包含标签：Java 的文章
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Java: what are ioexceptions in BufferedReader’s readline()?
I can "fix" the following exception with a try catch loop, but I can't understand the reason >Why does the "in. Rea…… -
Date to UTC format Java
I have such a string 2013-10-22t01:37:56 I need to change this string to UTC date format, such as mm / DD / yyyy KK: m…… -
Java – severe: configure org apache. catalina. deploy. An error occurred while using the application listener for the applicationlistener class
This is the web site where I tried to run my project XML error This is the main mistake I face when I try to run the w…… -
Java – about statically preserving monomer mode
According to the situation of volatile / lazy singles, eager singles, normal singles and through enum, I have develope…… -
Update existing Excel files in Java Apache poi
I'm trying to write a java program that runs every day (using the task scheduler) and attaches a column to the Excel s…… -
Java – cannot prevent ant from generating compiler sun proprietary API warnings
I call javac from this ant script: <javac srcdir="src" destdir="build/classes" source="1.6" target="1.6" de…… -
Java – what is runtime binding?
I was browsing the Android development training document and came across: "Intent is an object that provides runtime b…… -
Java – use Apache POI to make columns read-only
I am using Apache POI to generate Excel files I need to make column 4 read-only, and the other 2 columns will be edite…… -
JavaFX: how to connect two nodes in a row?
I want to connect two nodes (from the center of the first to the center of the second) with a line Initial ideas: Supp…… -
Java Swing button color
See the English answer > how to set background color of a button in Java GUI? 7 Now my next stage is to add color t…… -
Java – the broadcastreceiver did not receive the action of completing the download
I'm trying to capture download completion events, but my broadcastreceiver doesn't receive them This is the receiver: …… -
Java: force two-way linked objects
I design a game engine in Java The core of this engine is that there are two types of assets and attributes, among whi…… -
Java – spring boot extends crudrepository
I'm at @ L_ 301_ 0 @ use hibernate in boot application I am creating a new crudrepository for all my model objects to …… -
Conditionally remove Java methods at compile time
I'm trying to implement something like a c# preprocessor I know that Java does not have the same preprocessor function…… -
Java – cannot send a multipart / mixed request to pop up MVC based rest services
I have a spring MVC and resteasy rest service. I need to test it by sending multipart / mixed requests The service cod…… -
Java – how do I sign Mac OS X applications in Linux?
For OS X, I distribute Java applications to DMG Due to the release of mountain lion, the following error message will …… -
Java – the difference between enumeration and enumeration
There is no difference between enumeration data types and enumeration interfaces I became confused between the two I g…… -
Java – how to call the functions of the main activities from a custom arrayadapter?
I've seen a lot of similar problems and don't seem to have any work I have a main class of such functions, edit, displ…… -
Java – how to represent the type parameters of general polymorphic static methods in jshell?
In pure Java, I can write class P { static <A> A id (A x) { return x; } static int y = P.<Integer>…… -
Java – too much parameter code in a factory constructor?
I have a factory class that currently has six parameters in its constructor. I just need to add another one Usually, i…… -
How to use java to detect the current display?
I have 2 monitors connected, so I can launch my java application on the primary or secondary monitor The question is: …… -
Java – differences between JDBC
What is the main difference between spring JDBC and JDBC? Solution Let me look at a simple example of using JDBC: fina…… -
Java – simpledateformat parse (string STR) will not throw an exception when STR = 2011 / 12 / 12aaa?
Here is an example: public MyDate() throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/d…… -
You can use Java util. Is logging configured to use compressed log files?
Can I configure Java util. Logging to compress the log file when it "scrolls" to a new log file? For example, an excer…… -
What is the difference between pointers and reference variables in Java?
My java book explains that to use objects, we can assign them to reference variables How is it different from a pointe…… -
Java – Eclipse JSP – no color, code completion and error detection
I tried to find a way to have color and code completion and error detection in JSP pages I have Eclipse Java EE IDE fo…… -
Java – how to use jruby9 1.2. Use GPG to encrypt files in 0?
I am using GPG to encrypt files and send them to my j Ruby project But I didn't find enough resources I've tried ruby …… -
Java – good practice for editing objects by reference?
Suppose I have a type called superstar Now I want to have a method to do some work and edit some properties of a super…… -
Java – how to package and run a simple dependency command line application using Maven?
I'm new Java and maven, so it may be simple If I follow Maven 2 Hello world's instructions: http://maven.apache.org/gu…… -
Objectmapper serialization in Jackson
I want to serialize different types of lists by using an object mapper, but I don't know how AccountingService accServ…… -
Java – how do I get a new stateful session bean in a servlet thread?
I'm experimenting with EJB3 I want to inject a stateful session bean into a servlet so that every user accessing the s…… -
Java: how to resolve lambda parameters of wildcard types?
Then we have a functional interface: public interface Consumer<T> { void accept(T t); } I can use it: .han……