包含标签：Java 的文章
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Java – add the Google API to an existing eclipse project
I'm writing an Android application that will use Google maps, but to do this, I need Google API When I downloaded the …… -
What instantiation is called in Java?
This may be a very basic problem for Java, but I don't remember it and don't know how to search it online button.setOn…… -
Java – loads objects from a file into ArrayList
I don't know. If I don't know how many objects there are, how should I read objects from the list? Saving is easier be…… -
How is inheritance in Java different from real-world inheritance?
I got this question in an interview Through the inheritance of the real world, the interviewer means that something li…… -
Java – XML error due to servlet file. The declaration of the element cannot be found, and the referenced file contains an error
I don't know why these mistakes happen. Someone can explain how I solve them – > cvc-elt. 1: Element 'Web' not foun…… -
Set vs alphabetical order in Java list
Arent lists ordered collections and is not ordered? So why does this program sort strings alphabetically instead of li…… -
Java – objects to list – > Why do I create a new object?
I want to know why: Data type library public class Bank { String Blz; String Name; public String getBlz() { …… -
Java – extract relative paths from absolute paths
This is a seemingly simple question, but I can't do it in a clean way I have a file path as follows: /This / is / abso…… -
Java – use Spock JUnit test and gradle to build the system and output unit test results on the console
GNU Emacs 24.3.1 GNU Emacs 24.3.1 Gradle 1.12 spock-core.0.7 Hello, I am using gradle to build the system and Spock fr…… -
Why doesn’t my java code execute system out. println？
I'm using the NetBeans IDE and it doesn't detect any errors I'm just curious why this code didn't execute For referenc…… -
Java – a replacement for an existing school assignment
I have a school assignment that includes writing a scanner / lexical analyzer for a given simple language The scanner …… -
Java – Android – error connecting using login URI
I'm trying to connect Google spreadsheets in my code It worked for some time, but recently it stopped working 06-01 17…… -
Java – I can’t start the timer twice
I'm making a timer in Java. I need help The main class adds a swing timer I have a JFrame with two panels, one has jla…… -
Java – invalid or corrupt jarfile / usr / local / bin / selenium-server-standalone-2.38 0.jar
I tried to master unittesting and began to focus on this nettuts tutorial In this tutorial, it lets you download a jav…… -
Java – Dao and service layer in spring: session management
Do I correctly understand Dao & amp; Principle of service layer interconnection? The service layer uses the DAO ob…… -
24 hours in simpledateformat() and milliseconds in Java
I'm building a DAQ software, and now I'm creating a log file I want to display the time on each item A simple code (un…… -
Java – how to perform ant path mapping in the ‘War’ task?
I have several jar file schema sets, such as <patternset id="common.jars"> <include name="external/castor-1.…… -
How to determine whether there are available threads in the thread pool in Java
I try to get the task queue from the database table as quickly as possible, while limiting the number of threads proce…… -
java. Lang. illegalaccessexception: is it related to the public / private attribute of the class?
The following error occurred in my java code: java.lang.illegalaccessexception: Class org.apache.commons.digester.Obje…… -
Java – understand the terms “extension”, “component” and “plug-in” in XMPP?
Can anyone explain different "extensions", "components" and "plug-ins" in XMPP? Solution Protocol extension, component…… -
Java – why do derived class constructors always access base class constructors?
I saw this problem in a problem paper: Why do derived class constructors always access base class constructors? I wond…… -
What does javac – version show?
Even official documentation of javac Solution Javac - version tells you the JDK version That is, it provides informati…… -
Java is equivalent to Python’s string lstrip()?
I want to remove leading spaces from the string, but not trailing spaces - so trim () won't work I use lstrip () in Py…… -
Java thread, what is its answer?
The problem is from http://www.javacertifications.net/javacert/scjp1.6Mock.jsp start No problem - 20 What is the outpu…… -
Java – how does Tomcat recognize servlets specified with annotations?
Before servlet 3.0, you need to provide URL patterns and servlet classes in web Configure servlet. XML Whenever a requ…… -
Is memory allocated for unused fields in Java?
I want to know how memory allocation works in Java I have a class duck with two instance variables int size and string…… -
How to convert bytes in binary representation to ints in Java
I have a string [] with a byte value String[] s = {"110","101","100","11","10","1","0"}; Recycling s, I want to get th…… -
Java – get different JSON representations of the same object
Give a Java object serialized as a JSON string with Jackson Compression: { "a":"123","s":"100" } Or normal: { "alt…… -
java – BorderLayout. Vertical alignment of gridbaglayout panel on Center
What I want to do is to place a gridbaglayout panel in the center of my borderlayout and align the gridbaglayout panel…… -
java. Lang. IllegalStateException: you need to use theme. In this activity Appcompat theme (or descendants)
I received this error while trying to run my Android application Oddly enough: it only happens when Android applicatio…… -
STD:: sum of vector members C
I have sample classes: class Example { private: int testValue1; int testValue2; int testValue3; public: Examp…… -
Java – given a string, does “XYZ” appear in the middle of the string?
My solution works without the second line, except for one condition: if STR = "xYx" is it possible to modify the for l……