包含标签：Java 的文章
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Java – jsplitpane: is there any way to show / hide one of the panes?
I have a jsplitpane with two components a and B, but sometimes I want to be able to hide B to meet any of the followin…… -
Java – Android – why is using interfaces considered a best practice for communicating between activities and fragments?
In this document "communicating with other fragments", Google tells us that the best practice for transmitting activit…… -
Java – how to avoid concurrentmodificationexception when iterating over this collection?
I need to iterate over a series of projects & sometimes added to the collection at the same time However, if I add…… -
Array – how to use data Vector. Generic. Mutable?
How to sort long list data (string, floating point, etc.) read from large files Solution In general, how is this done …… -
Error converting date in Java
String date = jsonobject.getString("needbydate"); String date = jsonobject.getString("needbydate"); DateFormat df = ne…… -
Java – Dbunit does not clean up and insert the database after each method, so the test is not independent
I have a Dao class test. I use Dbunit to create and populate the database (using Derby in memory) This is the code (Te…… -
Java – Maven: the jar will be empty – nothing is marked as contained
I have a little problem with Maven When I run the command MVN package, I get the following warning: [warning] jar will…… -
Java – NetBeans keep transferring Maven repository indexes, even if I have disabled it
Although I have set index update frequency to never: NetBeans often try to transfer Maven repository indexes, which co…… -
Java – in SpriteBatch Nested shaperenders in begin / end begin / end
Whether shaperender can be used to draw shapes between the start and end calls of SpriteBatch I tried, but there was n…… -
Java – why are short primitive types significantly slower than long or int?
I try to optimize the RAM usage of Android games by changing the int primitive to short Before I did this, I was inter…… -
Java – why doesn’t Proguard confuse method bodies?
I'm using Proguard to confuse my Jar program Everything is normal, but Proguard does not confuse local variables in th…… -
Is it possible to get from javax naming. Initialcontext get “everything”?
See English answers > code to list all the entries in JNDI on remote machine Solution Check Javadoc and I can see L…… -
Java – ‘placeholder’ character to avoid positive comparison?
I'm studying codingbat exercises for Java I encountered the following problems: My code is like this: public int match…… -
Description of volatile variables in Java documents
Here http://docs.oracle.com/javase/tutorial/essential/concurrency/atomic.html mention Can anyone provide an example? T…… -
Multithreading – how to update GUI from thread using Delphi
I am using Delphi anonymous thread to execute code If I do this from within the thread, changes will occur, but once t…… -
java – Collator plus Comparator
I have a bean collection optionitemdto (attribute tag and value), and I am now sorting by tag using such things: Colle…… -
Java – how do I call the default implementation of “toString”?
If toString is not defined, Java uses some hashes to print the class name If toString is defined, how to implement thi…… -
Java – how to create packages (folders) in eclipse projects through plug-ins
I try to develop a small plug-in for eclipse and create several java files in several folders (packages) as the starti…… -
Operator – rxjava returns the subscribed value in the function
For some reason, I sometimes want to use RX operators instead of the normal Java way to convert data structures, becau…… -
Bison java example
Does anyone know if there are some tutorials and / or examples of using GNU bison and java online I searched the Inter…… -
Java – Android WebView cookie returns null
I want to set and retrieve a cookie in WebView in Android I've tried many cookie manager scripts to try to make it wor…… -
Java – locationclient getlastlocation() returns null
I'm new to Android programming and want to start by creating a very basic application that displays the latitude and l…… -
Multithreading – how to update GUI from thread using Delphi
I am using Delphi anonymous thread to execute code If I do this from within the thread, changes will occur, but once t…… -
Java – when to create an Enum instance?
I have a simple question about enumeration in Java. Please refer to the following code When to instantiate propname Co…… -
In Java, how to define the endian of the data being written when using dataoutputstream to write a file?
I am using dataoutputstream to write to the file, but I want to change the endian of the data This is how I write byte…… -
Java – replace substrings of matching regular expressions
I get some HTML and do some string manipulation and use similar strings string sample = "\n \n 2 \n \n \ndl…… -
java. util. zip. Zipexception: duplicate entry: Android / support / V7 / graphics / drawable / drawableutils class
I just changed the support library from 23.0 0 updated to 23.1 0, now when I build the project, I receive this error: …… -
Java – a method to speed up full count sorting
I had a problem at hackerrank Due to timeout, my first attempt passed all test cases except the last one After failing…… -
Java – my autoclosable Can the close () implementation detect potential exceptions?
When implementing autocolosable to use the Java 7 try with resources statement, I want to know if there are exceptions…… -
Java – class #getdeclaredmethods () returns inherited methods
See English answers > getdeclaraedmethods() being differently in Java 7 vs. Java 81 interface A { A setX(Object…… -
Java – how to parse / decompress / decompress Maven repository indexes generated by nexus
I've been from http://mirrors.ibiblio.org/pub/mirrors/maven2/dot-index/nexus-maven-repository-index.gz Downloaded the …… -
java-8 – java. time. format. Datetimeparseexception: cannot parse text at index 3
I use Java 8 to parse the date and find the difference between the two dates This is my clip: String date1 ="01-JAN-20……