大约有 30,000 项符合查询结果（耗时：0.0550秒） [XML]
How is CountDownLatch used in Java Multithreading?
Can someone help me to understand what Java CountDownLatch is and when to use it?
12 Answers
...
What's the advantage of a Java enum versus a class with public static final fields?
I am very familiar with C# but starting to work more in Java. I expected to learn that enums in Java were basically equivalent to those in C# but apparently this is not the case. Initially I was excited to learn that Java enums could contain multiple pieces of data which seems very advantageous ( ht...
Why is String immutable in Java?
...e a copy, and not change its copy. When thinking of a problem with mutable java.lang.Strings, think of how C++ solves this problem (since it has mutable std::strings.
– Limited Atonement
Jan 13 '16 at 15:48
...
Run batch file as a Windows service
...
On Windows 2019 Server, you can run a Minecraft java server with these commands:
sc create minecraft-server DisplayName= "minecraft-server" binpath= "cmd.exe /C C:\Users\Administrator\Desktop\rungui1151.lnk" type= own start= auto
The .lnk file is a standard windows short...
Convert String[] to comma separated string in java
... go and guess because the answer posted in 2011 long before the release of Java 8 ;)
– Nico Huysamen
Apr 10 '18 at 4:50
|
show 4 more commen...
Performing user authentication in Java EE / JSF using j_security_check
...web application making use of JSF 2.0 (and if any components do exist) and Java EE 6 core mechanisms (login/check permissions/logouts) with user information hold in a JPA entity. The Oracle Java EE tutorial is a bit sparse on this (only handles servlets).
...
Java: method to get position of a match in a String?
...
text.indexOf(match);
See the String javadoc
share
|
improve this answer
|
follow
|
...
Is System.nanoTime() completely useless?
As documented in the blog post Beware of System.nanoTime() in Java , on x86 systems, Java's System.nanoTime() returns the time value using a CPU specific counter. Now consider the following case I use to measure time of a call:
...
Wait for page load in Selenium
...erWait(driver, TimeSpan.FromSeconds(30.00));
wait.Until(driver1 => ((IJavaScriptExecutor)driver).ExecuteScript("return document.readyState").Equals("complete"));
share
|
improve this answer
...
Java serialization: readObject() vs. readResolve()
The book Effective Java and other sources provide a pretty good explanation on how and when to use the readObject() method when working with serializable Java classes. The readResolve() method, on the other hand, remains a bit of a mystery. Basically all documents I found either mention only one o...