包含标签:Java 的文章
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Compiler error – ‘error: cannot find or load main class com sun. tools. javac. Main’
I just started learning Java. I installed JDK on my computer, but now I'm trying Java's simple instead of compiling I …… -
Java – complexity of two dependent loops of an external loop with log n complexity
problem Calculate the complexity of this algorithm: for(i=n; i>1;i=i/2) for(j=i;j<n;j++){ statement;…… -
Java EE – jee6: what can @ resource inject?
I try to find out what can be injected into a stateless session bean through the @ resource annotation Where can I fin…… -
Strange behavior of println () method in Java
class W { class W { static int count=0; W() { count++; System.out.print("c "); } pub…… -
Run command line operations from Java
I built a very simple program to test the command line operation of running Java That is: later, I hope to modify this…… -
Java – search WindowBuilder documentation / APIs
I'm working on a project using WindowBuilder pro. While trying to catch it, I've been looking for good documents witho…… -
Java – call other methods at any time
Is there any way to make a "super method" called every time a method is called, even if it is an undefined method? Sor…… -
Error: Java Lang. unsupported operationexception: no image data is available when using the blobstore and image APIs of App Engine
I need to use App Engine blobstore to retrieve the height and width of the uploaded image To find me, I use the follow…… -
Java – the best way to use a PostgreSQL database as a simple key value store
I was asked to use the PostgreSQL database, which will replace my current BerkeleyDB Although; I realized that this wa…… -
Java – use Lombok with gradle and spring boot
I'm trying to build a project with Lombok, which is the dependent project I have dependencies { compile("org.spring…… -
Any Oracle TNS inefficient (many round trips, latency) solution from Java applications?
I'm working on a very slow SQL query (from a Java application using hibernate deployed in JBoss 5.1) This particular q…… -
Java – insert column labels into PivotTables using Apache POI?
I created a PivotTable using Apache POI 3.11 like this: FileInputStream file = new FileInputStream(new File(path+fname…… -
Java – embedded jetty 9
I don't understand how I can rewrite the code for jetty 6: import org.mortbay.jetty.*; import org.mortbay.jetty.nio.Se…… -
Java – data input stream required
What's the difference? FileInputStream fstream = new FileInputStream ("file1.txt"); BufferedReader br = new BufferedRe…… -
Java-8 – how to skip from files Lines gets the even number of rows of the stream
In this case, there are only odd rows of meaningful data, and there are no characters that uniquely identify these row…… -
How to implement generic functions in Java?
According to my understanding, the following generic functions in Java: public static <T> T f(T x) { Integer[…… -
Why is there no index in the Java 8 stream?
I want to know about Java 8 streams (stream < E >), which have the following methods: > forEach(Consumer<…… -
Java – NetBeans and external configuration files
I am developing a java desktop application and want to have an external configuration file Solution You can add it to …… -
Java – appengine gzip compression
I'm trying to gzip response from gae server, but I received null in content encoding I have the following code: connec…… -
java – Window,Document vs. $wnd,$doc
I know that the following is some of the same in GWT: Window and $wnd Document and $doc Is there any difference except…… -
Java – how to merge in jgit?
How do I merge in J git? Suppose I want to merge master with foo branch, what should I do? Solution To merge, you can …… -
JUnit ant task – JUnit task not found
I'm trying to build from my ant Run JUnit test from the. XML file I read here, you can use JUnit Jar file instead of u…… -
Java – rock material look and feel Download
Where can I download material L & F for swing? Solution Incredibly malicious Java Net transformation has discarded…… -
Java – setter method in constructor
Get a problem I have public class Student{ private String studentNumber; private String studentName; pr…… -
How to evaluate the next statement when null is returned in Java?
How do I execute the following JavaScript code in Java? var result = getA() || getB() || getC() || 'all of them were u…… -
Java noclassdeffound error
I'm trying to run a basic hibernate program I try Google 'ing it and include the following jar files in my classpath: …… -
Text navigation in Java – JDB does not work in bash
When I run JDB in Bash, the arrow keys generate strange garbage: up: ^[[A down: ^[[B left: ^[[D right: ^[[C So I can't…… -
Java – how do I use prepackaged and swing HTML text?
How do I use CSS white space properties Solution You can try to support CSS 2.1 https://code.google.com/p/flying-sauce…… -
Java – get the previous value of the object field hibernate JPA
Let's assume I have this course: @EntityListeners({MyListener.class}) class MyClass { String name; String surname;…… -
Java – how to detect that a new value has been added to the enumeration and is not processed in the switch
From time to time, I want to add a new value to the enumeration type of the project public enum Day { SUNDAY,MONDAY,…… -
Java – enumeration with getter
Can enumerations use vendors to store references to getter methods? Use this: String value = myEnum.getValue(object) I…… -
Enhanced for loop cannot assign values to arrays (Java)
See the English answer > why Java foreach doesn't change element value? 7 int[] array = new int[5]; for(int i =……