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How to create a new database after initally installing oracle database 11g Express Edition?
...ou start SQL Developer
on your system, you must provide the full path to java.exe in step 1.
For step 4, you need a user name and password.
For step 6, you need a host name and port.
To connect to Oracle Database XE from SQL Developer:
Start SQL Developer.
For instructions...
30岁之后，程序员该向什么方向发展？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...，国外的大公司都是在用开源的方式做技术，尤其是基于Java和Go语言的牛逼项目。
我们小公司创业公司，或者大公司都可以直接拿来使用。
我觉得做开源有2个好处：集思广益和精雕细琢。让大家来贡献并且促使对自己的代码...
HashMap with multiple values under the same key
...s.
3. Using a tuple
// you'll have to write or download a Tuple class in Java, (.NET ships with one)
// create our map
Map<String, Tuple2<Person, Person> peopleByForename = new HashMap<>();
// populate it
peopleByForename.put("Bob", new Tuple2(new Person("Bob Smith",
...
Go > operators
... i int32 = -2;
u >> 1; // Is 0x40000000 similar to >>> in Java
i >> 1; // Is -1 similar to >> in Java
So when applied to an unsigned integer, the bits at the left are filled with zero, whereas when applied to a signed integer, the bits at the left are filled with the ...
Selenium WebDriver: Wait for complex page with JavaScript to load
I have a web application to test with Selenium. There is a lot of JavaScript running on page load.
This JavaScript code is not so well written but I can't change anything.
So waiting for an element to appear in the DOM with findElement() method is not an option.
I want to create a generic func...
Difference between BeautifulSoup and Scrapy crawler?
...ed data from their pages.
But it has some limitations when data comes from java script or
loading dynamicaly, we can over come it by using packages like splash,
selenium etc.
BeautifulSoup:
Beautiful Soup is a Python library for pulling data out of HTML and
XML files.
we can use this package fo...
What is the easiest way to ignore a JPA field during persistence?
...he JPA annotation marking a field as not persistable
transient keyword in java. Beware - using this keyword, will prevent the field to be used with any serialization mechanism from java. So, if the field must be serialized you'd better use just the @Transient annotation.
...
What can , and be used for?
...ent (dto), here this is Sender_DTO and assign to senderMB._strID
Sender_MB.java
public String clickBtnDetail(sender_DTO sender_dto) {
this._strID = sender_dto.getStrID();
return "Receiver?faces-redirect=true&includeViewParams=true";
}
The link when clicked will become ht...
Is JavaScript a pass-by-reference or pass-by-value language?
...
It's interesting in JavaScript. Consider this example:
function changeStuff(a, b, c)
{
a = a * 10;
b.item = "changed";
c = {item: "changed"};
}
var num = 10;
var obj1 = {item: "unchanged"};
var obj2 = {item: "unchanged"};
...
How do I view the SQLite database on an Android device? [duplicate]
...database is to use the library DatabaseManager_For_Android.
It's a single Java activity file; just add it to your source folder.
You can view the tables in your app database, update, delete, insert rows to you table. Everything from inside your app.
When the development is done remove the Java fil...