大约有 9,000 项符合查询结果（耗时：0.0270秒） [XML]
Which annotation should I use: @IdClass or @EmbeddedId
The JPA (Java Persistence API) specification has 2 different ways to specify entity composite keys: @IdClass and @EmbeddedId .
...
What is the Simplest Way to Reverse an ArrayList?
...nt, but also more verbose.
Alternatively, we can rewrite the above to use Java 8's stream API, which some people find more concise and legible than the above:
static <T> List<T> reverse(final List<T> list) {
final int last = list.size() - 1;
return IntStream.rangeClosed(0...
How to open existing project in Eclipse
... the next screen to decide whether or not to copy. I was looking for plain Java, not Android, and Lanaru's answer helped.
– AnneTheAgile
Apr 11 '13 at 16:54
...
Objective-C Static Class Level variables
I have a class Film, each of which stores a unique ID. In C#, Java etc I can define a static int currentID and each time i set the ID i can increase the currentID and the change occurs at the class level not object level. Can this be done in Objective-C? I've found it very hard to find an answer for...
Begin, Rescue and Ensure in Ruby?
...s always evaluated. That's why it's called ensure. So, it is equivalent to Java's and C#'s finally.
The general flow of begin/rescue/else/ensure/end looks like this:
begin
# something which might raise an exception
rescue SomeExceptionClass => some_variable
# code that deals with some excep...
Returning value from Thread
... Here is an example of CountDownLatch: developer.android.com/reference/java/util/concurrent/…
– Seagull
Oct 27 '17 at 7:21
add a comment
|
...
Create instance of generic type whose constructor requires a parameter?
...
At least you CAN do such constraints - Java always disappoints me.
– Marcel Jackwerth
Apr 9 '09 at 0:58
...
What is the purpose of a stack? Why do we need it?
... hardware, is not a new idea at all. It did not originate with MSIL, LLVM, Java bytecode, or any other modern infrastructures. The earliest implementation of this strategy I'm aware of is the pcode machine from 1966.
The first I personally heard of this concept was when I learned how the Infocom i...
Gson ignoring map entries with value=null
...fault value for these fields as the JSON format is converted back into its Java form.
Here's how you would configure a Gson instance to output null:
Gson gson = new GsonBuilder().serializeNulls().create();
share
...
Test if element is present using Selenium WebDriver?
...
I found that this works for Java:
WebDriverWait waiter = new WebDriverWait(driver, 5000);
waiter.until( ExpectedConditions.presenceOfElementLocated(by) );
driver.FindElement(by);
...