
address.format # r...
Javascript what is property in hasOwnProperty?
...Property("name")); //true
console.log(Object.prototype.hasOwnProperty("toString");) //true because in above snapshot you can see, that there is a function toString in meta-information
I hope it's clear !
share
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How to write a multidimensional array to a text file?
...[i,:,:] in this case
for data_slice in data:
# The formatting string indicates that I'm writing out
# the values in left-justified columns 7 characters in width
# with 2 decimal places.
np.savetxt(outfile, data_slice, fmt='%-7.2f')
# Writing out a brea...
How to check if a folder exists
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Generate a file from the string of your folder directory
String path="Folder directory";
File file = new File(path);
and use method exist.
If you want to generate the folder you sould use mkdir()
if (!file.exists()) {
System.out....
Cache busting via params
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The param ?v=1.123 indicates a query string, and the browser will therefore think it is a new path from, say, ?v=1.0. Thus causing it to load from file, not from cache. As you want.
And, the browser will assume that the source will stay the same next time you ...
Extract substring using regexp in plain bash
I'm trying to extract the time from a string using bash, and I'm having a hard time figuring it out.
4 Answers
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Get output parameter value in ADO.NET
...a couple using()'s
using (SqlConnection conn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand("sproc", conn))
{
// Create parameter with Direction as Output (and correct name and type)
SqlParameter outputIdParam = new SqlParameter("@ID", SqlDbType.Int)
{
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Parsing domain from a URL
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Don’t forget to quote your strings like host and path.
– Gumbo
Dec 29 '09 at 11:02
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