Java
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Java execution process – Rewriting methods execute first than constructors
I have the following code in the same java file import javax.swing.SwingUtilities; import java.io.File; public class …… -
Java – spring boot swagger custom swagger UI html
I encountered a problem migrating the war application to the spring boot jar application I am using spring boot 1.4 1 …… -
Calculate the distance between two vectors of different lengths
There are different ways to calculate the distance between two vectors of the same length: Euclid, Manhattan, Hamming …… -
Java – change the child order of SWT composite
In my case, I have two sashform children, but the problem applies to all composites class MainWindow { Sashform sa…… -
Java – how to print a long type value using the input size modifier?
This is basically what I want to do // ... some code,calculations,what have you ... long timeToAdd = returnTimeToAddIn…… -
Java – where does velocity search for templates?
I need to use velocity from Java code in my web application (I use it as a mail template processor) So I have a standa…… -
Java – use bitwise and in if statements
In C, I can write an IF statement if (firstInt & 1) But when I try to perform the same operation in Java, the comp…… -
What is the meaning of the question mark in angle brackets? Extend Java lang.Comparable>
In the App Engine, according to the Javadoc, the gettyperank method has this signature: public static int getTypeRank(…… -
Java – code object o = true? New integer (0): new long (1) returns long with a value of 0 Why?
See the English answer > java conditional operator?: Result type5 Object obj = true ? new Integer(0) : new Long(1);…… -
Connect some in Java Txt file [closed]
I have some Txt file I want to connect them and generate a text file How will I execute in Java? file1.txt file2.txt C…… -
Why is timeunit Java util. Members of concurrent?
Java's timeunit enumeration is useful for many different tasks related to time, not just concurrency; And other time r…… -
Get string size in Java (no graphics object available)
I'm trying to write an application that needs to draw many strings using the graphics2d class in Java I need to get th…… -
Create Java Native methods for constructors
I'm writing a program in Java. I want to create a native interface for the library written in C But I'm confused about…… -
How to get datasource or connection from JPA2 entitymanager in Java EE 6
I have a working application that I use Java EE 6 with eclipse link persistence and a PostgreSQL database For user reg…… -
Java – JPA onetoone bidirectional
I have two entity classes with @ onetoone relationships The example code is as follows: public class A { @Id private i…… -
Java – how to redirect AWS SDK log output
Even if I'm using logback and configuring it, I keep getting stdout I can't get AWS out of the console Jun 19,2014 3:4…… -
Embedding a web browser window in Java
Does anyone know to open an instance of a platform (Windows / Linux / MAC) browser in a swing window integrated into a…… -
Close resultset in Java 7
See English answers > must JDBC resultsets and statements be closed separately although the connection is closed af…… -
Java – when to select JMS API through UDP socket API and vice versa?
It can motivate programmers to use the Java JMS (Java Message Service) API instead of Java in distributed Java applica…… -
Java – how to track row indexes after JTable has been sorted by users?
I have a JTable with the first line blank Now, when I sort the columns by clicking on the column, the blank row is at …… -
Generating patterns from entities using JPA2 hibernate eclipse 4.2 MySQL 5.5
I'm new to hibernate / JPA, and I insist it's the last step Solution If you are using hibernate, you can: >Set "hib…… -
How do I use java to capture selected screens from other applications?
We are trying to develop a screen capture utility How do we use java to capture the selected screen of another applica…… -
Natural language processing solution in Java
See English answer > is there a good natural language processing library [closed] 3 Solution The two popular I know…… -
Audio / video capture in phonegap / Cordova using external Java plug-ins
I am developing an Android application using phonegap / Cordova and JavaScript I want to use an external Java plug-in …… -
Java – how to improve my JUnit test
My JUnit test looks like a long story: >I create 4 users > I delete 1 user > I try to log in with the deleted…… -
Why does this exceed the 65535 byte limit in Java constructors and static initializers?
Disclaimer: I realize that I can generate this at Java runtime. When testing some code, I need a very special case I f…… -
How to parse large (50 GB) XML files in Java
At present, I try to use a Sax parser, but about 3 / 4 through the file, it is completely frozen, I have tried to allo…… -
Java – why doesn’t Maven generate project reports?
This is Maven 3.0 I am creating a new project: mvn archetype:create Then I create a file site / site xml： <project…… -
Java – converts a byte array containing ASCII characters to a string
I have a byte array consisting of ASCII characters that I want to convert to a string For example: byte[] myByteArray …… -
Java – BlackBerry browser return Click
After loading the browser, I want to go back to the previous page, but it takes three clicks I tried to override the b…… -
Java – use GlassFish / Metro to simulate the problem of WCF secure web server
I'm trying to build a GlassFish hosted web service (for development and testing) and a WCF hosted web service I have t…… -
Java string pool and type conversion
My problem is the way Java handles strings It is clear from the Java language specification (JLS) that string literals……